.....how many shims and what sizes I used when I shimmed the d*mn swingarm........... ...........been playing around with another sprocket carrier and sprocket...... ...........I noticed the previous sprocket teeth were over to one side of the chain and this one is the same, so I wondered if slipping one thin shim out of one side of the swingarm and sticking it in the other side would align it a bit better.........on the other hand it might be a waste of time. .........I worked out how to do it quickly without a strip down of the rear end (it involves using a rear wheel axle), but which bl**dy shim to move........blast.
I know the right side has more shims than the left and that there was a thick and a thin, but there was another one as well..........and I'm sure there was only one on the left (a thick one)...... I think there are only three sizes of shims......0.1mm; 0.2mm; and 2.0mm..........so it makes sense to move the 0.2 over to the left side..... It just so happens the sprocket has to move to the right, but I wonder if 0.2mm would be enough without altering the wheels being in line.......
Checked my front / rear wheel alignment and it is correct, so that makes the swingarm shimming correct. Therefore I wonder if it would work if I made up a front sprocket retainer (0.5mm thick say, without the teeth) as a shim spacer behind the proper retainer to move the front sprocket towards the engine a bit.....damn sight easier than messing around with swingarm shimming and upsetting the wheel alignment....
I'm confused (doesn't take much:smile. When you say the rear sprocket needs to move right, do you mean towards or away from the hub? I always assume left and right are as if you're sat on the bike (the right way round ). Beacuse, I thought you were suggesting that the rear sprocket has to move to the right (i.e. inwards). Which woud imply you need to move the rear sprocket right (in) and/or the front left (out) to realign the chain run (in effect). Wouldn't it? So the shim spacer on the front to move the engine sprocket in would work against your issue??? Oh, I've confused myself now.. Mick..
Maybe you are right..........and I have confused myself........... Anyway, something needs shimming!!
would it be a better long term solution to measure how much out and have sprocket face machined down on a lathe to correct allignment i usually use a half inch (12mm ) bar clamped to the rear sprocket that is long enough to run along side of front sprocket then measure gap as long as the bar is straight anyway
I done been checking....... ......sprockets are aligned; wheels are aligned........ ..........by logic of that, the swingarm shimming is correct........... However, I have always been aware of a deep score in the paint around the sprocket which I assume was from a 'chain-off'..........the sprocket teeth profile is OK...... ......so I reckon a previous owner had a new chain fitted on the 'old' sprockets over five years ago......... I fitted a new front sprocket just after I did the swingarm swap and shimming, and of course it centralised the chain at the front, but the wear on the rear one (pattern type...) and possible wear on the chain (DID ZVM) is making the chain biased to one side of the sprocket....... There is approx 0.38mm space either side of the teeth to the side plates, so in reality I'm seeing an approx 0.76mm gap on the right side of the sprocket and I know my swingarm shimming was a d*mn sight better than that..... Still........could all be down to a sh*tty rear sprocket...........and seeing as I hadn't noticed it in 5 years, why am I bothering?
why are you bothering Al? because you are a Ducati owner. we let our bikes teach us the dark arts of being a mechanice and we like to tinker with them for teaching us
