Promblems with BMS rear rack battery

vfr400

Esteemed Pedelecer
Jun 12, 2011
9,822
3,993
Basildon
The guy hasn't got a Scooby vfr he's got no chance of getting the kit working, he's in way over his head.
As long as they're willing to learn, I'm happy to pass on my wisdom. Its the ones that already know the answers that make me switch off.
 
  • Agree
Reactions: Nealh

ldc

Pedelecer
Jun 2, 2020
58
4
The battery might be switching on. How would you know it is or isn't. We always check that with a meter, which is essential equipment even if you buy a plug-and-play kit.

These are the things you're going to need to complete the installation:

Digital multimeter
60w soldering iron
40/60 tin lead solder (not the free stuff you get in soldering kits)
Assortment of heatshrink tube.

The 500w BPM motor has immense torque, so it's axle can easily twist itself out of the forks. Correct installation is critical. You'll probably have to file your dropouts to get it in. I always file the drop-outs deeper as well to re-centralise the axle. I think that at 30amps, even with double torque arms, theres a strong possibility that it'll pop your drop-outs. I would only fit one with that much current in steel forks.

Which forks do you have.
I would assume the rear light would switch on which is connected to the battery or the status lights at the front under the on/off switch, I did file the dropouts to get the wheel to fit and it fits perfectly. I could easily solder the controller wires and it doesnt work, they can then dispute I did something wrong in the soldering process. I appreciate all your help and feedback, but I will not be going ahead with this kit and will just buy an ebike, which in hindsight I should of done in the first place, but with the lockdown, there was no stock anywhere. Like ive said numerous times if the i was aware ie the website said all this, no way would I have bought the kit
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
20,917
8,533
61
West Sx RH
It was you who recommended I bought the kit for one.
I/we recommend a lot of stuff, it's up to the individual to assess whether they have the know how to upgrade and fit the items.
One would have though that anyone looking at these kit/part vendors would notice that additional skills may be required to fit them.
They can be plug and play but only if the correct items are purchased.