The_Aleman
Well-Known Member
The 4G's use a freewheel output sprocket for easy pedaling, but they have to be at least 12T and considering their small size, not that reliable.
My 2010 model 4G has an 11T and it works fine with a SBP shift kit. Freewheel outputs work great with shift kits because they don't freewheel while coasting
with engine running, they only freewheel when pedaling with engine off. While coasting with engine on, the freewheel action is done by the rear hub.
Those are some great suggestions. Thank you! Are the 10g engines available? Source?
I'd like to learn more about 'jack shafting' and what engines you can do that to. Any links?
Thanks again!
You can run an SBP shift kit on your existing setup. You say you're interested in low-speed cruising, I think a shift kit will be the best option for that.
You'll still have the problem of added resistance while pedaling engine-off, tho. In fact it may be worse because an extra chain will be thrown into the equation.
It's possible to modify the jackshaft input with a reverse freewheeling gear however, this will eliminate most of the added resistance.