3.5 motor power transfer ideas

Discussion in 'General Questions' started by Topcat, Oct 27, 2008.

  1. Topcat

    Topcat New Member

    I just got donated a 3.5 hp edger motor, and I am looking for the best way to transfer power to the back wheel. I have noticed some using a belt, but where or how did you get the back rim with a pulley ? Any helpful websites for dummies? Also, I am going to modify a hardtail magna electroshock frame to accept the engine. Looking for the boardtracker look ! Your motorized bikes are truly inspiring ! Thanks Topcat :?:
     

  2. 5-7HEAVEN

    5-7HEAVEN Guest

  3. ZnsaneRyder

    ZnsaneRyder Member

    You could build a trailer for your 3.5HP engine to push your bike. Use a belt or a chain with a centrifugal clutch to drive the trailer wheel(s).
     
  4. bluegoatwoods

    bluegoatwoods Well-Known Member

    Maybe you could buy just the drive ring from Whizzer or GEBE? The GEBE would likely be the best fit. I'm only guessing, but it would seem likely that these items could be bought by themselves.
     
  5. Topcat

    Topcat New Member

    Thanks for the replies, now I've got several ideas! tc
     
  6. Motormaker

    Motormaker Member

    Is your 3.5 hp engine vertical(bottom shaft) or horizontal (side shaft)?
     
  7. ZnsaneRyder

    ZnsaneRyder Member

    If it goes to an edger, it's a Horizontal shaft.
     
  8. Motormaker

    Motormaker Member

    There are also edgers with vertical shaft engines.
     
  9. Topcat

    Topcat New Member

    Its a horizontal shaft. really too long, but I'm going to try a tranny, or an extra shaft to bring the drive in line with the rear wheel. Also looking to lengthen the frame ahead of the seat down tube. May also try a 45' bend galvanized elbow to join the lower fork area to the pedal area. Got some thick tubing on hand.:)
     
  10. Motormaker

    Motormaker Member

    Are you keeping the pedal function of the bike? Or is this a motor only affair?
     
  11. Alaskavan

    Alaskavan Guest

    You'll probly need to use a jack shaft anyway, to get the required gear reduction.
     
  12. Topcat

    Topcat New Member

    Would like to keep the pedals, but just going to depend on what I find to transfer power to the back wheel.:confused:
     
  13. Motormaker

    Motormaker Member

    It's easy to power a bike with a 3-1/2 briggs. It's alot tougher if you want to keep the pedals. I understand in some states you need functional pedals to stay legal. Have you thought about front wheel drive? Or mounting the engine above the rear tire?
     
  14. Topcat

    Topcat New Member

    frame build

    It begins, cut top tube and downtube. Going to bolt two small tubes to seatposts & downtube to lengthen frame , and sleeve top tube. Secure the sleeve and tubes w/ loctite on hardened bolts.
     
  15. ZnsaneRyder

    ZnsaneRyder Member

    NICE! After you get this monster built, there's a BIG engine thread in "Wild in the Streets"

    :evil:
     
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