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  1. rollingreenhills

    ‘net-neutral load’ electric powered trailer

    I am fairly sure it would be easier to use a standard throttle with a long wire. . .but: I have just been reading about this new type of electrically assisted bike trailer, it looks fairly standard apart from the throttle being replaced by a sensor that pushes and pulls, and adjusts speed...
  2. rollingreenhills

    Surge in Voltage - DC to DC Boost Convertor

    I have a spare headway cell I am trying to use to power small LED lights. It is a 8amp high power cell, and it is behaving normally. I have connected this to a boost convertor module from ebay a...
  3. rollingreenhills

    Automatic Phase Wire Configuration

    Is there such as thing as a controller that automatically configures phase wire order? I have a controller where all of the phase wires and 3 of the hall sensor wires are the same colour. . . . Surely a manufacturer would not be this thoughtless if the configuration were not automatic? . . ...
  4. rollingreenhills

    Adjustable Voltage Controller

    When I was at school, there was a kid (rest his kind soul) with a disability scooter which had a "tortoise" button on the controls. When you pushed it the speed of the thing would drop, with a big increase in torque. Say you have 500W motor and run 48V through at 10 amps, would running it at...
  5. rollingreenhills

    Single Cell Balance Board on 16s

    Hi Just wondering, if you wanted to could you use a single cell balance board, on every headway cell in a pack, to prevent overcharging and then charge them all in series? http://www.ev-power.eu/Battery-Management/Cell-Balancing-Module-3-60V-1-7A.html Would this speed up charging for...
  6. rollingreenhills

    Headway 38120 LifePo4 Reliability

    Hello, The more I read about lifePo4 the more I seem to think what a hassle it is. I think I have finally assembled a pack that looks like it is in the process balancing but . . . Question: Will my headway pack (16s 48v 8ah) always take days to balance after use, and will I need to keep...
  7. rollingreenhills

    BMS or Controller Cut Out?

    Hi, I have just built a 48v 500w Bafang BPM (code 13) 20" Wheel Bike, with a ElifeBike Controller (19A) and a home made 16s headway (screw type) battery pack. I purchased the controller from a reputable retailer, and the cells I purchased secondhand from a local EV manufacturer, I tested all...
  8. rollingreenhills

    Limiting Amps to Controller

    Hello, A question. I have 24v SLA ( 2 x12 - 22ah) which I am am going to run a 48 volt BPM 500w from. I am using a 20A step up transformer, to get from 24 to 48 volts. The specs say the transformer will provide 500w of power to the controller, I expect the controller would take 750w atleast...
  9. rollingreenhills

    Step Up Transformer 24 to 48 volt to run motor

    I have googled the living whatsit out of this. . . Can you use a step up transformer in the following circumstance. 2 x 12v 22ah Panasonic SLA linked in serial to run this transformer: http://www.ebay.co.uk/itm/281755037627?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT Specs...
  10. rollingreenhills

    My Non Hub Motor Cargo Bike

    I am about to swap out the drive system on this cargo bike of mine which I was a bit disappointed with. This is my first ebike build, and I have learnt a lot, the biggest ones are that torque is very important, and that 24 volts is not great owing to high amps required to up power. Correct me...
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