Max torque on single speed freewheels?

Discussion in 'Hubs, Gearboxes, Sprockets and Chains' started by rudyauction509, Sep 12, 2016.

  1. rudyauction509

    rudyauction509 New Member

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    Wondering how much torque can be pushed through a single speed freewheel? I read somewhere around 200-300 ft-lbs. Thinking of building a motorized trike powered through a riding mower transaxle geared 2:1 overdrive through 2 chains to a standard freewheel on each of the rear wheels. Engine will likely be a 6.5hp to 8hp I'll pick up later on. Going to be a low budget winter project.
     
  2. rudyauction509

    rudyauction509 New Member

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    I have a good idea of the capabilities of the sprocket and its mount from the engine kits. Would the freewheels be stronger?
     
  3. WECSOG

    WECSOG Member

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    I know they will handle a 200 lb guy standing on the pedal at the end of a 175mm (6.88") crank. That is about 115 ft/lbs.

    A 212cc Pred does about 10-12 ft/lbs of torque, so up to 5:1 reduction between the output shaft and the crankset should leave a fairly decent strength margin.
     
    #3 WECSOG, Sep 13, 2016
    Last edited: Sep 13, 2016
  4. Tony01

    Tony01 Member

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    Deleted, sorry!
     
    #4 Tony01, Sep 13, 2016
    Last edited: Oct 15, 2016

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