About to install a new chain and sprockets on my 99 Dark 750.
1) Are there specific torque values for the front and rear sprockets? Haynes doesnt say.
2) I understand that the rubber dampers on the rear get worn. Bike has 13,000+ miles. Should they be replaced as well? Should my local D dealership have em?
For the front it's pretty low - like 7nM as the screws are itty bitty. Just be sure to use loc tite
For the rear it's something like 40. There's a table in the FAQ
http://www.ducatimonsterforum.org/index.php?topic=373.0 (http://www.ducatimonsterforum.org/index.php?topic=373.0)
It lists 48 for the rear sprocket of an S4R
Rubber = Cush drive if you need to reference it. They do need to be replaced from time to time - but it varies. Inspect them - look for cracks deformity etc. If there's none, let it ride I say.
Sweet. Thanks for the link. So much info on this site.
Just one other question regarding chain length. See if i can explain my question understandably..
Its advised to slide the wheel all the way forward. Does the chain get set to proper length and tension at this point? (after taking off rear stand of course). OR do I slide the wheel forward, cut to length, then slide the wheel back to a relatively accurate chain slack and then tighten the axle, THEN set chain tension?
Or maybe otherwise put, when sizing the new chain, while the rear wheel is all the way forward, what kind of tension should be in the chain at that stage?
Last chain I just laid the old and new next to each other and cut the new one to same number of links.
With the axle position you don't want to be at either extreme - remember if all the way forward, how are your going to slack the chain to remove the wheel in the future?
if you feel like doing it via rolling the chain on as you described, I'd say set the axle at 33-40% towards the back from the most forward spot it can reach. That allows you to move it forward to slack it, and plenty of room to take up stretch and properly tension it.
Or - going back to counting you can look up the stock chain length (as long as you're running the same rear sprocket size)
Unfortunately im not running the same sprockets. Went up in the rear. Thanks for the info. [thumbsup]
i push the axle all the way forward, then fit the chain and see what options there are for axle placement depending on how many links are used. and if you want to keep the front down, go as far back as possible. want to shorten it or put less weight on the front, push it as far forward as possible.
I went up one in the front.
Had the chain initially at 40% towards the front.
After the first ride and chain stretch, it is about 40% towards the rear.
Plus I'm heavy, so it has flex when I sit on it.
hope that was helpful and not confusing.
I dont do any highway riding so thats why I went up a little in the rear. I think it will just take some eyeballing. I'll start in the middleish area with the axle and go from there.
EDIT
I figured it out. Mount both new sprockets, feed old chain through, make note of how many more links might be needed, adjust axle position accordingly, install new chain. Simple!
Thanks for the guidance folks!