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  1. S

    Yescomusa hub motor bearing size

    Hello all, I have a 48v 1000w hubmotor form yescomusa with approximately 5500miles on it. The motor still works great however Im getting a "clunking" noise about 5 miles into my comute. I suspect it's either the freewheel or bearings leaning the bike to make turns amplifies the noise...
  2. S

    Voltage drop with acceleration

    Hello, I'm having some troubles with my winter project, I got my hands on really cheep unused 18650s. I have tested every single cell with a venom duo at 1amp discharge all seemed fine. Each individual cell is around 2000mah with the exception of a few higher ones(2500-3300). I built 2 6s...
  3. S

    DC to DC Boost converter for lipo charging

    Would it be possible to create a 12s lipo charger using a 24 volt power supply and a boost converter? I seen converters on Amazon that claim to be 1500w for only 30$ and I already have two identical 12v 16amp power supplys ( from old Xbox 360s) that I have converted and seem to work fine. I...
  4. S

    Daymak/yuyang 30amp controller Bluetooth problem

    Ok so IV had this problem for just about a year now when useing my yuyang king controller bought from Luna cycles it will not let me into nor change the settings, IV tryed 12s and 18s and I can't seem to fix the problem. The temp/amp/voltage/mph are still functioning however. When I plug a...
  5. S

    Adding BMS to 12s lipo pack (2 6s)

    Ok so I have been charging 4 6s 16ah 10c lipos with a 80watt RC 6s charger in parallel. That's a total of 6s 62ah while charging with a parallel board. I would absolutely love to somehow wire up the pack with a BMS so that I could plug the pack in without disassembling every single time. I run...
  6. S

    Em3 infineon and yescom hubmotor

    I have a SENSORLESS controller 6fet from em3 and iv been switching the 3 phase wires around all day and can't seem to find a smooth forward I'm sure most of you will laugh at me but I just can't seem to find it the motor is a yescom 48v 500w I know you have to have a rolling start the back wheel...
  7. S

    6 fet controller with hub drive more efficient?

    I just ordered a 6 FET IRFB4110 with a half throttle/3speed switch I want something that is efficient as possible I thought this combo would be the one with a (48v) 500w hub motor. Im I right the less FETs the more efficient it would be? I would still like same or similar speed possibly with...
  8. S

    RC sensorless 3s ESC with hub motor

    Hello, I was wondering if a RC esc castle creations sidewinder 3 would work on a 48v hub motor with decent speed seeing as it's such a lower voltage i also have castle link just curious if it would be practical
  9. S

    Electric heated clothing

    IV been looking up heated clothing for a while seeing as it's getting cold and I don't want to stop riding. So I've been seeing people essentially short out a battery with vary long wires and some math so my question is when using lipos and useing this method is it safe? Not only safe but is the...
  10. S

    500w Vs 1000 watt DD hub motor

    What's up every one. Is a 500w motor the same as a 1000w when it comes to Chinese hub motors or is there an actual difference meaning if I used a 40amp controller for both motors at 50 volts would there be any advantage to either motor.
  11. S

    Looking for controller recommendations

    I currently have a yuyang controller with a yescom rear hub motor running 3 6s 16ah in series I would like to get a new controller I would like it to be programable and I don't want to have to figure out the phase/ hall combo so if anyone could point me in the right direction that would be...
  12. S

    Yuyang king 40amp controller

    Is anyone familiar with this particular controller? I'm running two 6s lipo battery's in series for 12s 16ah. The controller works fine and is charged up and I get a blinking battery on the app with no battery%. The controller still works fine however it won't let me in the controller settings
  13. S

    Regen breaking

    Is regen breaking the same thing as EBS I'm only asking this question because if breaking with my hub motor consumes battery life id rather not use it.
  14. S

    Ebike excessive Heat hub motor

    Hello every one so I have a 36v 500w ebike and a yuyang controller running on 12 s the amp draw from battery to controller is adjustable full throttle the bike is pulling 19amps with controller in the lowest possible settings...the hub motor get super hot I can't touch it for more than 3...
  15. S

    Yescom 36v 500w hub kit with 12s lipo no throttle response

    Hello all I ordered a yescomusa 36v 500w hub kit I have 2 6s lipos in series for 12s 16ah battery I wired everything up to correct color and connector. The bike powers on but I get no throttle response I tested the throttle to make sure it's not that I disconnected the break levers and still...
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