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  1. harrys

    Torque spec ; 12x10 axles

    I've always done it by feel with a 17mm or 18 mm wrench about 10 inch long. The other day I found my 3/8" clicker torque wrench, so I decided to torque the nuts on a 500W Bafang in a steel fork. What's a good number for a 500W motor? I'm using 40nm here. Seems kind of high. My other bikes...
  2. harrys

    Brainpower 866C-6 controller

    Simply put. learn mode is flakey. It almost seemed like the connectors were intermittent. Power up and nothing happens. AFter a few tries, it always spins backward. Then I break the connection, make it again, and it spins forward, but so slow, like 1-2 rpm. Sometimes, if I let it spin, it will...
  3. harrys

    Motors jerks at 14 mph with sine wave controllers

    I tried this with two different motors. Both jerk around 15 mph under throttle, the speed drops to 13. From there, it will accelerate again and not do another further jerking unless I stop it and restart. It seems to be associated with both my KT 20A and 25A sine wave controllers. It doesn't...
  4. harrys


    We own three 20" bikes with the Q100H 260 rpm motors from BMS battery, All powered with 20A KT 6-FET controllers (two are sinewave), I built a fourth one this year, using an AKM100 from topbikekit..I pulled out an old BMS Battery P06 17A square wave controller to run it, but it would stall on...
  5. harrys

    Error 06 on KT-controller

    PSWpower 20A sinewave model. I've had an occasional Error 06 when powering it up in the morning. Shaking the connector bundle on the controller, and wiggling the 9 pin Julet connector to the motor always cleared it. Last night, I happened to look down and see the controller registering over...
  6. harrys

    KT LCD3:L1-L3 parameters?

    Not that I want to change them, but I got there accidentally by pressing up/down together for two seconds at the C14 parameter, thinking that would exit the C menu. There are three L1,L2, L3. I got out of there by powering down the battery. I don't think I changed them, Hope not anyway. As I...
  7. harrys

    PSWpower 20A Sine Wave Controller

    I am running a newly purchased unit with a geared no name (well they're all no name) motor where I know nothing about its gearing or the number of magnets.Hence P1 setting is guesswork. What I've noticed is that the speed is accurate when coasting. Under acceleration, the display jumps between...
  8. harrys

    SW900 LCD

    You UK guys might know more about this display. I have used KT controllers and know how to wire in a speed sensor. The controller that came with the SW900 doesn't have a separate connector for speedometer. It doesn't show the speed when coasting. Might be a setup issue, but I think it needs a...
  9. harrys

    TSD-Z2 optioning question

    PSWpower lists TS-QD197 and TS-WD215 as options under the "Right" category. What are they, please? Am again considering the 36V 350W kit for a light weight bike. I would get a throttle because I am used to having them, although my riding style is pedal assist.
  10. harrys

    Phoebe 36V/48V Controller with learning wire

    I recently bought this controller off aliexpress. I was attracted by the price, $45 USD, and that the different models supported 36V and 48V with an LCD. I bought their 48V 350W model. Shipped to the USA in about 10 days...