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  1. E

    How to enable on/off switch of phaserunner v3?

    I have peeled back the throttle cable fromt he phaserunner v3. There I found the white and yellow wires for the on/off switch. However, nothing happens when I connect or disconnect them. My multimeter also doesn't show the voltage across them. Is there a way to enable these cables to work? I...
  2. E

    What is this weird sound from the GMAC hub motor? (video)

    PQGjnrCfc_E I have a couple of other videos on my channel showing the same sound, if you didn't think this video was good enough. What do you think this sound could be? I can't find anything in the gears that could make this sound. And there is no sound when I turn it slowly by hand (the...
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    Cycle Analyst shows completely wrong temp and powers motor without throttle input (partly solved)

    When I power on my ebike it starts accelerating to top speed without any throttle input. If I apply throttle, it only accelerates even quicker. It also shows about 240 degrees celcius even if the motor is just being started from cold. And the temp voltage is nudging 5V while it is running. If...
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    Stores that sell Mac hub motor 8t

    Are there any stores that still sell the Mac 8t? Can't seem to find any. Luna doesn't ship to Europe and Ebikes.ca only has their more expensive gmac with special connectors.
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    What wheels to use on Schaeffler BioHybrid replica?

    Hi, I am thinking of building my own electric velomobile similar to the Schaeffler Bio-Hybrid. Ideally I would have liked to buy the Biohybrid, but the price is going to be between $10000 and $18000 USD. That is probably okay for someone that works in a high paying job, has worked for many years...
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    Quietest motor for making a mid-drive

    I was very inspired by the Vector Vortex that uses a large direct drive hub motor as a mid-drive. It is virtually silent, doesn't overheat, reliable, little unsprung weight and can climb almost any mountain. The only downside is that it is quite large and takes up precious space. I would like...
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    Exceeding max continuous current rating from em3ev battery

    Hi, I have bought a "50V 25.7Ah High-Energy Pack With 60A Smart BMS (14S9P-PF)" battery from Em3ev. Very happy so far. But I see on their webpage that it is only rated for 40 amps continuous draw and 60 max. This seems quite low. What would happen if I drew 60 amps continuous (occasionally 5-10...
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    Limit speed of direct drive motor

    Hi, is there a way to add a hidden speed limit (not volt or amps, just speed) to an ebike with a direct drive hub motor and a cycle analyst 3? I am building a bike for my brother and I don't want him driving along at 60kmh on the flats. Too dangerous. 40 would be much better. The speed limit of...
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    8 speed cassette on mac hub motor?

    Hi, will an 8 speed cassette fit in a 135mm dropout mac hub motor (cassette version)? Or is it only 7 speed?
  10. E

    2kw DD with compatible controller?

    Hi, I have recently purchased a 50/(52v) 25Ah battery from EM3EV and would like to find a matching direct drive hub motor and controller. I have been looking around on aliexpress, but it seems like a jungle and it is hard to know what controller will work. The battery is rated at 40 Amp...
  11. E

    Need a motor setup that can do this:

    What motor would be able to accomplish this with a "decent" efficiency? : Ride continuously at 45kmh on the flats. Ride up a 10km climb with an average gradient of 7% and sections of 15%, at an average speed of 30kmh and a minimum speed for the steepest parts of 20kmh. I have been looking at...
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