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  1. P

    Starting my first ebike. Need some advice.

    no clutch in the roller. I am going to do something like keplers design and have the roller swing out of the way when not in use. I understand what you are saying about the larger roller having more torque but think of it this way. with each revolution of a 1.5in roller your bike will travel...
  2. P

    Starting my first ebike. Need some advice.

    what I was trying to say is that if your bike is going 30mph, then the surface of the roller is also traveling at 30mph reguardless if it is 1in in diameter or 3in in diameter. obviously, the larger the diameter of the roller the more you must gear it down. With your roller being direct drive a...
  3. P

    Starting my first ebike. Need some advice.

    They are not really made to be bearing carriers, but the work perfectly. http://www.vxb.com/page/bearings/PROD/Kit7228 8mm. they sell these in 8, 12, 16, 20, 25, and 30mm sizes, they a very high quality, that website also sells bearings in every size you could imagine. Regurdless of the...
  4. P

    Starting my first ebike. Need some advice.

    seperating the wires in the scorpion was very simple.
  5. P

    Starting my first ebike. Need some advice.

    Finally got some parts for my drive unit.
  6. P

    Starting my first ebike. Need some advice.

    Kepler's design is what originally got me interested in the idea of a friction drive. I love the simplicity of his design, but I want to have the ability to adjust my gear ratio. I also feel like Kepler's design might be hard on the bearings in the motor. Does anyone know if a properly setup...
  7. P

    Starting my first ebike. Need some advice.

    Hello, My name is Patrick I am new here but have been looking at this fourm for almost a year, very cool stuff. I finally have some extra cash to start my project.I have a specialized hardrock MTB that I plan to do a self engaging friction drive on using a scorpion 5525 170kv (2300 watts...
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