Originally posted by Herminator
Well my wild guess is that since an alloy or steel spool causes too much wear, what about one machined out of some kind of rubber...
so it would have some give it in to cusion impacts.
I bet I'm miles off 
I would have to think for that type of diff that you would have way to much flex with the 39T gear
....but then again I`m probibally way off to
-Dave
