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  1. badboy1999

    Biro (electric moped) repair project

    To star off, this is a Biro: A friend of mine acquired one of these with a broken controller for very cheap. Now the plan is to repair it. It has two engines, in the rear wheels, and a removable 48V battery. Peak power is supposed to be 4000w. I'm thinking of two Kelly controllers for 48v and...
  2. badboy1999

    Figuring hall sensor pinout based on these numbers

    I've got a secondhand wheel with Tranz-X motor (250w 24v it says) but I'm trying to figure out the hall sensor pinout. The motor looks exactly like this BTW from the inside: Which maybe isn't really relevant since I'm just trying to figure out the Hall pinout which my Kelly controller needs. I...
  3. badboy1999

    Finding a good controller

    Because the biking computer in my bike store pedelec failed, I'm now running my bike with a $15 ebay 36v controller. It works allright, but the throttle is not throttle like in a car (where you adjust the amount of air going to the engine) but sets a target speed, so for a nice tailwind-like...
  4. badboy1999

    Has anyone reverse engineerd those $10 BMSes from eBay?

    I'm referring to the kind of bms that's used in this tutorial: http://www.ebikeschool.com/how-to-build-a-diy-electric-bicycle-lithium-battery-from-18650-cells/ Mine just arrived but it is seemingly DOA, the seller is shipping me a new one but I want one now :( I'm guessing there's some kind of...
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