Yamaha TRX850 Enthusiasts Forum

Just replaced the sprockets and chain on the TRX. The old ones were starting to get pretty worn (longest interval I've got out of them but - 2yrs 3 months) The chain was shit and both the sprockets were starting to hook.

Was running JT sprockets before and an RK525 XSO chain.

Decided to splash out and buy Chain Gang sprockets and a similar RK525XSO chain.
Sprockets are 17t front (std) and 42t rear (3 up). I have used this combo ratio before.
Fitted them with no problems. Checked cush drive and all bearings, everything seems ok.
Adjusted chain as per usual and went for test ride - 15kms - all seems fine, adjustment good.

Rode to work next day (yesterday) 26km commute into the city. Bike felt good and rather smooth compared to the way it used to run with the old worn out chain and sprockets. Got off bike when parking it and noticed there was a fair bit of slack in the chain. Rode home later yesterday, no dramas. Still the same amount of slack. Got it up on the paddock stand and re-adjusted the chain. This chain seems to have a tight spot in it from new maybe 2. Took it for another spin and all seemed fine.

Everytime I've changed a chain and sprockets on this TRX, they have always seemed to need a bit of adjusting until they settle down. Is this normal or just something peculiar to twins, and odd firing twins at that? Is it maybe that I've bought a dodgy chain that had a bit of stretch in it from new? Are RKs any good? Are there better brands, DID, Regina, Tsuabaki?

I will keep an eye on it, and adjust if necessary. Thankfully it's going in for a 90,000km service at Lloyd's on Friday so I'll ask him? Maybe all it needs is another new chain.

Can you see why I like shaft drive bikes?

Any ideas? Ta

Bob

Bob its a commen thing on twins mate . my tls is hard on them my trx was to but not as hard. you just need to check them a bit more offten. it will settle in after about 500 to 1000klm. mate ive tryed allmost all brands of chains and i like DID chains they seem to last the longest on the bikes ive had. The DID i have on my TLS has done 9500klm since put it on with new sprokets and they all still look like brand new

Thanks DAYS, I thought that was the way with twins too. When you haven't done this procedure for a while you tend to forget (especially with a dose of the flu - can't think straight)

How's the TL going? Maybe in line for a promotion at work so more $$$$$$$. Thinking of splashing out on a new bike but will keep the TRX - resale value these days is not great. Something to keep me grounded. Wouldn't mind a 'Busa, though....ha ha

Bob

mate TLS is going great have spent a bit of cash on it lots of mods
go the busa mate they are a great ride
here is a pic or two of the tls


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WOW really nice lookin scoot DAYS...

Those pics almost made me pitch a tent in my jeans.... looking good...