Originally Posted by Venice Motor Bikes
The best (& hardest way) to solve this problem is to off set the engine & rear sprocket.
That's the plan on my build. I'm using the rear hub off a moped so it's already designed to work with a 3" tire. I plan on making an engine mount that's a hybrid between the Manic Mechanic mount and a 4 stroke mount to get the offset I need and the ability to move the engine fore and aft to adjust the drive chain tension.
Someday I'll have all the bits an pieces collected so I can make the darn thing instead of just talking about it. lol