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  1. H

    3 phase short, any potential issues?

    I was playing around with a Q75 motor while lacing it up. I shorted the 3 motor phases (with a razor blade), and then forcefully turned the wheel. It was cool to feel how much mechanical resistance there was. However, I then turned the wheel harder/faster, and suddenly felt some "slippping"...
  2. H

    250W PAS build recommendation

    Looking to build a 26" wheel, 250W PAS ebike for my girlfriend rim brake mountain bike. My rides are usually 1-2 hours at 17-20mph on paved/gravel/dirt roads. She can ride at about 10-12mph. This is just a bit too slow for me to enjoy. I tried my ebike with regen drag of ~100W, and that...
  3. H

    How hot do you let a downtube battery get? Is 45-50°C too hot for safety?

    I have a 10s7p Panasona GA battery pack from Ebikes.ca It was stated as 40A continuous/max BMS. The BMS allows for up to 150A though... (I change the bms shunt to test this, did not actually run 150A). During my 30 minute commute, I use it at 45A for about 1/5 of the time to keep up with...
  4. H

    2kW battery suggestion

    I'm looking for suggestions on batteries. I currently have a 10s7p Panasonic NCR18650GA, 40A rated, downtube battery (from ebikes.ca) My commute is 10 to 14 miles one-way. (25min - 40min) Elevation: Flat (less than 100m = 300ft of climbing either way) Wants and current limitations: 1)...
  5. H

    BMS limitation

    I have a Hailong 36V 23Ah pack from Grin, that came with a 40A BMS. This is my first battery with a bms. https://ebikes.ca/b3623-lim-dt.html I wanted to see if I could push it higher than 40A for "short periods", and hopefully modify the most limiting components. What parts should I check for...
  6. H

    One front hub motor, tadpole trike

    Would having only one front motor on a RWD tadpole trike ride normally? There would only be a little bit of power because this would be a 100% HPV vehicle. My university team is making a tadpole trike for competition. One of the events is a obstacle/endurance course. There is 1 stop sign, 1...
  7. H

    regen, high erpm controller for max 30A

    I was planning on hooking up a grinfineon controller to a 340kv 14pole 333W outrunner from hobbyking. Add a pot to control variable regen. This would be for a pedal generator module, so about 100-500W, to charge a supercapacitor bank. The problem I just realized is that the controller is only...
  8. H

    Controller max current problem

    I have a CA3 and 35A 24-48V grinfineon controller, recently put onto my first e-bike. The last few days, I noticed that the max current is only about 30A. I don't remember if the max current before was higher at 35A or not. I've tried changing the throttle_out, changing the max current limit...
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