KR-1S.co.uk Forum

You can clamp a piece of straight angle iron to the rear sprocket and get wheel central and see how it looks at the front end.
You can use a cheapo lazer line to see how it looks too

It seems all bikes are different and some don't even need an offset front sprocket

Mine is 9mm but if i have just a 9mm front offset sprocket then the chain will hit the inside of the frame(LC is narrower than Powervalve)

So i need something like 4mm shaved off the sprocket carrier and a 5mm offset front or 5mm off the back and 4mm front
If you take off the sprocket carrier you are bringing the chain towards the tyre though

If you have the sprocket and spacer put them back on, central the back wheel put your chain back on and have a look first,(might not need off set) could play about by putting some washers behind sprocket but in front of spacer.

The spacer on a ypvs is abit longer then on an lc, (ypvs on mine)
Remember some chains are wider then others,(heavy duty on mne,520 was to wide/close to frame)

As mentioned clamp straight edge.

Cheers for the info i will order a front sprocket as either way its going to make it easier to work out the spacing and hope i drop lucky and dont need any.

Looks like this could start getting complicated