Front sprocket offset

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Sep 19, 2012 | 11:15 AM

ctluba

Thread Starter

Road Captain

Joined: Sep 2012

Posts: 666

Likes: 25

From: Ct

Front sprocket offset

Hey guys,

I have a build thread up in the softail forum, "crazy monster".

I have a situation going on, long story, but it is all spelled out in the build thread.

Without getting into all the details, How much offset can a front sprocket take?? I would figure anything up to a 1/2" would probably not be a big deal. Anything over that seems like it would not be able to be done without starting to talk about spacing out the primary, which I dont even want to think about.

Any info appreciated.

Sep 19, 2012 | 04:19 PM

grbrown

Club Member

Joined: Jun 2007

Posts: 45,429

Likes: 2,897

From: Bedford UK

The front pulley is much wider than the belt and fills much of the space between the trans and primary cases. So if you don't want to move the primary, you can move the belt line a little closer to the primary, or use a narrower belt and gain on the reduced belt width. I replaced my 1 1/2" stock belt with a later spec 1 1/8", which also involved a swingarm swap, although not as radical as you are working with.

An alternative is to go to a chain drive, but even that is playing with small amounts of extra room. The next and expensive possibility is a cross-over trans, where the rear drive pulley/sprocket is on the right of the bike, which should open up the options for you.

Sep 19, 2012 | 11:31 PM