Bike has eaten chain!

[wots]

Replaced the ER6 chain, just before Euro trip, with Renthal sprockets too (all standard size). Chain is a DID Heavy Duty.

It was perfect a few days before we left. Got to Lille, about 200 miles and it was slack, proper slack. Obviously you expect a bit of stretch initially but it needed a lot of adjustment. A couple of days later and it was the same again, needing adjusting. It's now at the point after about 1500 miles where it's nearly beyond adjustment. When you pull the chain off the back sprocket it moves a fair way, pretty much half a tooth depth. Changed the rear for a standard JT sprocket, just in case and it's the same.

Just a bad chain, bought from Wemoto so not a chinese knock off. The Mrs rode it mainly and doesn't abuse it.
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Currently: Yamaha DT 125 LC2,Repsol Fireblade, and Bumblebee MSX 125

[Hetzer]

Sounds more likely the adjustment mechanism is shifting or is borked in some way. I assume its markers are showing it hasn't shifted at all? In which case it might be something else shifting that's not immediately observable. I can't see any way a legit quality chain could stretch like that. Possibly counterfeit?
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"There's the horizon! Ride hard, ride fast and cut down all who stand in your way!"

[wots]

[map]

My lad had a chain go that he got from WEMoto. I called them up, explained. They expressed surprise, checked my order date and sent replacement.

I'd expect to look at chain adjustment approx. every 500miles ballpark. Which reminds me, must get around to fitting an oiler.
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...and the whirlwind is in the thorn trees, it's hard for thee to kick against the pricks...
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[Hetzer]

Are the adjustor-bolts sound?
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"There's the horizon! Ride hard, ride fast and cut down all who stand in your way!"

[wots]

[Hetzer]

Are you sure the wheel was correctly aligned? If it was out of whack that might cause a good chain to stretch abnormally. If it was aligned correctly it has to be the chain is defective or counterfeit. Either way, refund.
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"There's the horizon! Ride hard, ride fast and cut down all who stand in your way!"

[kramdra]

Had a similar problem with a DID Heavy Duty 428 chain on a 125, also from wemoto. I would suggest that it may be called heavy duty, but is infact a pile of shit that will need constant adjustment.

Ask for a replacement ASAP, pay extra for a DID X ring chain. They will do 10,000 miles with no adjustment, and perhaps 30,000 in total (525 on a cbr6).

[wots]

Garage changed the chain when the did a rear tyre change (I supplied chain and they fitted). Will give wemoto a ring and see what they have to say.
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Currently: Yamaha DT 125 LC2,Repsol Fireblade, and Bumblebee MSX 125

[CestrianX]

I doubt Wemoto will like the thought of the garage changing the chain, perhaps they will assume something underhand has happened.
Of course I wouldn't suggest that the garage isn't top notch but your last post rang some alarm bells for me.

[wots]

[wots]

Good call, thanks guys. Wemoto sending a replacement, they would've sent new sprockets too, but they couldn't find the order. In all fairness I'm not worried as I now have more sprockets than I know what to do with.
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Currently: Yamaha DT 125 LC2,Repsol Fireblade, and Bumblebee MSX 125

[Pigeon]

[cb1rocket]

You put a new chain on worn sprockets......of course it's going to wear out quicker. Replace chain and sprockets as a set, never mix old and new
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Honda H100S2 Rebuild - https://www.bikechatforums.com/viewtopic.php?t=253852

[wots]

[Robby]

Generally "heavy duty" chains are just cheap, plain chain. Going back a few years the choices would be:
Standard
Heavy Duty
O-ring
X-ring

If you have a non O-ring chain, you need to lube it a lot more often (or use a chain oiler). As soon as they get dry, there's no reserve or lube as you find on an O-ring chain, just metal on metal wearing the thing out.

I used to use them on my Honda 250s, but they would get lubed every 100 miles or so. Those bikes were a 250cc single with no proper cush drive, so they ate chains anyway. A heavy duty chain was under £20 from David Silver's, so I didn't care if it only lasted 5k.

[wots]

The chain is of exactly the same type that came off a DID (not sure of old one was Heavy Duty or Standard), which had been on for the last year and no idea prior to that, as that's when I bought it. I had it checked at the MOT in October and they said maybe consider replacing chain in a few months but it all looks ok, including sprockets. I bought Chain and Sprockets in January, didn't change until May. As it stands I have 1500 mile chain which is far worse than the one that came off. It's an X ring chain by the way.
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Currently: Yamaha DT 125 LC2,Repsol Fireblade, and Bumblebee MSX 125

[Vincent]

Can you post a clear close up of one of the links with the "DID" stamp on? Where did you buy it?

You can buy 1000 fake DID chains from China for $1.20 each and sell them as real ones for about $100 each.

I stuck with gold ones to avoid the fakes but they're doing them too now
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Space Is Deep

[wots]

[Itchy]

So DID are like EBC these days?

EBC used to be the brand to go to for brakes, but are now junk.


Thinking about it OEM chains seem to last longest, probably go for OEM.
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[wots]

[davebike]

Did you replace the sprockets when the chain was fitted ??
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Dave
NC750Xdct + others at work !
davebike1@gmail.com

[DRZ4Hunned]

My uncle bought a load of agricultural chain and swears it's exactly the same as the stuff most motorcycle brands flog. I've used it for about 2 years now on my YBR125 and it's been fine. Think it worked out at about £3 for the YBR.

[wots]

[silky666]

So to summarise:
You bought a new tyre from wemoto and then swapped the er6 chain for the cbr one .... but the tyre is now stretched and the sprockets are bald ???!

My advice is BUY A SINGLE SIDED SWINGYARM VFR and grow a beard.
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