Recent content by AviatorTrainman

Thank you, that was it. The first time I was pretty sure that I had accidentally touched a hall wire to B+ at some point, and I stand by that, but I just realized now that the issue this time was a faulty GND wire in the new-ish hall sensor harness. It made enough connection to provide +5 on the...

Hello all, I have been working for quite some time on a motorcycle conversion with a QS138H and a Votol EM150sp. I was able to ride once in December before the controller began behaving as though the hall sensors were not connected. It would make noise, and spin to a particular position and...

I guess it must be the phase short, since I have only run this motor for about 10 minutes total, and at low throttle settings, but I don’t know how it could have happened while the system was shut down. So now I need to replace the sensors. Is this a part I can buy off the shelf or do I need to...

Hey all, been following this thread for a while as I work towards an electric conversion of a Kawasaki G3. Controller is a votol em150sp and motor is a QS 3000 watt 138H mid drive. In any case, I had it running last night and it was a blast. I spent today installing a key switch, which...

Your model looks significantly more accurate than mine, so I won’t bother to upload mine unless people want me to, but some (non-mounting) features are just flat out wrong on mine. See the picture attached to see what I mean here: the center line of the 7mm thick sprocket sits 16.5 millimetres...

I’ve made a rough cad model of the motor in fusion if you’d like me to export it, or I could post a screenshot of the dimensioned end sketch. I don’t remember where I found the image i worked from, but it had enough dimensions that I was able to calibrate and work from it. I was able to 3d print...

Seconded on the seawater protection - that stuff will kill all your electronics easily if you aren’t careful. Seal it, test the seal, take it out for a spin, then test the seal again. Maybe even install some sort of drain plug to use regularly if you’re confident you can do that without...

Usually, they cannot be swapped because the front and rear wheels have different width axles on most bikes, although I don’t know that bike specifically. Although you didn’t ask, my opinion is that you’re better off leaving it rear wheel drive anyway, due to better traction and easier handling.

Are you sure you’d be able to make it small enough to fit in even 2 of those spots? If you can, please let me know, because I’m struggling with figuring out where to fit twice that on a small motorcycle. If it does fit, I’d go for 4 and/or 2, but 2 is less ideal when you factor in how far back...

If you have a setup where everything works properly in reverse, (which it seems you have when the learning wires are connected), all you should have to do is reverse 2 of the phase wires. Those are the thicker wires going to the motor, and there should be 3 of them. Swap 2 of them with each...

Hey, so I'm trying to figure out controllers. I'm having trouble finding the Votol 200 for sale anywhere, and the aliexpress QS motor comes with the votol 150sp, if any. So for 100 USD over the price of the motor with a votol 150, I can get the motor with a sabvoton 72200. Is this controller...

Where might I find a better deal? I'm not seeing much that has a comparable $/Wh ratio.

I was trolling ebay looking for some possible cells for my electric motorcycle conversion, and found this: https://www.ebay.com/itm/84-SPIM08HP-3-7V-8AH-LITHIUM-ION-BATTERIES-25C-200A-SUPER-CELLS-CUSTOM/202814938579?hash=item2f38b65dd3:g:MuYAAOSwDkVaakSh. Can I trust these cells? The description...

Okay, good to know. Also, does anybody know the dimensions of the version with the new case? I mostly would like to know the bolt size and separation. Also, is the new one just the old version in a plastic case, or is it actually a different motor in some way?

Those of you who have ordered this motor, does it come with a controller? The product listing at http://www.cnqsmotor.com/en/article_read/QSMOTOR%203000W%20138%2070H%20electric%20bike%20mid%20dirve%20motor/873.html has a picture of a votol 100 but does not mention it in the description. Is this...