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  1. E

    Anybody try the hub motor kit from Yose Power?

    Seems like a pretty solid kit. For $500 you get a hub motor kit and battery with integrated controller. https://yosepowershop.com/collections/e-bike-kit/products/e-bike-conversion-kit-48v-500w-26-rear-motor-fit-for-freewheel-with-48v13ah-down-tube-lithium-ion-battery-and-charger They even send...
  2. E

    Looking for best value DD motor kit on ali express

    I am hoping to put together a couple e-assist handcycles for a project I am working on with a non-profit in Ukraine. I recently built a couple handcycles using motors from Grin Tech, which are great and have helped me get to places I never thought I could go, but they are too expensive to be...
  3. E

    Coaster brake ebrake cutoff sensor

    I am trying to design an e-assist handcycle for quadriplegics who do not have enough grip strength to squeeze a brake lever. We generally use a coaster brake instead. Are there any ebrake sensors that work with a coaster brake? In other words, can detect if the user pedaled backwards and intends...
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    How to get instant power with torque sensor and ca3?

    I have an erider torque sensor, https://ebikes.ca/erider68-4b.html, and a Cycle Analyst v3 and cannot figure out how to set it up to apply power to the motor as soon as I apply pressure to the pedals. My main goal is to have the system help me start pedaling. This is especially useful when I...
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    Power randomly spikes during ride

    I have a Crystalyte H3525 Hub motor with a 25A Grinfineon controller and a 3.1 Cyckle Analyst installed on my handcycle with a 48V battery. I have a PAS and a digital aux input, which I usually set to 200W-300W. I just finished building the bike two weeks ago. On my last ride I noticed a random...
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    Cassette shaking when motor spinning normal?

    I just installed a Crystalyte hub motor in a prelaced wheel from Grin tech on my handcycle. When I let the motor spin the wheel while the wheel is in the air and I am off the bike, the cassette oscillates side to side. It is subtle, but you can see it in this video https://youtu.be/48pe9ilTm4E...
  7. E

    Why are geared motors worse than direct drive for climbing hills?

    I was playing around with the motor simulator and it seems geared motors overheat while direct drive motors have a longer range and do not overheat. Here is a comparison of the G310 vs RH212...
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    Bafang G310 vs Bafang BFSWX02. What is the difference?

    I really like the Bafang G310 motor available through Grin Tech, https://www.youtube.com/watch?v=8sGFoJUO-BM I particularly like how quiet it is. I found a local shop that has a 500W Bafang, BFSWX02, kit. I think it is very similar to this kit on amazon...
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    Will a direct drive motor cap my downhill speed?

    I was playing around with the motor simulator on ebike.ca and it seems if I am going down a 10% grade my speed maxes out at 25 MPH and I feed 1KW back into the battery...
  10. E

    RH212 vs H3525 vs GMAC for road handcycle

    I have a Top End Force 3 handcycle that I want to put a hub motor on. My hope is this will bring me up to the level of able bodied cyclists and maybe give me a chance to smoke my buddies on some uphill ascents again. I want to be able to ride the handcycle similar to how I rode my road bike...
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