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Recent content by Snikerdoodlz

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    Golden Motors Magic Pie 5 Teardown - Swap Spoke Hole Flange for 16" or 20" Cast Rim

    I'm planning to build a 3-wheel electric skateboard (finished build thread coming later) using a Magic Pie 5 as the rear drive motor. I used the MP5 in a 26" ebike I built until I swapped it out for a lighter geared motor after my spokes snapped twice in two years. To use it with a skateboard...
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    Controller goes full speed past a certain throttle voltage

    I have a 48V Lyen 9 FET controller that I connected to a Bafang BPM2 hub motor. Currently, it has some unintended behavior. When I push the throttle past a certain point, the controller spins the motor all the way up to full speed, and does not stop spinning at full speed until I move the...
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    torque arm picture thread

    Laser cut from 304 stainless steel. My dropout has holes for a disc brake caliper and pannier, I used those to hold the torque arm. The torque arm is also extended backward to mount the pannier a bit further back because I carry a crate on top of it. A smaller piece of steel allows the weight of...
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    How to limit hub motor acceleration with phase current limit?

    I got a Lyen 9 FET controller for a hub motor build. One of my requirements was that I should limit the acceleration/ramp up speed of the motor so I'm not pushing my motor too hard on acceleration. My riding style is that I like to cruise at 20mph (up to 25mph if I have a tailwind) and pedal to...
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    Testing hub motor, jolts and sounds funny.

    Thank you! That was the problem. I connected the yellow, green, and blue wires to each other from the controller and motor, but I guess they mean different things on each. I switched one pair and it works now.
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    Testing hub motor, jolts and sounds funny.

    Video: https://dl3.pushbulletusercontent.com/eASgKhUdi9ypzO4SG6XwtLnkhMw5A4os/20201217_113402.mp4 I got a 48v Bafang BPM2 geared hub motor. I just wired it to my Lyen 9 fet controller to test it. When I push the throttle, it seems like it makes almost a grinding sound. It runs only for the time...
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