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  1. cozy35

    Li-Ion UPS

    Folks, I need some help/pointers. I need to make a UPS for a load of 8.4V at max 8A. So I am figuring I could use a 2S3P 18650 setup to supply the 8A demand at 8.4V being held at optimum voltage from a AC to DC PSU of 10A and a buck converter for the constant 8.4VDC connected to the BMS. The...
  2. cozy35

    Vedder VESC

    Is anyone using or have experience with the Vedder ESC as supplied by MayTech in a sealed aluminum case? I ask because I would like to know how sealed it is and will it be okay in wet muddy weather in and e-bike. They claim it is sealed, but I just received mine and it appears not to be fully...
  3. cozy35

    New Approach to 4500W Mid Drive

    After me previous plan for a compact, light weight mid drive, suffice to say that the synchronous belts and pulley system turns out to be a little more problematic in the way of reliability and torque handling. My previous post: https://endless-sphere.com/forums/viewtopic.php?f=6&t=98510 This...
  4. cozy35

    4000W Compact Mid-Drive Build

    This is my effort in creating an affordable, powerful mid drive to enable me to enjoy the wilderness sort of effortlessly. Criteria: Powerful Lightweight Quick Install Benefit of standard gearing on most bikes. Reliable I will be using the Alien Power Systems APS-6384-100KV Out-Runner. They...
  5. cozy35

    Alternative Bike Friction Drive on Rim

    This thread is really very interesting and right up my ally. I am working on the mechanics of a dual motor friction drive that will run off the rim brake surface in symmetrical fashion. They will be mounted to the seat stays on both sides.I have tested a basic design and it seems pretty smooth...
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