On Fri, 26 Oct 2012 19:49:21 -0700 (PDT), manfromvie@gmail.com wrote:   
      
   >I am planning to convert an exercise bike to a power generator in the   
   following way: the belt of the exercise bike drives a hub which has the front   
   sprocket of a mountain bike attached to it. A bicycle chain drives a standard   
   six speed sprocket (gear)    
   set and derailleur of a mountain bike attached to a hub which also drives a   
   power generator. My ideas that I could switch gears if I wanted a higher   
   workout. I hire work out at a lower gear would mean that the power generator   
   turns faster. So here are my    
   questions: since I'm charging a 12 V battery the power generator cannot output   
   of a higher voltage but must output more amperage when it turns faster. can   
   anybody recommend which cheap power generator I should buy which changes   
   amperage not voltage with    
   higher rotation speeds? What else do I need? Thank you very much for your   
   input.   
   I've got a better idea. Come and get the one I have sitting out the   
   back. It is a commercially built execize bike that used an alternator   
   as the load cell. Chain drive to hub on 12 or 14 inch pulley that belt   
   drives the alternator. Needs new belt, seat, and other bits - but the   
   basics are all there, in Waterloo Ontario.  Cheap.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)