Just changed my front sprocket from a 11 tooth (as i bought it) to a 10 tooth keeping the 42 on the rear (as standard on an 03 315), but the chain i took of was 102 link, as is the chain i have been advised to put on !

What chain do you use on a 10-42 set-up, with the wheel spindle set nearest to engine ?

Thankyou.

Gaff.

What ever fit's

The maths to work out the difference in circumference of such an irregular shape as the shape the chain forms is more than I care to think about after a few pints.

Shove it on and get it cut.

Easy way to shorten the chain:

Drape it over the rear sprocket, grid or file the pins flush with the plate and knock 'em out with a punch.

Make sure both ends of the chain end with 'inners' or 'male' ends, and when the chain is on the sprockets, there is only one tooth between the ends where the master link goes.

If your chain isn't too whipped, then you'll know how many links it should be for next time you buy one.

When I had a full-time shop, my answer to all the different chain lengths was to buy bulk length and cut every chain to fit. I never counted links.

If possible use the rear cam stop position. This lengthens the wheel base and improves traction. You'll be surprised how much differance it makes.

........and makes it more difficult in tight turns.

wat 1" (max) makes it harder in tight turns? how much harder?!just do a big endo and swing it round

I would definitely try it long before you shorten it. What have you got to lose?

Post what you think after you ride it. I'm interested in your gear change.

My '01 Sherco came with a half-link in the chain even when the chain would have fit without it.

Presumably, somebody thought the extra wheelbase was desireable.

I'm quite sure I'll never be able to appreciate the difference.