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  1. martinmertik

    Sur-Ron Battery upgrade

    We are not selling ASI controller anymore We will still support our existing customers. In case you need any support please contact us at info@bull-bikes.si In the meantime we have expanded our production of batteries for Sur Ron bikes and also all other ebikes and motorcycles. For inquiry...
  2. martinmertik

    High AMP battery build

    Hi, I’m building high power Honda CRF 250R dirtbike. I will use Zero 75-7 motor and 20s 27p Sony VTC6 battery pack. I would like pull 500+ amps from the battery with minimal voltage sag and overheating. So my plan is to use 0.3mm thick nickel sheet. One nickel piece for whole 27 cells inside...
  3. martinmertik

    Freeride Ebike QS205 22s10p sabvoton 72150 unlocked

    Hi ES members! My name is Martin and I'm from Slovenia and this is my e-bike. Parts: Frame: Commencal Furious 2008 Brakes: Juicy disc brakes Front/rear suspension: rockshox/fox Tires: front 22" and rear 18" Sava MC2 tires Motor: QS205 4T Freewheel: 18tooth Controller: subvoton 72150 UNLOCKED...
  4. martinmertik

    500W brushed motor and controller MOD

    Hello guys, this is my first post on this forum. So... I have an old 500W brushed electric motor that I removed from my sisters electric scooter. and it's very similar to MY1020 motor that I found online. It also came with small chinese controller on which it was written 24V/36V/48V. So I...
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