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  1. V

    New Tongsheng mid drive kit won't power up

    Set the meter to 200v DC (11 o'clock position). Put the probes on the two outer battery contacts. Note the voltage. Put the battery in its receiver and measure again on the connectors on the red and black wires. Note the voltage. Show a picture of your charge socket on the battery so we know...
  2. V

    controller and battery

    The RMP is an important characteristic. It has a profound effect on the current. A fast motor will draw higher current for more of the time and wouldn't be suitable for that battery and controller unless the controller gives the option to turn the current down.
  3. V

    Electric Motor Problem

    I doubt anybody local would be able to help. Your best hope is probably these people, otherwise you have to get a replacement motor from Germany an fit it yourself, for about £500. https://www.performancelinebearings.com/product/bosch-motor-service-repair-kit-bdu2xx/ German supplier...
  4. V

    pcm wiring help

    Neal's right. I got the designations right but the blue is the cell-pack negative and the medium black is the charge negative.
  5. V

    Brexit, for once some facts.

    That's pathetic. Try again.
  6. V

    pcm wiring help

    Thick blue (CH-) is charge socket Negative. the black next to it (B-) is the output negative to the terminal. The other thick black (DS-) goes to the cell-pack negative. B0 goes to the same point, B1 to the top of cell 1, B2 top cell2, etc. The red positive from the cell-pack goes direct to the...
  7. V

    controller and battery

    What motor do you have? What's its maximum RPM?
  8. V

    A legal question or two....

    Yes I did charge while running. No, I didn't have an encounter with the police. I doubt that the police would be the slightest bit interested. It's a bicycle towing a trailer. The last thing they'd think of was that there was a running generator in there. They wouldn't be able to hear it from a...
  9. V

    What to plug in first when charging the battery

    Firstly, if you have the trapezium shaped battery, the connector to it's receiver is a weak point. So don't take the battery off unless you have to. I can't remember if the battery has a switch on it, but if it does always switch off before taking the battery off or putting it on. Regarding...
  10. V

    Help! Carrera Vengeance e type!!!

    Yes, it's already been done a couple of times. You need a controller, brake switches, motor cable, PAS, LCD and throttle n(optional). I recommend a KT sine wave controller from Topbikekit
  11. V

    A legal question or two....

    After I made my trailer, I soon figured out that it would be lighter and more convenient to carry one or two spare batteries with a charger. Batteries are about £200, the same price as a cheap generator. For my project, I already had the generator.
  12. V

    Brexit, for once some facts.

    Go and see them for yourself, then come back and tell everybody whether you think they're genuine. Don't forget that Hunter Biden has never denied any of it. The only people that have are people like you and Biden's support troops in the media. It's a fact that he's presently under...
  13. V

    Brexit, for once some facts.

    I would show you, but I'd be banned from the forum and arrested for possession of child porn. Go to 4chan and see it for yourself.
  14. V

    A legal question or two....

    That's not what's being suggested. The idea is to use a spare battery, so there is no electrical connection between the bike and the trailer.
  15. V

    Throttle with ignition key?

    Your present throttle must have 4 wires: 5v, ground, throttle signal, all for the throttle operation; and 48v for the LED panel, which will take a spur of the throttle ground. A throttle with voltage display and a switch will have an extra two wires for the switch. There are three ways to use...
  16. V

    wisper 905 torque

    The logical explanation is that it's set to 24v rather than 36v. Take it back to the shop if it's new.
  17. V

    Help/advice requested

    I would bet that all it needs is a couple of new batteries that cost around £70 and is a pretty easy fix. You'd have to open the case to see what's inside, assuming that you have it. If you don't have the case, you're out unless you're good at DIY.
  18. V

    Replacement battery charger for Vicking Harrier ebike

    Why do you need a new charger?
  19. V

    A legal question or two....

    I think that's an extreme interpretation of the law. It's energy conversion, not manufacturing. You manufacture tangible products. You generate electricity. It's no different from converting the chemicals in your battery into electricity. The start is a chemical substance the end is a different...
  20. V

    Brexit, for once some facts.

    This is the same database that showed that Eric swalwell was shagging a Chinese spy. https://www.dailymail.co.uk/news/article-9046783/Leaked-files-expose-mass-infiltration-UK-firms-Chinese-Communist-Party.html