Question about Chain Drive

Discussion in 'Motorized Bicycle General Discussion' started by Unsolved Rubix, Jun 26, 2008.

  1. Unsolved Rubix

    Unsolved Rubix New Member

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    My cousin comes back in town next week and he has lots of tools to help me with my Bike and I was wondering how good of an idea is it to have a chain drive that is a push start?
     
  2. deacon

    deacon minor bike philosopher

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    all the china bikes mostly are drag start if that is what you mean. They work just fine.
     
  3. Unsolved Rubix

    Unsolved Rubix New Member

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    Yea, that is what I meant, My only question is what if there isn't a clutch?

    What are good ways to make a clutch?
     
  4. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    Make a clutch with a belt drive and spring loaded tensioner.
     
  5. Unsolved Rubix

    Unsolved Rubix New Member

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    Ok, My first goal this week will be to get that busted bolt out of the motor
     
  6. deacon

    deacon minor bike philosopher

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    I have no experience with chain drive except the china girl kit which has a clutch.
     
  7. Unsolved Rubix

    Unsolved Rubix New Member

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    This is a 21cc motor I hope it has proper power.
     
  8. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    You should get about 15-20 mph out of it.
     
  9. Unsolved Rubix

    Unsolved Rubix New Member

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    What kind of gearing ratio I should go with?
     
  10. deacon

    deacon minor bike philosopher

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    I think you would be better off with friction drive with so small an engine. I have no particular reason for saying that just seems it would be easier all around.
     
  11. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    A friction drive would allow easier gearing changes....by changing the roller. I have no idea where to start as far as gearing...I sold my Spitz awhile back so I can't check it for you.
     
    #11 Bikeguy Joe, Jun 27, 2008
    Last edited: Jun 27, 2008
  12. Unsolved Rubix

    Unsolved Rubix New Member

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    Yea, well I may have a 33cc coming my way soon. I think I am working things out to make it a belt drive instead.
     

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