ignorant newbie requires advice on so6s wiring

[keri]

Hello, i wonder if anyone can help, i have bought a kit from bmsbattery in china and it has arrived without any instructions. The kit is a Q100 350w 36v front wheel kit with led display and 10a bottle battery and So6s controller integrated into the battery carrier, my idea is to initially set the bike up with thumb throttle only and add the pas and brake cutouts in a week or two. So far i've charged the battery, switched my tyre, fitted my new wheel and thought i'd try a dry run before fixing cables etc. When opening up the controller i quickly found the socket for the led display and thumb throttle plus the three 'main' motor wires but i can't see where to connect the hall? sensor wires, the kit came with a blank white six wire connector which i could push the hall wires into but there doesn't appear to be a female version to receive it? Online pictures appear to have more white sockets on the controller so i'm starting to doubt if i've been sent the correct controller, i've messaged bmsbattery but was wondering if anyone had come across this before? Although I did do some research before purchasing, I'm afraid i'm pretty clueless as to the workings of these kits and was relying on it having instructions, so go easy on me with the technical jargon, but any help appreciated, thanks

 

[Alan Quay]

What model is the controller? Many of them will run sensorless.

Edit: just noticed that this is a S06S controller, which is the sensorless version. I've never tried one, but since BMS say its compatible with the Q100 and sell it as a kit, then I would assume this to be the case.

I would just try it.

 

[keri]

Thanks for your prompt response, i've just checked the bms website and i believe i may have an SO6P controller not an SO6S, am I ok to run this with the hall sensor wires unconnected? Is it best to insert them into the supplied plug to seperate and insulate them?

 

[Deleted member 4366]

You can try it, but I've never had success with a Q100 sensorless, though I believe other people had success with the lower speed ones. Let us know if it works.

I tried that same controller with a Q100C (high speed), which worked OK at low RPM, but it lost sync at high RPM. I then tried it with Q75, which was the opposite. It ran fine at high RPM, but when it got down to below 10 mph at maximum power, it suddenly started gtinding and vibrating, which stopped if I reduced the power down to say level 3. The Q75 is a sensorless motor.

 

[keri]

Thanks for your assistance, armed with a bit more knowledge and being sceptical of Chinese wiring, I've managed to get the basic kit assembled tonight on my Trek hybrid and briefly run up, all seems good so far but I guess a road test tomorrow will be the real acid test. Does anyone have any tips for a first timer with this type of hub drive kit, ie common sense would say, start off pedalling on the flat and use low power/speed when I've got some space around me and gradually increase speed and gradients! I bought the kit to assist me tackling a long medium to steep hill on my commute how would you go about tackling this first time out, ie try to maintain a highish speed with a medium power setting?? I heard the hub motors don't like working hard at very low speed

 

[Deleted member 4366]

Just ride it. The problem with the speed is when you go so slow that thevmotor is nearly stopping. Normal riding will be OK. The problem you need to look out for is juddering or fierce vibration, which is the controllervlosing sync, which will heat things up very quickly.