From: clare@snyder.on.ca   
      
   Any of you guys have experience with timing belt drives? I need as   
   compact as possible 1 1/2:1 reduction from a 600 rpm  2.5HP engine   
   (3600 crankshaft RPM with 6:1 reduction) then another 1 1/2:1 after   
   that (so lower speed higher torque) ( total reduction 13.5:1).This   
   will be driving a 20 inch diameter 2 inch wide tire/wheel.   
      
   How wide and how large do I need the small sprocket? For simplicity I   
   would likely like both stages identical. This simplifies everything   
   including tensioning   
   Small sprocket on output shaft  driving large sprocket on jackshaft   
   turning small sprocket driving large sprocket spinning on output shaft   
   of the engine/gearbox  with wheel attached to that sprocket. Distance   
   from center of small sprocket to outside of large sprocket cannot   
   excede 7 inches.   
      
   Is this possible/feasible???   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)