Re: chain adjustment on a 900RR
I'm not sure it really matters if you adjust the chain on the side jack/kickstand or on a rear/race stand since the front sprocket, swingarm pivot and rear sprocket centerlines will largely be the same. That said, I believe the most slack is achieved when all three parts, (front/rear sprockets and swingarm pivot) are in a straight line. This is probably more likely when the bike is vertical and more weight is on the suspension - i.e., when it's on a rear/race stand. But this may be more academic than anything else. If you have a rear stand, try both. And for newbies, spin the wheel a few times to test the tension in multiple places. As chains and sprockets wear, tight spots develop. This is normal, but you probably want to take that into consideration when adjusting the chain to avoid premature wear.
From the "stands to reason" point of view, many riders don't have rear stands. I didn't for years and got normal wear from my chains by adjusting on the side jack/kickstand. I've also never heard of anyone adjusting a chain with a rider on the bike, but who knows? It may happen.... And if you have to make a mistake, better too loose (within reason...) than too tight. Puts less pressure on the bearings. Hope that helps.
Last edited by jrw929; 09-11-2011 at 12:19 AM.