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  1. R

    On Designing And Using RC Drives

    When using designing and using RC motors bike drives, it is important to understand what the throttle does, and how power is controlled. First the throttle. I always thought the throttle controlled motor voltage. Experience has taught me otherwise. An example: Where I live there is a 3 mile...
  2. R

    1000 Watt Mid Drive with True Double Freewheel

    The very first system I designed, was a 1000 watt mid drive. It had one belt stage, and one planetary gearbox stage. I gave up on it, because was kludgy, and it ate roller clutch double freewheels for lunch (the roller clutch was overloaded in the engaged direction). Also because the two...
  3. R

    750 W Chain Puller; Fits Most Bikes (+Video)

    http://www.youtube.com/watch?v=ytYuosP2Blg Since I started developing drive systems 3 or 4 years ago, I have had as a goal, a chain puller that would fit nearly any bike. Finally! Shown below is a 750 Watt Drive Kit that mounts on a standard, slightly modified, bottom bracket. The only...
  4. R

    500 Watt Mid-Drive

    I have always been a fan of thru the gears drives. I have both hub motor and thru the gears bikes. I do a lot riding on crowded bike/walk paths (I live on the sea shore). A geared drive allows me to select the appropriate gear for conditions (slow/fast) and not burn battery energy heating up...
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