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https://drive.google.com/file/d/1Us2dF1W7GK0P5jPkpJ-8rqDemnIWu985/view?usp=drivesdk

Image wont load but basically the BMS is a huge board on top of the whole pack

I was reading that the BMS can also be bypassed for discharge. Is this a reasonably safe route, as long as the controller has a low voltage cutoff?

Thanks. I will try the 13a controller first. IveI had other issues with this crappy controller so it's possibly just tripping something. If not I happen to have just bought a fantastic gas soldering iron kit from Aldi lol

On the original controller there are 2 thick leads and 3 thinner ones. The battery fires up a Chinese controller with just the 2 thick ones but we have this problem under high current. I've just read a spec sheet on the phlyion battery and it states 19a max so the controller should be working...

The controller I've ordered to finish it is 13a. My partner's is also 13a. I will test that hopefully it works, if not I need to stop the BMS cutting out, what a headache

Have tested the Chinese battery and can confirm that actually is the culprit. The good news is the suntour motor is very fast. The bad news is how the hell do I disable/modify the BMS?

I have a Chinese battery will test that now

That said it spins fast unloaded so doubt it

Yes still suntour wheel maybe they have thought of this hack haha

Also the battery doesn't shut off which it normally would if BMS was involved

15a

It seems to reach a certain rpm and just stops with a slight judder. Cant find any obvious connection flaws.

Found out that with the limiter loop plugged in it doesn't cut out if that helps narrow it down

It's just a cheapo violamart one I had lying around, has the basic throttle with battery indicator. This is not the final one im going to use just using it for tests

I'm in the process of changing the controller on my Vulcan e spec to hopefully derestrict it. When testing the throttle spins the wheel fine off the floor but when riding it keeps stopping and I cant get it up to speed. Bad connection?

So imI going ahead with this. Connectors and tools are arriving, I have a Pas sensor ready, waiting on a standard crankset, 36v 350w controller and a thumb throttle. If all goes to plan the total cost is just over £70. Will post results, the controller is from China so could be a while yet. I'm...

Check all connections. Something is either tripping or loose. I had this issue and it turned out the fuse in the battery kept coming loose and sparking. Eventually it melted the connection off