Sprockets Smaller Sprocket For Single-Speed Bikes

Discussion in 'Transmission / Drivetrain' started by 5-7HEAVEN, Feb 8, 2009.

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  1. 5-7HEAVEN

    5-7HEAVEN Guest

    On "The Whizzard's" maiden voyage yesterday, I rode to my jobsite and back, then motored west to Home Depot for stuff, a distance of 25 miles. The bike performed flawlessly; this surprised me cuz I rescued it eight days ago from months of neglect in an open bike lot. Changed oil and crumbling fuel lines, tightened stem, added air and awayyy she went!:grin5:

    Brakes need attention but that's another post.

    My question is if it's possible to change to a smaller sprocket on single-speed bikes. This Whizzer is freewheeling; it has a small drum brake, not a coaster brake.

    However, I'd also like to swap to a smaller sprocket on "The Dragon Lady", my twin-engined cruiser with coaster brake.

    The reason is that both bikes need my pedal-assist during midrange and top speed. My other dual-engined monster "The Iron Dragon" has five speeds and fifth gear REALLY helps pull the bike, even at speeds over 30mph

    What should I look at changing, the freewheel sprocket or the crankset?

    IMO, adding more pedal-assist to a Whizzer bike or a motorized coaster bike would definitely enhance both bike's midrange and top end performance.

    Of course low speed pedalling would suck without the engine , but I can live with that.

  2. augidog

    augidog New Member

    both my bikes use a 52T chainring and 18T coaster sprocket...major highend pedal-assist, 24mph...and not really too bad taking off or uphills, either, i love pedaling :helmet:

    you can get whatever you need (chainring or sprocket or both) for both yer MB's, shop around :cool2:
    Last edited: Feb 8, 2009
  3. 5-7HEAVEN

    5-7HEAVEN Guest

    Thanks for the tip, augidog.