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  1. M

    MEBO battery charger 48V 5A - can I adjust voltage?

    Hi, I opened it up and cannot see potentiometers anywhere. Same 5A charger is available 54.6V (mine), 58v, 36V etc. I thought that I just open it up and can make little adjustments - I have 12S lipo but charger is for 13S (my future battery) Any idea is it adjustable charger? Some pics here...
  2. M

    KHS Crest with modified GNG v1.1 mid-drive

    Hi, I have this bike equipped with GNG mid drive almost 2 years already and better late than never...I am making build log here :) Maybe others can get ideas from my modifications and vice-versa. Battery: 44V 10Ah LIPO (4pc of 5Ah 6S Zippy LIPOs, in 12s2p configuration) stats so far (ebike...
  3. M

    Sensorless controller suggestions

    Hi, I need controller for Bafang BPM motor - it is sensorless version. It is for this motor I asked info here http://endless-sphere.com/forums/viewtopic.php?f=2&t=64096 Want to use 48V battery, 25-30A peak amps would be ok i think. contollers with LCD and PAS option would be nice too. is this...
  4. M

    Bafang BPM motor with 6 wires?? (3 phase, 3 hall?)

    Hi, can somebody smarter explain, what kind of motor is this? It has connector with 3 fatter wires - these are phase wires. But only 3 wires for halls instead of 5? http://www.ebay.com/itm/281467148278?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT&autorefresh=true What controller...
  5. M

    what do you think about roto-verter?

    http://www.panacea-bocaf.org/rotoverter.htm Can it really work? It would be best thing for EVs, could use tiny battery pack. AC induction motor is little diffent than brushless motors we use in ebikes? Could that thing be applied to brushless motors? Would like get comments from people who can...
  6. M

    mid-drive chain durability/longevity

    Hi, would like to know how long chain last if used in GNG or other mid-drive setup. I have 8 speed cassette and KMC X8 chain and currently I have ridden 1500km and it is about 1.0% stretched. Measured it with chain tool. So time to replace it. About 1100km of that 1500km is after converting to...
  7. M

    Are you using fuse in battery harness? What type?

    Hi, I made my serial harnes with inline blade fuse holder and using 30A fuse. Peak draw is 28A so it does not blow. But it gets warm when riding fast (around 20A continuous) because wire gauge should be fatter - at least 14 gauge is fatter than wire in fuse holder, probably 16 or someting. Do...
  8. M

    Please avoid ebay seller "rchobby*2012" ( BC168 charger)

    Hi, I bought BC168 charger form ebay seller rchobby*2012 Received charger and it broke in 30 seconds. http://www.youtube.com/watch?v=exet4jAfA24 "When connecting charger to computer power supply, it probably creates short and everything shuts off. Probably power supply protection kicks in...
  9. M

    GNG jackshaft freewheel broken. EDIT:Rebuilt and repaired it

    Hi, something happened to my freewheel - if motor turns, its center part turns with shaft but sprocket is not turning under load. It turns when rear wheel is lifted from ground. Has anyone had similar problem? It started to slip when started from stop (did not give much throttle, was gentle...
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