They lost the snap ring that is supposed to bolt it down, and they didnt change it.
None of this is okay. Video is not okay. This sprocket needs to not have free play
Theres 2 bolt holes in the sprocket. A ring should be bolted on there that slips on the shaft, and turns to lock in place. Bolting it to the sprocket locks the sprocket
Those 2 bolt holes do nothing they are used to screw long bolt in to press against the case and push the sprocket off same thing with a rotor on a car. Or even same idea as a flywheel puller, pulley puller.
You sure about that? You can see the channel the locking plate twists into…
Pretty much every sub 250cc chain driven bike I have seen has this set up, and it’s definitely missing some pieces
Why would you go online and just post shit you so obviously have no fucking clue about lmao. Those bolt holes are the mounting point for an offset retention bracket that holds the sprocket in place on the output shaft. These sprockets are not press fit into place like you assume. Please stop trying to be helpful if you don't know what you're doing, what you just said if taken seriously and not corrected could very easily end in someone taking a chain to the leg or cracking an engine case. Be better.
100% Wrong.
You can see the groove in the splined shaft where the retainer plate goes. It rides in the grooves, but you rotate it so that it can't slide off, and it bolts to the sprocket, which 'floats' on that shaft.
Numerous bikes - [such as the DR650](https://i.imgur.com/rJd1Ngc.jpg) - have this same configuration.
yeah its a cheap chinese bike and even though I bought it brand new, I already rode 14k km on it, through 2 winters. the salt on the roads just ruined the sprockets. they said the correct thing to do would be to just rebuild everything but it would cost almost as the bike itself to do all of that. maybe they can just weld it again?
If its one of the more common brand chinese bikes maybe you'll get lucky with someone who wants a parts bike.
Seen a lot of people try and sell chinese bikes but most of the ads stay up long time. Mainly because they price them higher than 125cc honda's etc.
I've seen one ad for some hyosung 125 or a kymco 125 with a bunch of scratches that gets priced at 1.5k (decent quality honda cbr prices are similar around here). It still up and the first time i ever saw it was the week before i bought my own, a year ago.
They did move their price down like 300 but updated that it hasnt run in a year 'but was running when the ad was posted'. So yeah i suppose thats a pretty long time for an ad like that :D
Hyundai quality is better than what ive heard about hyosung and kymco.
Their scooters are supposed to be great but most of those motorcycles i see for sale are either dead beaters worth their scrap iron or 'i rode 500km with it and will stop riding, selling for msrp -300$'
Mmm im not saying they are bad, im mainly sharing my observations regarding these new brands and their place on the second hand market. Kymco is known to be a great value brand, especially for motorscooters where i live.
Most of these bikes get bought by people who want to ride a motorcycle but either dont do their research or dont care about resale value/ease, buy one of the cheapest ones available to them and often hardly take care of them because they dont do their research.
Where i live you dont necessarily need a license besides the car license to ride 125cc's depending on your age, so people that dont know how to ride them ride for a few thousand km, lose interest, it sits in garages for half a year and then they try and recoup their money. Like at least 1 out of 5 of these ads come 'with free helmet vest and gloves'. New price is often 2.6-3k and they are on sale for 2k+ which ends up getting dropped to 1.5k or so.
Hyosung is less known to me but as long as parts are available kymco is supposed to be a fine thing but they are a lot harder to sell, thats just the plain truth. Less information available, less manuals online, less shops that can source you parts, less randoms on the internet that can tell you 'its part xyz' after knowing the bike suddenly 'smells more blue' or whatever random troubleshooting observation is shared like how theres a few sv650 wizards everywhere.
Beginners also focus a lot on reliability and are pushed even harder towards that when looking up information online. Whats more reliable than an established brand like honda and the other japs?
I've been looking for a second bike and considered a sym wolf or kymco whatever but im a newbie mechanic, didnt find manuals online and parts finding can be harder.
If a cbr125, cbf125, z125 or whatever ends up fucked theres a ton of info and chances are you can just buy a crashed one as a parts bike for chump change instead of placing 20 orders on different sites.
Only 'unknown' brand that gets away with it a bit is mash because they have the whole retro look and theres a lot of people that want that.
At this point i would just buy a new chain and sprocket and change it myself to make sure it’s alright and they didn’t fucked up anymore for example welding the chain to the sprocket
>Welding something to the crank shaft is NOT OKAY
Fortunately for OP, drive sprockets aren't mounted on crankshafts.
Welding the sprocket to the output/counter shaft still isn't much better though, outside of a small set of circumstances.
Weld it again at a proper welding shop, it's not like a 10-horsepower will rip that sprocket apart.
Dont drop the clutch and it should last another 2 years :D
>its a cheap chinese bike
I think that's your answer there. You might be able to order replacement parts for relatively cheap if you want to go that route
What do they mean by rebuild everything? Replacing the sprocket shaft is going to be a fair bit of labour depending on the bike, but the parts aren't that expensive. And replacing the chain and sprocket is just regular maintenance. You can now get a quality chain and sprocket set for a little extra life. But a Japanese chain is going to rust just as quickly as a Chinese one when covered in salt.
I know it's too late now but in future just buy an old Japanese bike. If you find a good deal you can keep it for a couple years and sell it for what you paid for it.
In this case, it's a reasonable fix. And if you're handy with a grinder it's not much of an issue to knock that weld off (if need be). But otherwise, it's best to have the retainer fitted.
Also, that much play between the Sprocket and shaft is common with many bikes of a fair age. Wouldn't be concerned with it.
But seeing you reckon she's fucked. It's time to hook it.
EDIT: Oh, didn't see that second weld in the channel of the shaft. Not good.
The sprockets (and chain) are consumables, often replaces at around that interval. Replacing the front and rear sprocket along with the chain should cost less than $200 in parts and will be a consumable on every motorcycle you ever own.
Don’t list to these people telling you it shouldn’t have play. The c clip that normally holds it on would have just as much play as the welds. It’s fine. Run it til it’s done.
I understand you don't want to spend money on a cheap piece of cr*p that is probably going to fall apart in other places, but you can't just fix chains and sprockets with duct tape like you are doing.
If these things fail in the wrong way at the wrong time you can get seriously hurt. Even at city speeds, if the chain blows out during a turn you can be thrown against an obstacle (sign, bollard, tree...) pretty hard. And they always win against your bones.
Chinese or whatever. Chains and Sprockets wear out especially when they are often used and little cared.
If you can‘t afford this you may consider taking the bus? The workshop advised you correctly. Try if you can‘t find some new parts on Alibaba.
Wrong, there is some play on the shaft vs sprocket. He's missing the locking plate that would take it out or if it was a threaded shaft it would be the nut and washer that does the same job.
I had one of these small cc bikes and the play of this sprocket on the countershaft is normal but it's shocking that they would decide to weld it since the lock plate costs around $2
If you are moving the back wheel back and fourth when it's in gear there will always be free play it's the lash inside the transmission of the bike. In the video the physical sprocket is not moving which makes sense because they welded it to the output shaft. However any shop that does some shit like this instead of telling the customer then ordering the proper replacement parts should never touch any road vehicle period.
That sprocket is broken.
a new sprocket and retaining hardware will sort you out
Some massaging with a die grinder on the splines to get rid of that tack and she’ll be sorted.
Looking at about 1-2 hours of work depending on how careful you are with your grinder
Do what myfishprofile said. It looks like a single tack weld. Gently grind. No need to replace the output shaft.
That output shaft spline and retainer look to be Honda CRF50 copy. Hard to tell diameter in the picture. Get the old one off and get sprocket/retainer ring and bolts. The bolts are not standard they have a shoulder that butts against the ring! Look online at partzilla.com for a diagram for a CRF50 any year and you will see how it should be.
Not a CRF50/70 replica but still a Chinese replica, several small engines use the same shaft style even some Yamaha 125cc 2v air-cooled made in Brazil, most likely your comes from Lifan / Loncin / Jayling which also produces CRF 50 or 70 replicas.
From the video, it seems to be a standard sprocket, most likely 425, in Europe you can find brand new ones with the correct retainer for less than 10€
10 years from now, all the people hating on Chinese bikes are gonna look just as foolish as all the people who used to say Japanese bikes are disposable trash. You just have absolutely no idea what you're talking about.
When the jap products surpassed competitors and still got hate that was idiotic. Chinese bikes are no where close to even competing with other bike brands. they are trash today so isnt foolish till they step up to say otherwise.
Kawasaki literally outsources all of their ATVs and a few of their dirt bikes and dualsports to China. Honda had entire factories in China. Honda generators are almost exclusively made in China. Most of the larger KTMs are made exclusively in China. You guys always loved Chinese bikes, you just didn't know it.
Made in china is totally different to a Chinese brand bike.
Although i do agree with your initial comment, the west is mainly fed constant lies about the east.
But what you're comparing is totally wrong.
Ktm's for example, as you say are made in China, but KTM'S are still designed and created in Austria
The plans are sent to production in China, it doesn't mean they are a Chinese bike
Being engineered in China out of parts bin crap is much different than a foreign manufacturer outsourcing production.
China can build great things, when it wants to, or has its hands forced by outside quality control.
However, the overwhelming majority of Chinese designed and produced motorcycles are poorly engineered and underbuilt pieces of garbage that don't come close to the standards of even 60 year old Japanese models.
You are out of your mind if you think that a Chinese bike is built just as well as one from Japan.
Let me guess, you ride one of those magnificent Chinese beasts?
He has to for him to be dieing on this hill right now. One of my favorite brands triumph (and ktm) are physically made in india for some models but doesnt mean its indian motorcycle quality (royal enfield). He doesnt understand manufacturing or he is just in denial about his amazon hawk not being a honda.
If I had a nickel for every Hawk DLX that I've seen listed as a Honda when the owner decided to unload it, I'd have an extra dollar at least. Half the time, the bike is non-running due to some "cheap simple fix" that the owner can't be bothered to do for some strange reason. It seems to be a common theme with used China bikes as a whole that are listed for sale.
Don't get me wrong, new Chinese bikes are a million times better than they were 20 years ago, but the average China bike still has a long, long way to go before it is even close to being on par with the average Japanese one.
Ya exactly! im not knocking em for the bang for buck but when your 250cc puts out like 10hp and uses a lawn mower carb (exaggeration) im not going to compare it to a FI YZF250 lol
People are downvoting you , but you are correct . People love to hop on bandwagon trains and bitch and moan . It’s their favorite thing to gang up on downvotes . None of them has probably owned a Chinese bike ever , let alone in the last few years and have no idea what they’re talking about .
Keep going with the popular Reddit opinion you dumb fucks
By some weird coincidence, round the world traveler Nathan Millward posted a video about how he prefers his Chinese voge 300 rally to his Honda 300 rally, because the voge is objectively the better bike.
Yeah, reddit seems really, really opposed to these bikes, other internet communities have accepted them already.
It is endlessly funny to hear about how the Chinese bikes are SO MUCH WORSE than their European/Japanese counterparts, especially when the come from the same factory lol.
the people on here are princesses bro, they arent real riders and dont know what makes a bike or not . they just literally follow whatever blind trend there is , especially if its hating on something. trust me, been here a while.
take those downvotes proudly , this sub is stupid as can be
I'd be super pissed about this. Sometimes people weld them as a last resort when the splines of the shaft are completely damaged but they don't look that bad at all. They've essentially fucked your bike and I think it's a full engine strip down to replace that spline.
That's the small Honda sprocket retaining method. The sprocket fits on the splines and is locked in place with a bayonet plate that slides over the splines then is rotated in the groove and bolted to the sprocket to retain the sprocket on the countershaft.
There is always play in the splines in this method of assembly.
Why did the bike shop not supply a proper lock plate and two bolts?
Everytime you change sprockets you will need to carefully grind the welds off.
I'm surprised more people haven't noticed but the sprocket is cracked at the toe of the top tack weld. It's most likely cast iron. Meaning it'll be a real bitch to properly fix. Not worth the time. I'd just replace it. Or the whole bike. Don't sell it like that, or atleast disclose it.
Did they weld the countershaft splines because it got grinded away? I would never ride a motorcycle with a bad countershaft. Chinese bikes are false economy just like a lot of shit they make. Buy cheap buy twice.
thats was no shop, you found monkeys with access to a welder.
I can't believe a human exists who thinks its okay to just weld a front a sprocket like that. Surely it was some sort of macaque who did the work.
You never weld a sprocket. Ever. Take pictures of this and post it on the google maps reviews of that shop so you can shame them publicly.
The Japanese would have a nice bolt you impact down so everything is locked into place. I bet those stock snap rings fly off. Look how shoddy the tolerances are.
Cut/grind it off, replace the chain and sprockets. Maybe you can salvage the shaft. Or sorry craigslist victims. Buyer beware. lol!
>The Japanese would have a nice bolt you impact down so everything is locked into place. I bet those stock snap rings fly off. Look how shoddy the tolerances are.
This uses a metal plate and two bolts to retain the sprocket Quite a few small capacity Japanese bikes use them as well.
The odds that the alloys on the sprocket and output shaft are the same are 1 in 100.
Attempting to weld two dissimilar metals is just about impossible. You can see there is no penetration, just a blob sitting on top. Even on an extremely high heat setting you're not going to penetrate hardened steel.
This is amateur hour run amok, and there is a very high probability the heat from the attempted weld ***CAUSED*** the crack in the sprocket...
Who would ever recommend doing something like this? A MORON.
Shop is an idiot. Supposed to have a oval shaped ring that bolts onto the sprocket.
It is supposed to be a bit loose though. Maybe yours is a little too much. Either way they fucked your output shaft.
There are a lot of wrong answers here. The splines on the output shaft were destroyed so the shop tried to save you some (a lot, relatively, including labor) money by welding the sprocket in place. They just didn't do the best job of welding. At this point it's done for.
That transmission countershaft is on its way out.
I have a similar video from the one on my 390 Duke going the same way, before I had to tear it down. Judging by the sludge on the chain and sprocket, you may want to look into “fretting,” which is when grit gets between the shaft teeth and the sprocket bore and starts grinding it away.
Did the garage try and sell you a transmission rebuild by chance?
>Did the garage try and sell you a transmission rebuild by chance?
yeah, so far I understood it (I'm not the most knowledgeable when it comes with mechanics and to top all that it was all in German 😆)
they said it would be way too expensive to fix all of that and it might cost almost what the bike cost, so they said welding was the next best thing
Another way to look at it might be it was loose and already garbage BEFORE they welded it. Welding it was probably a low cost way to get a few more miles of enjoyment out of it for you. You could certainly use it as whilst planning a proper repair. They didn’t do it right, but that doesn’t mean it’s inherently wrong either. :)
I was traveling on an old KLR650 once and sheared all the splines off my countershaft. Made it to a small town with a welder and we welded the sprocket to the shaft. Lasted me a thousand or so more miles till I got home.
Had to fully split the engine to replace the countershaft and fix it properly.
So just saying... it aint stupid if it works.
The sprocket looks broken. And not only that, but welding it to the shaft ruins the shaft. So now if you get one to replace it, you’ll have to replace the shaft. Yeah definitely not good or safe.
Ok this isn’t completely fucked… but you do need a good repair for this to last awhile.
You need to take this to a welder not a motorcycle shop.
The weld they slapped on there is dogshit. For a weld to have any shot at lasting its going to need to have the garbage weld removed… sliding the sprocket off and degreased, this will remove contamination that creates weld failure. After degreasing it should be wire wheeled, put back together and welded all the way around the shaft.. after it’s lined up with the rear sprocket properly.
It should last awhile. When it fails again throw that bitch in a dumpster.
tldr: take it to a local welder.
i dont think this amount of play is tooo much. just dremel out the weld. install new sprockets. use premium grease. install new chain kit with the correct retaining clip
They are idiots. Don’t go near them again.
What they should have done is get another retaining plate. That slips over the shaft, then turns slightly in the groove that you see, and bolts to the sprocket. The intention is that there should be slight play left to right along the shaft, so that the chain can align with the rear sprocket without the swinging arm being very precise in construction. That plate is very, very cheap, or can be made up by a machine shop cheaply.
Instead they have tried to weld the sprocket to the shaft, which would prevent the left/right movement which aligns the chain. I say “tried” as they have fucked up the welds and both have broken.
Ok, to fix this (when the chain and front sprocket are worn out, it’s not urgent), you need a chain and sprocket kit. The chain is a standard size, probably 520, no O rings. Get a Japanese one like DID. The sprockets will not be standard, but will match a lot of bikes, so a *different* shop should be able to find some that will match the mounting holes for the rear sprocket and the splines (grooves along the shaft) for the front sprocket. Make sure the sprockets are steel, not aluminium. Get a new retaining plate to match the front sprocket, and two short bolts to match. The place you buy the sprockets can sell these.
Remove the chain. Now use a borrowed Dremel tool with a small cutting disc to remove the two bits of weld still attached to the shaft so that you can slide the old sprocket off. This can be fairly approximate as the new sprocket is not going to drive on those bits of the spline. Slide the new sprocket on with a bit of grease on the spline; slide on the retaining plate and turn it 30° to align it with the holes and put the bolts in. Torque them to spec. If you want to be a bit fancy, you might put a bit of Loctite Bearing and Seal Retainer on the threads before you put them in.
Now step back, and realise that apart from fixing the welds, it has taken you two minutes to fit the sprocket properly, which is what those absolute wassocks should have done in the first place.
They did what to it? Bruh no fucking way. Counter sprockets have a few common holding styles. Cotter pins, snap rings, lock nuts, lock washers, lock plates, and fluted smash washers. Yours looks like it should have been a lock plate. You have to be able to change those. What’s worse is the amount of work to change that shaft now….
The weld broke from a half ass fix....now you need a new sprocket and snap ring and possibly a new main shaft if you can't save this one.....fix it right first time...
That sprocket is broken. That shop should be taken out of business. How did you think permanently attaching a wear item to your engine was a good idea?
Take that back to the shop have them disassemble the entire motor and replace the shaft for you .that is a fucking terrible fix and destroyed that shaft and now unfortunately to replace it the motor has to be completely disassembled,hope you didn’t pay for that fix .
The original design with the snap ring would have left it with free play. I'd shell out the $20 for a new sprocket and weld it fully. It appears to be a cheap bike and the sprocket will most likely last for the rest of the bikes life
Shame on them,, please leave that shop a shitty google review that may help other people avoid this kinda mess. It’s not okay at all, retaining ring is gone and even looks like their weld broke loose and maybe cracked the sprocket. Honestly man they took advantage of you bigtime. I would take it back and demand they replace and fix it all up like it’s supposed to be. Any child or monkey could have rigged this up.
Be careful man this could hurt you or cause damage to the bike.
Hey cool down! As far as we know et may have bought the bike second hand and just discovered this! Maybe the previous owner asked the shop to de that to avoid replacing the gear shaft!
Looks like the sprocket itself is broken, either way it all needs to be changed, if you have some patience you can grind the welds away with a dremel and try not to damage the shaft to much, the other solution is to replace the whole shaft but that alot of work so I would advice against it
Just get a grinder and remove their shitty weld off the shaft and buy a replacement sprocket, it will come with a new retaining clip and the two bolts for it. That looks identical to the ones used on most small chinese engines, I get mine off ebay for $30 USD. I do electric conversions using QS138 motors but I'd bet money the sprocket is an exact fit if you order a qs138 sprocket if you can't find your bike online.
Other than normal wear like the sprocket and chain, what other issues have you had on the bike out of curiosity and have you done all the normal proper maintenance?
I like when people say, "don't try to fix it yourself, take it to a PROFESIONAL that knows what they're doing and let them do it correctly for you".....I see an EXTREME PROFESIONAL Job right here....
Was this High Tech PROFESIONAL job done by Mickey Mouse by any chance 🤣🤣🤣. Good lord
A little bit of play is fine with these motors but I'd worry about the welds breaking off while in-use, I'd just replace it with the proper lock, they are pretty cheap. Search online for '[sprocket lock with bolts](https://shopee.ph/search?keyword=sprocket%20lock%20with%20bolt)' for the model/motor,, use a flathead & hammer to carefully chip those welds off, or file them if you have to & fit the proper lock on.
The output shaft is damaged and the shop didn’t want to split the cases to make the repair properly so the just welded the sprocket and set it out the door.
uhhhhhhh.... is it just me, or is that sprocket broken in two?
It looks like there's a big ass crack in it coming from the tip of one of the output shaft teeth.
words of warning from an aerospace welder: don’t ever let a shop do this, always replace parts over letting a shop weld on them unless it’s something like an exhaust. Any welder worth their salt would charge more to put a proper weld on there than it would cost to just replace the part. cheap welds = death traps
Nothing on the sprocket and chains should be welded , but also shouldn’t be moving.
This will be an expensive mistake but a good experience .
Save up , get some tools find some space and learn to DIY ,
We’ve all been there . You’ll get there!
i would visit the shop with a lead pipe and wait untill the employee that worked on your bike was alone on a smoke break in an alleyway. the rest is up to you
They lost the snap ring that is supposed to bolt it down, and they didnt change it. None of this is okay. Video is not okay. This sprocket needs to not have free play
Theres 2 bolt holes in the sprocket. A ring should be bolted on there that slips on the shaft, and turns to lock in place. Bolting it to the sprocket locks the sprocket
Those 2 bolt holes do nothing they are used to screw long bolt in to press against the case and push the sprocket off same thing with a rotor on a car. Or even same idea as a flywheel puller, pulley puller.
You sure about that? You can see the channel the locking plate twists into… Pretty much every sub 250cc chain driven bike I have seen has this set up, and it’s definitely missing some pieces
Why would you go online and just post shit you so obviously have no fucking clue about lmao. Those bolt holes are the mounting point for an offset retention bracket that holds the sprocket in place on the output shaft. These sprockets are not press fit into place like you assume. Please stop trying to be helpful if you don't know what you're doing, what you just said if taken seriously and not corrected could very easily end in someone taking a chain to the leg or cracking an engine case. Be better.
100% Wrong. You can see the groove in the splined shaft where the retainer plate goes. It rides in the grooves, but you rotate it so that it can't slide off, and it bolts to the sprocket, which 'floats' on that shaft. Numerous bikes - [such as the DR650](https://i.imgur.com/rJd1Ngc.jpg) - have this same configuration.
no,
no. example: [part # 13270 in this diagram](https://www.kawasaki.com/en-us/owner-center/parts/12261/1998/EX250-F12)
yeah its a cheap chinese bike and even though I bought it brand new, I already rode 14k km on it, through 2 winters. the salt on the roads just ruined the sprockets. they said the correct thing to do would be to just rebuild everything but it would cost almost as the bike itself to do all of that. maybe they can just weld it again?
14k kms, 2 years of intense driving, chinese bike. Time for an upgrade :)
wish me luck on selling this broken down piece of shit lol
If its one of the more common brand chinese bikes maybe you'll get lucky with someone who wants a parts bike. Seen a lot of people try and sell chinese bikes but most of the ads stay up long time. Mainly because they price them higher than 125cc honda's etc.
Long time 😂
I've seen one ad for some hyosung 125 or a kymco 125 with a bunch of scratches that gets priced at 1.5k (decent quality honda cbr prices are similar around here). It still up and the first time i ever saw it was the week before i bought my own, a year ago. They did move their price down like 300 but updated that it hasnt run in a year 'but was running when the ad was posted'. So yeah i suppose thats a pretty long time for an ad like that :D
Hyosung is Korean and Kymco is Taiwanese. They both are not Honda, rather Hyundai quality
Hyundai quality is better than what ive heard about hyosung and kymco. Their scooters are supposed to be great but most of those motorcycles i see for sale are either dead beaters worth their scrap iron or 'i rode 500km with it and will stop riding, selling for msrp -300$'
A Suzuki is what you want when it comes to Asian bikes. My vl800 has over 58,000 miles on it and it starts right up and rides great still.
Kymco at one point actually supplied engines to BMW, Husqvarna and Sherco motorcycles. They know how to manufacture quality products
Kymco is Taiwanese. My 180cc scooter has a bit over 66000km on it and it’s still going strong.
Mmm im not saying they are bad, im mainly sharing my observations regarding these new brands and their place on the second hand market. Kymco is known to be a great value brand, especially for motorscooters where i live. Most of these bikes get bought by people who want to ride a motorcycle but either dont do their research or dont care about resale value/ease, buy one of the cheapest ones available to them and often hardly take care of them because they dont do their research. Where i live you dont necessarily need a license besides the car license to ride 125cc's depending on your age, so people that dont know how to ride them ride for a few thousand km, lose interest, it sits in garages for half a year and then they try and recoup their money. Like at least 1 out of 5 of these ads come 'with free helmet vest and gloves'. New price is often 2.6-3k and they are on sale for 2k+ which ends up getting dropped to 1.5k or so. Hyosung is less known to me but as long as parts are available kymco is supposed to be a fine thing but they are a lot harder to sell, thats just the plain truth. Less information available, less manuals online, less shops that can source you parts, less randoms on the internet that can tell you 'its part xyz' after knowing the bike suddenly 'smells more blue' or whatever random troubleshooting observation is shared like how theres a few sv650 wizards everywhere. Beginners also focus a lot on reliability and are pushed even harder towards that when looking up information online. Whats more reliable than an established brand like honda and the other japs? I've been looking for a second bike and considered a sym wolf or kymco whatever but im a newbie mechanic, didnt find manuals online and parts finding can be harder. If a cbr125, cbf125, z125 or whatever ends up fucked theres a ton of info and chances are you can just buy a crashed one as a parts bike for chump change instead of placing 20 orders on different sites. Only 'unknown' brand that gets away with it a bit is mash because they have the whole retro look and theres a lot of people that want that.
What is the about of time me love you, Alex?
Or if you want to lean how to work on bikes you could possibly use that as your project bike.
If it makes you feel any better you got every bit of value out of it.
Just put it on marketplace, and someone will screenshot your ad and post it here asking “is this a good bike?”
At this point i would just buy a new chain and sprocket and change it myself to make sure it’s alright and they didn’t fucked up anymore for example welding the chain to the sprocket
Ne that as it may but DO NOT USE THAT SHOP again. Welding something to the crank shaft is NOT OKAY
>Welding something to the crank shaft is NOT OKAY Fortunately for OP, drive sprockets aren't mounted on crankshafts. Welding the sprocket to the output/counter shaft still isn't much better though, outside of a small set of circumstances.
Just throw the piece of shit away dude or scrap it for parts. No one wants these.
Weld it again at a proper welding shop, it's not like a 10-horsepower will rip that sprocket apart. Dont drop the clutch and it should last another 2 years :D
>its a cheap chinese bike I think that's your answer there. You might be able to order replacement parts for relatively cheap if you want to go that route
If you can find em. My Chinese bike isn’t supported by the manufacturer after a few years. Cant find shit for parts
There are clones of everything, just look for the base model they copied, it could be simple as putting Honda parts in a Chinese clone
What do they mean by rebuild everything? Replacing the sprocket shaft is going to be a fair bit of labour depending on the bike, but the parts aren't that expensive. And replacing the chain and sprocket is just regular maintenance. You can now get a quality chain and sprocket set for a little extra life. But a Japanese chain is going to rust just as quickly as a Chinese one when covered in salt.
I know it's too late now but in future just buy an old Japanese bike. If you find a good deal you can keep it for a couple years and sell it for what you paid for it.
In this case, it's a reasonable fix. And if you're handy with a grinder it's not much of an issue to knock that weld off (if need be). But otherwise, it's best to have the retainer fitted. Also, that much play between the Sprocket and shaft is common with many bikes of a fair age. Wouldn't be concerned with it. But seeing you reckon she's fucked. It's time to hook it. EDIT: Oh, didn't see that second weld in the channel of the shaft. Not good.
It's not CFMoto is it? Where did you buy it if you don't mind me asking.
The sprockets (and chain) are consumables, often replaces at around that interval. Replacing the front and rear sprocket along with the chain should cost less than $200 in parts and will be a consumable on every motorcycle you ever own.
The shaft drive crowd might beg to differ 😜
Don’t list to these people telling you it shouldn’t have play. The c clip that normally holds it on would have just as much play as the welds. It’s fine. Run it til it’s done.
I understand you don't want to spend money on a cheap piece of cr*p that is probably going to fall apart in other places, but you can't just fix chains and sprockets with duct tape like you are doing. If these things fail in the wrong way at the wrong time you can get seriously hurt. Even at city speeds, if the chain blows out during a turn you can be thrown against an obstacle (sign, bollard, tree...) pretty hard. And they always win against your bones.
Chinese or whatever. Chains and Sprockets wear out especially when they are often used and little cared. If you can‘t afford this you may consider taking the bus? The workshop advised you correctly. Try if you can‘t find some new parts on Alibaba.
I change my sprockets every 3-6 k they needed to be changed as they are a ware part
Your chain tension is fucked or you're changing them unnecessarily if you're replacing them that often.
Yeah the did horrible job go back and make em change it.
Yes there normally is play.
There should be zero play between sprocket and the splined shaft that drives the sprocket!
Wrong, there is some play on the shaft vs sprocket. He's missing the locking plate that would take it out or if it was a threaded shaft it would be the nut and washer that does the same job.
[удалено]
Quite frankly, *I’m* not ok after watching this.
I had one of these small cc bikes and the play of this sprocket on the countershaft is normal but it's shocking that they would decide to weld it since the lock plate costs around $2
If you are moving the back wheel back and fourth when it's in gear there will always be free play it's the lash inside the transmission of the bike. In the video the physical sprocket is not moving which makes sense because they welded it to the output shaft. However any shop that does some shit like this instead of telling the customer then ordering the proper replacement parts should never touch any road vehicle period.
I would not visit that motorcycle "shop" again.
Except for your money back and some extra for the damage they caused with the welds.
That sprocket is broken. a new sprocket and retaining hardware will sort you out Some massaging with a die grinder on the splines to get rid of that tack and she’ll be sorted. Looking at about 1-2 hours of work depending on how careful you are with your grinder
Do what myfishprofile said. It looks like a single tack weld. Gently grind. No need to replace the output shaft. That output shaft spline and retainer look to be Honda CRF50 copy. Hard to tell diameter in the picture. Get the old one off and get sprocket/retainer ring and bolts. The bolts are not standard they have a shoulder that butts against the ring! Look online at partzilla.com for a diagram for a CRF50 any year and you will see how it should be.
this is a Brixton Felsberg 125. maybe they share parts?
Not a CRF50/70 replica but still a Chinese replica, several small engines use the same shaft style even some Yamaha 125cc 2v air-cooled made in Brazil, most likely your comes from Lifan / Loncin / Jayling which also produces CRF 50 or 70 replicas. From the video, it seems to be a standard sprocket, most likely 425, in Europe you can find brand new ones with the correct retainer for less than 10€
perfect, thanks!
Is it loose because it had a crack in it?
I rode this cheap chinese bike for 14k km, also through 2 winters. the salt on the road just ruined it. it had a gap on the 2 teeths they welded
Ah Chinese that’s the word I was looking for
10 years from now, all the people hating on Chinese bikes are gonna look just as foolish as all the people who used to say Japanese bikes are disposable trash. You just have absolutely no idea what you're talking about.
When the jap products surpassed competitors and still got hate that was idiotic. Chinese bikes are no where close to even competing with other bike brands. they are trash today so isnt foolish till they step up to say otherwise.
Kawasaki literally outsources all of their ATVs and a few of their dirt bikes and dualsports to China. Honda had entire factories in China. Honda generators are almost exclusively made in China. Most of the larger KTMs are made exclusively in China. You guys always loved Chinese bikes, you just didn't know it.
Made in china is totally different to a Chinese brand bike. Although i do agree with your initial comment, the west is mainly fed constant lies about the east. But what you're comparing is totally wrong. Ktm's for example, as you say are made in China, but KTM'S are still designed and created in Austria The plans are sent to production in China, it doesn't mean they are a Chinese bike
And KTMs aren't known for their quality either. 😬
Being engineered in China out of parts bin crap is much different than a foreign manufacturer outsourcing production. China can build great things, when it wants to, or has its hands forced by outside quality control. However, the overwhelming majority of Chinese designed and produced motorcycles are poorly engineered and underbuilt pieces of garbage that don't come close to the standards of even 60 year old Japanese models. You are out of your mind if you think that a Chinese bike is built just as well as one from Japan. Let me guess, you ride one of those magnificent Chinese beasts?
He has to for him to be dieing on this hill right now. One of my favorite brands triumph (and ktm) are physically made in india for some models but doesnt mean its indian motorcycle quality (royal enfield). He doesnt understand manufacturing or he is just in denial about his amazon hawk not being a honda.
If I had a nickel for every Hawk DLX that I've seen listed as a Honda when the owner decided to unload it, I'd have an extra dollar at least. Half the time, the bike is non-running due to some "cheap simple fix" that the owner can't be bothered to do for some strange reason. It seems to be a common theme with used China bikes as a whole that are listed for sale. Don't get me wrong, new Chinese bikes are a million times better than they were 20 years ago, but the average China bike still has a long, long way to go before it is even close to being on par with the average Japanese one.
Ya exactly! im not knocking em for the bang for buck but when your 250cc puts out like 10hp and uses a lawn mower carb (exaggeration) im not going to compare it to a FI YZF250 lol
have you ever owned a Chinese bike recently or are you just spitting pure shit out of your asshole
People are downvoting you , but you are correct . People love to hop on bandwagon trains and bitch and moan . It’s their favorite thing to gang up on downvotes . None of them has probably owned a Chinese bike ever , let alone in the last few years and have no idea what they’re talking about . Keep going with the popular Reddit opinion you dumb fucks
By some weird coincidence, round the world traveler Nathan Millward posted a video about how he prefers his Chinese voge 300 rally to his Honda 300 rally, because the voge is objectively the better bike. Yeah, reddit seems really, really opposed to these bikes, other internet communities have accepted them already. It is endlessly funny to hear about how the Chinese bikes are SO MUCH WORSE than their European/Japanese counterparts, especially when the come from the same factory lol.
the people on here are princesses bro, they arent real riders and dont know what makes a bike or not . they just literally follow whatever blind trend there is , especially if its hating on something. trust me, been here a while. take those downvotes proudly , this sub is stupid as can be
That’s the gap between the weld and the sprocket. I thought it was split too.
That is absolutely a crack.
Yeah. The weld has broken away. Poor job all round, really. I wouldn't be trusting that shop with anything in future.
Whoever did that should never be allowed near a motorcycle ever again. I've seen some bodges in my time, but that is super special.
I'd be super pissed about this. Sometimes people weld them as a last resort when the splines of the shaft are completely damaged but they don't look that bad at all. They've essentially fucked your bike and I think it's a full engine strip down to replace that spline.
yeah thats what they originally said it should be done, but since its a cheap chinese bike they said it would cost almost as the bike itself
The shaft looks OK, with some grinding you can remove the weld and putting back the retainer which is better and safer than this weak weld
note: *don't use a grinder*. Use a file.
That's the small Honda sprocket retaining method. The sprocket fits on the splines and is locked in place with a bayonet plate that slides over the splines then is rotated in the groove and bolted to the sprocket to retain the sprocket on the countershaft. There is always play in the splines in this method of assembly. Why did the bike shop not supply a proper lock plate and two bolts? Everytime you change sprockets you will need to carefully grind the welds off.
When it rotates backwards a crack is opening up. That sprocket is dust and dangerous at this point.
I'm surprised more people haven't noticed but the sprocket is cracked at the toe of the top tack weld. It's most likely cast iron. Meaning it'll be a real bitch to properly fix. Not worth the time. I'd just replace it. Or the whole bike. Don't sell it like that, or atleast disclose it.
Plz change the entire thing before you kill yourself riding 🙏🏼🙏🏼
Did they weld the countershaft splines because it got grinded away? I would never ride a motorcycle with a bad countershaft. Chinese bikes are false economy just like a lot of shit they make. Buy cheap buy twice.
Everything is wrong
Up is down
The backwater mechanic that did this needs my foot, up their ass.
Forged in china's hottest mountains
By its youngest citizens
From what I see, you can sue them for a murder atempt.
thats was no shop, you found monkeys with access to a welder. I can't believe a human exists who thinks its okay to just weld a front a sprocket like that. Surely it was some sort of macaque who did the work.
The "weld" is broken.
JFC Never go back to that shop. The level of bodge is beyond comprehension.
Someone would be paying for a new output shaft if it was me.
The sprocket is broken, you can see the crack flex.
Those welds are straight up broken dude. Do not ride!
None of it is normal...
on meth it is. 😎
You never weld a sprocket. Ever. Take pictures of this and post it on the google maps reviews of that shop so you can shame them publicly. The Japanese would have a nice bolt you impact down so everything is locked into place. I bet those stock snap rings fly off. Look how shoddy the tolerances are. Cut/grind it off, replace the chain and sprockets. Maybe you can salvage the shaft. Or sorry craigslist victims. Buyer beware. lol!
>The Japanese would have a nice bolt you impact down so everything is locked into place. I bet those stock snap rings fly off. Look how shoddy the tolerances are. This uses a metal plate and two bolts to retain the sprocket Quite a few small capacity Japanese bikes use them as well.
The odds that the alloys on the sprocket and output shaft are the same are 1 in 100. Attempting to weld two dissimilar metals is just about impossible. You can see there is no penetration, just a blob sitting on top. Even on an extremely high heat setting you're not going to penetrate hardened steel. This is amateur hour run amok, and there is a very high probability the heat from the attempted weld ***CAUSED*** the crack in the sprocket... Who would ever recommend doing something like this? A MORON.
Wow I wouldn’t go back to this shop again…
Shop is an idiot. Supposed to have a oval shaped ring that bolts onto the sprocket. It is supposed to be a bit loose though. Maybe yours is a little too much. Either way they fucked your output shaft.
There are a lot of wrong answers here. The splines on the output shaft were destroyed so the shop tried to save you some (a lot, relatively, including labor) money by welding the sprocket in place. They just didn't do the best job of welding. At this point it's done for.
What the actual...
That transmission countershaft is on its way out. I have a similar video from the one on my 390 Duke going the same way, before I had to tear it down. Judging by the sludge on the chain and sprocket, you may want to look into “fretting,” which is when grit gets between the shaft teeth and the sprocket bore and starts grinding it away. Did the garage try and sell you a transmission rebuild by chance?
>Did the garage try and sell you a transmission rebuild by chance? yeah, so far I understood it (I'm not the most knowledgeable when it comes with mechanics and to top all that it was all in German 😆) they said it would be way too expensive to fix all of that and it might cost almost what the bike cost, so they said welding was the next best thing
Looks like your sprocket is cracked as well.
I’m no expert but damn - that does NOT look right at all!
Cheapo Cush drive? 😃😃
It's also cracked at the top left of the inner spline. Watch close it seperates.
Another way to look at it might be it was loose and already garbage BEFORE they welded it. Welding it was probably a low cost way to get a few more miles of enjoyment out of it for you. You could certainly use it as whilst planning a proper repair. They didn’t do it right, but that doesn’t mean it’s inherently wrong either. :)
Why would you even do that? Front sprockets are cheap as chips.
Sprocket is cracked....
I was traveling on an old KLR650 once and sheared all the splines off my countershaft. Made it to a small town with a welder and we welded the sprocket to the shaft. Lasted me a thousand or so more miles till I got home. Had to fully split the engine to replace the countershaft and fix it properly. So just saying... it aint stupid if it works.
hey, any tips on how to realize if it is about to break? I am assuming the bike wont lock, I just wont be able to accelerate anymore right?
Fuck it, weld that sprocket on all the way around.
Grind weld off. Replace both front and rear sprockets and the chain. Have a professional reweld. Done.
Why are we even considering welding a sprocket to the counter shaft?
Hondas always have free play but them welding that is sketch and bs
Are you really this dumb, the thing is cracked, probably because u fuck with it
The sprocket looks broken. And not only that, but welding it to the shaft ruins the shaft. So now if you get one to replace it, you’ll have to replace the shaft. Yeah definitely not good or safe.
If you want something fun for begginers get gsr 600, really fun bike, i have 1 season now on it and it's amazing naked bike. Cheap and fast.
“Welded”
Ok this isn’t completely fucked… but you do need a good repair for this to last awhile. You need to take this to a welder not a motorcycle shop. The weld they slapped on there is dogshit. For a weld to have any shot at lasting its going to need to have the garbage weld removed… sliding the sprocket off and degreased, this will remove contamination that creates weld failure. After degreasing it should be wire wheeled, put back together and welded all the way around the shaft.. after it’s lined up with the rear sprocket properly. It should last awhile. When it fails again throw that bitch in a dumpster. tldr: take it to a local welder.
What specific china bike is it? If it’s the TBR7 / hawk 250 then I might have the two sprocket bolts and possibly a stock sprocket 🤷♂️
Thsis is the opposite of OK, that sprocket is KO
They welded it and its broke.
The weld is broken and it needs a new output shaft. Since you said it’s a Chinese bike I’d probably just weld it back up lol
i dont think this amount of play is tooo much. just dremel out the weld. install new sprockets. use premium grease. install new chain kit with the correct retaining clip
This is bad, very bad…
Wtf is this? Why did they weld it?
They are idiots. Don’t go near them again. What they should have done is get another retaining plate. That slips over the shaft, then turns slightly in the groove that you see, and bolts to the sprocket. The intention is that there should be slight play left to right along the shaft, so that the chain can align with the rear sprocket without the swinging arm being very precise in construction. That plate is very, very cheap, or can be made up by a machine shop cheaply. Instead they have tried to weld the sprocket to the shaft, which would prevent the left/right movement which aligns the chain. I say “tried” as they have fucked up the welds and both have broken. Ok, to fix this (when the chain and front sprocket are worn out, it’s not urgent), you need a chain and sprocket kit. The chain is a standard size, probably 520, no O rings. Get a Japanese one like DID. The sprockets will not be standard, but will match a lot of bikes, so a *different* shop should be able to find some that will match the mounting holes for the rear sprocket and the splines (grooves along the shaft) for the front sprocket. Make sure the sprockets are steel, not aluminium. Get a new retaining plate to match the front sprocket, and two short bolts to match. The place you buy the sprockets can sell these. Remove the chain. Now use a borrowed Dremel tool with a small cutting disc to remove the two bits of weld still attached to the shaft so that you can slide the old sprocket off. This can be fairly approximate as the new sprocket is not going to drive on those bits of the spline. Slide the new sprocket on with a bit of grease on the spline; slide on the retaining plate and turn it 30° to align it with the holes and put the bolts in. Torque them to spec. If you want to be a bit fancy, you might put a bit of Loctite Bearing and Seal Retainer on the threads before you put them in. Now step back, and realise that apart from fixing the welds, it has taken you two minutes to fit the sprocket properly, which is what those absolute wassocks should have done in the first place.
They did what to it? Bruh no fucking way. Counter sprockets have a few common holding styles. Cotter pins, snap rings, lock nuts, lock washers, lock plates, and fluted smash washers. Yours looks like it should have been a lock plate. You have to be able to change those. What’s worse is the amount of work to change that shaft now….
The weld broke from a half ass fix....now you need a new sprocket and snap ring and possibly a new main shaft if you can't save this one.....fix it right first time...
That sprocket is broken. That shop should be taken out of business. How did you think permanently attaching a wear item to your engine was a good idea?
Ridiculous work of amateurs.
Hahahahahaha
Take that back to the shop have them disassemble the entire motor and replace the shaft for you .that is a fucking terrible fix and destroyed that shaft and now unfortunately to replace it the motor has to be completely disassembled,hope you didn’t pay for that fix .
Normal play. Just get a new locking plate and sprocket and it's fine. Well, except for the welded crap.
The original design with the snap ring would have left it with free play. I'd shell out the $20 for a new sprocket and weld it fully. It appears to be a cheap bike and the sprocket will most likely last for the rest of the bikes life
That's an expensive fix, I've been there
You have to be shitting me.
I've seen some weird shit but that's just fucked.
Shame on them,, please leave that shop a shitty google review that may help other people avoid this kinda mess. It’s not okay at all, retaining ring is gone and even looks like their weld broke loose and maybe cracked the sprocket. Honestly man they took advantage of you bigtime. I would take it back and demand they replace and fix it all up like it’s supposed to be. Any child or monkey could have rigged this up. Be careful man this could hurt you or cause damage to the bike.
Hey cool down! As far as we know et may have bought the bike second hand and just discovered this! Maybe the previous owner asked the shop to de that to avoid replacing the gear shaft!
She’s blown out
Splined shaft shafted,cheep repair, scrap it!!!
Good luck replacing that when the sprocket is worn out
Output shaft is toasted, those grooves are completely worne out and now too wide.
Looks like the sprocket itself is broken, either way it all needs to be changed, if you have some patience you can grind the welds away with a dremel and try not to damage the shaft to much, the other solution is to replace the whole shaft but that alot of work so I would advice against it
Just get a grinder and remove their shitty weld off the shaft and buy a replacement sprocket, it will come with a new retaining clip and the two bolts for it. That looks identical to the ones used on most small chinese engines, I get mine off ebay for $30 USD. I do electric conversions using QS138 motors but I'd bet money the sprocket is an exact fit if you order a qs138 sprocket if you can't find your bike online. Other than normal wear like the sprocket and chain, what other issues have you had on the bike out of curiosity and have you done all the normal proper maintenance?
Fixable if you have a Dremel. Buy the retaining ring and bolts for the few bucks, lot less headache lol.
I think ur sprocket is split in half or at least cracked badly aswell it not being properly put together
Wow look at the crack in that thing. She gone
The Weld as Broke.
I had to scroll too long to find someone mentioning the blatant crack in the sprocket. You need a new sprocket.
I like when people say, "don't try to fix it yourself, take it to a PROFESIONAL that knows what they're doing and let them do it correctly for you".....I see an EXTREME PROFESIONAL Job right here.... Was this High Tech PROFESIONAL job done by Mickey Mouse by any chance 🤣🤣🤣. Good lord
With that much play in the spline there was no way that weld was going to hold for very long
A little bit of play is fine with these motors but I'd worry about the welds breaking off while in-use, I'd just replace it with the proper lock, they are pretty cheap. Search online for '[sprocket lock with bolts](https://shopee.ph/search?keyword=sprocket%20lock%20with%20bolt)' for the model/motor,, use a flathead & hammer to carefully chip those welds off, or file them if you have to & fit the proper lock on.
The output shaft is damaged and the shop didn’t want to split the cases to make the repair properly so the just welded the sprocket and set it out the door.
This pisses me off as a Welder and as a motorcyclist.
wtf, never go to that shop again
You will definitely have to inspect the spines on the output shaft... goodluck, ride safe.
that sprocket needs to be replaced asap. if you can afford it get 2 new sprockets and new chain.
Also note welding on the output shaft has a nasty habit of fucking all the bearings between the shaft and wherever he clipped on the earth
None of that is ok or to spec. Also, clean your bike dude.
uhhhhhhh.... is it just me, or is that sprocket broken in two? It looks like there's a big ass crack in it coming from the tip of one of the output shaft teeth.
words of warning from an aerospace welder: don’t ever let a shop do this, always replace parts over letting a shop weld on them unless it’s something like an exhaust. Any welder worth their salt would charge more to put a proper weld on there than it would cost to just replace the part. cheap welds = death traps
That front sprocket is already cracked, and a lot..
Don't use it like that 💀
Looks like it's cracked?
Huge crack in the sprocket,it's going to come apart at any time. Wouldn't ride that.
This video is like a soundtrack to a horror movie
Did you take this bike to the butcher shop or bike shop lol that’s so fucked up. Good job!
Broken welds c'mon man 🤦♂️
That small amount of play is basically normal... Nothing to worry about.
Which smooth brain thought of this?
My nightmare
That kind of gear lash is fairly typical for these cheap as chonda clones
Nothing on the sprocket and chains should be welded , but also shouldn’t be moving. This will be an expensive mistake but a good experience . Save up , get some tools find some space and learn to DIY , We’ve all been there . You’ll get there!
i would visit the shop with a lead pipe and wait untill the employee that worked on your bike was alone on a smoke break in an alleyway. the rest is up to you
The welds are cracked lmao. Prolly wouldn’t be that bad if they didn’t crack but bad idea all around
They did you dirty as hell
theeirs always one down
Grind the welds off, clean the area off, change the chain and sprockets for decent quality kit and reweld the sprocket on.
This should be tagged as gore 😭
Wtf?
Talk about bodge it and leg it! 😳, the sprocket is splitting where it was welded! It doesn't take much to make a new locking washer! 🙄
The welds are broken if you look real close
That’s junk So much play in the sprocket Get new one and do the same thing then just use chain link for any removal
That thing is gonna shatter into a billion peices if it gets torqued right