Pumpalump

Hi, From memory when I had to replace a control board I it was is sealed with a layer of resin so not sure how soldering the wires in would be possible, I could try grinding the resin down with a dremell I guess until I get to the connections ?

Its ok as I only ride mine of road on private land however I see lots of Delveroo bikes bombing around when im in my car at speeds well over the 15mph limit where I live and the riders dont even touch the pedals but nobody is policing them. No lights, go through red lights etc. One rule for one................

Thanks for the response, think I understand now. I think the easiest option would be to hot wire the throttle direct into the control circuit board. From memory I think I would only need to remove one cover from the motor.

Hi all, Totally confused about adding a thumb throttle to my bike. I have seen various comment about this, I have a TSDZ2 motor, the cable coming out of the motor ie controller has six pins, I have a VLCD5 display, 48V Battery and 500w motor. Question: Will a thumb throttle work by just plugging it into the middle socket at the back of the display? If not what do I need to do to make it work. Thanks in advance. Phil

Hi folks, Hope someone can assist. I'm having a bit of a problem on a Tongsheng conversion I did for a friend. After riding for approx 325 miles he noticed the speed wasn't showing on the display and the battery level only shows one bar although the battery itself was showing three lights on the push button at the time? Apparently it has done the same thing while on another ride he went on but it sorted its self out. The assist levels are still working and the motor still gives power as normal. I've checked the display inside for loose wires(none found), shorted the positive /negative motor terminals, checked all the connections and even tried my fully charged battery on his bike but still has the same issues. I've also noticed the system isn't shutting down automatically if left for a time without riding. Any ideas?

Hi folks, Hope someone can assist. I'm having a bit of a problem on a Tongsheng conversion I did for a friend. After riding for approx 325 miles he noticed the speed wasn't showing on the display and the battery level only shows one bar although the battery itself was showing three lights on the push button at the time? Apparently it has done the same thing while on another ride he went on but it sorted its self out. The assist levels are still working and the motor still gives power as normal. I've checked the display inside for loose wires(none found), shorted the positive /negative motor terminals, checked all the connections and even tried my fully charged battery on his bike but still has the same issues. I've also noticed the system isn't shutting down automatically if left for a time. Any ideas?

Hi , see my last post for update. Cheers.

Hi all, As usual I forgot to update you all, apologies. I was a little apprehensive to say the least on my decision to replace the motor controller rather than the torque sensor , just an educated guess really. Ok then a strip down of the motor , original controller out and brand new replacement motor controller installed, motor rebuilt and re-fitted (no bits and bobs left over which is always a good sign) power on and the display on, so far so good.no loud pops or blinding flashes. Level assist 1 selected , foot on pedal , push down , bike moves forward and continues to move forward as I keep peddling , select level 2, yep still all seems good, skip level 3 and straight to level 4. BONZI the bloody thing is working. Long test ride next over 20 miles of varied surfaces and the motor performed impeccably I am pleased to say. My friend has now be riding the bike for quite a few weeks now and is thrilled to bits with it agin. Anyone in the market for an old US controller? Would look nice as an exhibition unit.

Makes sense as this battery does have an on and off switch that actually works unlike some others I have used.

Well I dragged myself into the garage at 11.15pm , removed the battery , disconnected the wires and then proceeded to short the motor cables, result not a squib , nothing at all , Zilch spark. I just hope the voltage was so small it didn't have enough umph to create a spark but has reset the torque sensor. I couldn't swap the battery over as the cradles are different to mine so have decided to swap the cradles over as well just to rule any battery issues out. My guy feeling is it is the motor controller that is shagged (to put it mildly). The saga continues.

Not convinced but I'll give it a go !!! Wish me luck.

Thanks for the info, I'll give it a go and report back soon but before I do you mean just connect the black and red together? Isn't this going to pop the capacitor ?

This is happening after only 100 yards . The motor is flat cold. My own bike has exactly the same kit and works without issues even when the motor gets a little hot.

Yes but the power delivery should be constant at whatever level of assist you are using , this motor is dropping down.

The issue is even apparent on the flat. The battery pins seem ok but I am going to swap out the battery with another from my bike to see if makes any difference. If the symptoms persists I will check all connections again , if that doesn't work then I guess the only thing it can be is the onboard motor controller or torque sensors ? One thing to note , when setting off from a standstill the motor is giving full power but then this defiantly reduces as you peddle on and there seems to be a reluctance in the motor that you have to peddle against.