View Single Post
  #7  
Old 10-24-2010, 06:08 PM
Doc Sprocket's Avatar
Doc Sprocket Doc Sprocket is offline
*********
 
Join Date: Jun 2009
Location: Ontario, Canada
Posts: 15,677
Thanks: 723
Thanked 2,203 Times in 1,693 Posts
Default

RPM has to be calculated, but I would think the engine would have to drive a jackshaft for a primary reduction, then the jackshaft would drive say, the larger sprocket on the crank, then the smaller sprocket would go to the wheel. You'd lose the high-low shift, but retain the shifting at the rearend. Alternately, if you could find a way to add another sprocket to the pedal crank, the engine could drive IT, leaving the factory shifting intact.
__________________
Treat it as you would an aircraft frame and you should have no problems. -Name Withheld
The Manual- "Just the manufacturer's opinion of how to put this together."- Tim "The Tool Man" Taylor
Put down the wrench, and come out with your hands up!- Me!
Wrench, Wheel, Wreck, Repeat...