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  1. O

    Sine controller from Shanghai Leishun Industry Co., Ltd

    Hello, I'm planning to buy this sine controller (Shanghai Leishun Industry Co., Ltd): http://www.aliexpress.com/store/product/48V-500W-Brushless-DC-Sine-Wave-Controller-36V-500W-ebike-controller-48V-750W-ebike-controller-Regenerative/513166_32331382328.html Does anybody here have this one ...
  2. O

    Can I overvoltage this controller ?

    It is made for 36V, but I'd like to extend its input to max 60V. Maybe someone has a schematics of it ?
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    My 250W hub BLDC motor is very noisy at less then 10km/h

    I changed my Persino chinese controller for another one, older Persino. Now, motor is silent :-) but max speed is lowered from 28km/h to 22 km/h. Climbing power is good. Connecting 2 cables limiting speed gives a limit of 12 km/h, which is a rather ridiculous value :-( So the motor is OK, but...
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    My 250W hub BLDC motor is very noisy at less then 10km/h

    Perhaps this noise is caused by a relatively low PWM frequency issued by the controller. I think it is in the several kilohertz range where our ears are very sensitive. Lets place another question: Is there a 36V, 250...500W controller having PWM freq beyond 15...20 kHz ? Sinewave output is...
  5. O

    My 250W hub BLDC motor is very noisy at less then 10km/h

    <<<This for example it can be used without LCD as default <<<http://aliexpress.com/store/product/Electric-bike-sine-wave-controller-36V-250W-small-size-6-mosfet-controller-with-PAS-36v-controller/937734_2029677362.html?spm=0.0.0.0.KmkZ9L Did you try it by yourself ? Maybe someone else ?
  6. O

    My 250W hub BLDC motor is very noisy at less then 10km/h

    Are there any other sinewave controllers than S06S ? I don't want to use LCD, too much gadgets for me ...
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    My 250W hub BLDC motor is very noisy at less then 10km/h

    <<<< A sinewave controller does make a big difference. Try the S06S from BMSBattery. You need to buy a LCD to go with it and a wheel-speed sensor. >>>>> Can the S06S be used without LCD ? As a power steering I'd like to use only regular thumb throttle.
  8. O

    Indentifying connector pins in this DD motor

    I bought a Tranz-x motor containing a controller inside : but I do not have any descriptions of its pins. Is anybody here who can help me identify of these ?
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    My 250W hub BLDC motor is very noisy at less then 10km/h

    On the pic, there are 2 cables because the rest is not well shown. There are 3 power cables and 5 cables for halls and an extra one (white) that is not connected to anything. Maybe temperature sensor ? Here are the gears:
  10. O

    My 250W hub BLDC motor is very noisy at less then 10km/h

    I started disassembling my motor but now I'm stopped - not sure how to proceed. I removed gears plate and all retaining rings. Here are the pics of this motor as of now: How can I disassemble it more not destroying it ?
  11. O

    My 250W hub BLDC motor is very noisy at less then 10km/h

    So maybe I need to dissassemble the motor again and treat the windings with a transformer varnish ? When being dry it has some residual mechanical softness that may prevent the windings from fringing.
  12. O

    My 250W hub BLDC motor is very noisy at less then 10km/h

    Hello ! I electrified my 26 inch bike with a front 250W hub BLDC motor "TranzX" and a controller PSBL36V500W made by Persino from China. Speed, torque climbing is definitely OK, but motor (and even controller itself) is very noisy at speed less then 10km/h. At larger speed it becomes...
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