Warped rear Sprocket

[RoyMember]

Doing a bit of maintenance on the bike on the weekend and noticed the rear sprocket has a bit of a wobble in it. Didn’t measure it but it would be more than 5mm I reckon by eye. Doesn’t seem to effect anything in operation but is it worth trying to fix/straighten.

At the end of the day the sprocket has done more than 3000km so may be time to replace anyway. Is it alright to change sprockets without changing the chain or should all be changed together.

[Mick DMember]

A 5mm runout visible to the eye, will wear out your running gear, in no time at all I would imagine.

The general rule of thumb is to change it all at the same time and actually have a mated set.
I have just bitten the bullet and bought a set of chain gang sprockets. Although the initial out lay may sound excessive they are worth every cent.
TB will agree with me here I am sure,they claim to out last traditional sprockets 3 fold. Using a chain gang sprocket will see you changing a chain a few times before the sprocket wears out.

To give you an idea on cost a 48 tooth renthal rear for my XR was about $85 a new chaingang sprocket was $125 a little bit dearer but worth the extra expence in the long run.

The front sprocket was $15 dearer than the OEM ones.

Suttos do a great price on chains so if you get a chaingang set of sprockets ring Mal at Suttos and save about $30 on the same chain from Chain Gang.

[RoyMember]

Thanks Mick, thats what I thought. I was going to fix it regardless of what the general concensus was here anyway. Just thought I’d get a feel for how serious a problem it was. I had heard of chain gang sprockets so will look them up.

[Mick DMember]

Bundyroy wrote:

Quote:

Thanks Mick, thats what I thought. I was going to fix it regardless of what the general concensus was here anyway. Just thought I’d get a feel for how serious a problem it was. I had heard of chain gang sprockets so will look them up.

I managed to bend my last X ring chain after it inexplicably derailed, I cut the section out and rivited a new 10 link piece of O ring chain into it and rode it like that for near on 3000km,(much to TB’s disgust) so if you think you can fix it go ahead mate.

[RoyMember]

By “fix” something, I’m including the replacement option. Whatever turns out to be the best value.

[ScottMember]

I have a supersprox stealth rear sprocket on my spare wheels that from new had a wobble in it. It appears when they rivetted the outer to the inner they didn’t get it quite right!! It doesn’t look pretty but has never caused me any issues.

[GregMember]

Both the supersprox stealth’s I have are the same Scott they have a little run out, but never caused a drama like you say. I use chaingang now

TB

[Aaron WildeMember]

Before anybody sayes anything yes there have been posts in the past about this but this one has a different spin.I know there are lots of schools of thought on replacing sprockets and chains as a set. As moto once said in a perfect world yes you should replace them as a set. I can see why the front sprocket would wear out quicker than the rear as its teeth are used three times more often than the rear. So realy you should change the front more than the rear. The other day a guy told me you should buy the best sprockets you can afford (chain gang etc) and replace the chain when it becomes stretched. He said he looked after a fleet of bikes on a farm and he tried lots of combinations and that way gave him the longest life. He also said that although o ring chains etc are good at keeping the crap out of the links this trait also stops the lube getting in to prevent wear. I spose different conditions will effect this a lot ie sand, road use high speed etc. Just putting this info out there to hear if you think there is any truth in it. This bloke knows his stuff and has been in the game for a long time. To anyone who is from up here it was doc.

[GregMember]

I reckon thats right in my opinion as well Aaron but you cant beat an ‘o’ring chain. Maybe you cant get the lube in but its in there cause an ‘o’ ring chain always gets far more miles then a normal chain on over 125cc bikes

TB

[RoyMember]

The thing I have found is that if a company has gone to the effort of putting an o ring into a chain then they tend to use quality parts in the chain and the chain doesn’t stretch much and then lasts a long time. Cheap chains are not good. More stretch than a rubber band.

[ChrisMember]

micknmeld wrote:

Quote:

Suttos do a great price on chains so if you get a chaingang set of sprockets ring Mal at Suttos and save about $30 on the same chain from Chain Gang.

Mick do you know which chain this was? X O DID RK?

Cheers….

[Mick DMember]

RK X ring a 520VY I think it is called. Just ask for the same chain TB and I run.

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