Originally posted by stumper1
The biggest I could fit was a 26. 27 was borderline - seemed just a little too tight for me. I guess a smaller spur would solve the problem ( smaller spur = smaller pinion right? ). Is there any advantage to having a larger spur gear?
Also, I'm using TRC tires. I had to trim the lower pod on the left side for clearance. Should I be shimming them out or was trimming the right thing to do?
You are correct. Smaller spur=smaller pinion. Dropping to a 96 tooth spur along with a 27 tooth pinion would give you the 1.67 rollout you were looking for. There has been alot of debate about spur gears and whether one size has a mechanical advantage over the other. I don't have an answer for you on that subject.
Double check your width. That is where the notch in the lower plate comes in handy. The rear end should be 6 3/4" overall or 3 3/8" from edge of tire to center of notch in both directions.
D.P.