build suggestions for a logging road hill climber

Discussion in 'Motorized Bicycle General Discussion' started by motorbicycling_hunter, Aug 24, 2012.

  1. motorbicycling_hunter

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    my needs are not speed but reliability and torque for steep off road hills miles away from help if a breakdown should occur.

    i have a GIANT made 25" frame non suspension mountain bike for a start and a $500 budget.

    open to 2 or 4 stroke systems.

    recommendations please.

    BIG thanks

    .shft.
     
  2. professor

    professor New Member

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    I can't think of any system that goes slow enough (slow = tq.) to be of use for you. How about a motorcycle?
     
  3. motorbicycling_hunter

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    thanks for the reply.

    weight is an issue, lighter the better, so a motorized bicycle is a possible solution.

    how about the 2.5 HP HONDA GXH50 with low gearing?

    like this maybe?

    http://www.youtube.com/watch?v=tGW_KZxsbIo
     
    #3 motorbicycling_hunter, Aug 24, 2012
    Last edited: Aug 24, 2012
  4. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    Two stroke kit with a 48-50 tooth sprocket will get you where you are going.

    I can ride in my yard at a fast walk with a 44 tooth, so the 48 or 50 tooth should be fine.
     
  5. motorbicycling_hunter

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    sounds good to me.


    thanks for the replys.
     
    #5 motorbicycling_hunter, Aug 24, 2012
    Last edited: Aug 24, 2012
  6. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

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    A 2 stroke engine kit and a heavy duty shift kit from www.SickBikeParts.com
    would be under your budget and climb hills like a mountain goat.
     
  7. motorbicycling_hunter

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    now i'm getting excited!

    thanks MotorBicycleRacing
     
  8. KCvale

    KCvale Active Member

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    Jackshafted 4-stroke to a 7-speed wheel.
    You can't get that for $500 though but they rock.
     
  9. motorbicycling_hunter

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  10. Dan

    Dan Staff
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    I have a Honda GXH 50 and man, it is a great and uber reliable engine!

    Starts like it wants to run and really smooth. I think it is well worth the $.

    It sat for at least a year if not 2. Cleaned the carb and it started first pull.
     
  11. motorbicycling_hunter

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    yes, all the honda engines i have owned have been very reliable. tempting.


    how strong are mountain bike wheels?
     
  12. Andyinchville1

    Andyinchville1 Manufacturer/Dealer

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    HI,

    FWIW - We can go up to about 124T on 1/2 pitch chain....You should be able to climb most anything w/ gearing that low!.....Actually, you'd probably run out of traction or flip backwards first.

    Andrew
     
  13. motorbicycling_hunter

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    thanks Andrew, that's excellent.

    the plan is to ride up the hills and quietly [no engine running] ride back down them.

    2 stroke is also a good route, simpler and more angle resistant [no oil pan]. can always upgrade to higher 2s quality motor later.

    there is also the possibility of towing a small trailer.
     
  14. Dan

    Dan Staff
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    For ride low, ride deep in stealth mode, have you considered electric bikes? Or a hybrid.

    I have never owned one (yet) and don't know how they do as hill climbers but would be quiet.

    Now am thinking a e-pusher trailer. Really dunno if that would be a good choice for you. Just typing out loud.

    http://www.google.com/cse?cx=partne...15#gsc.tab=0&gsc.q=electric pusher&gsc.page=1


    Hybrid or pusher trailer and motorized bike? LOL, think I talked my self into another project.

    .boogy1a
     
  15. motorbicycling_hunter

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    sounds like you have motor bicycling fever. no known cure. ;)

    so many options, i like it.
     
  16. Ludwig II

    Ludwig II Well-Known Member

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    Taking the needs into account, a 2 stroke engine with a reed valve seems the best way to go, offering better low end torque than a straight piston ported engine. Also, if you have no restriction on cc apart from the weight and size, something bigger than a 50 will be good as it will be less stressed under load.

    It needs chain or toothed belt drive as well; friction from a roller or plain belt will disappear when they get wet.

    I'd survey your options about availability of suitable engines and what engineering facilities and manual skills you have and then decide.
     

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