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  1. R

    Bafang BBSO2 comments on new build

    I just put the Bafang 750W middrive (from Luna Cycle) on a cheap 20" folding bike. Overall I am pleased: it is quiet enough, the assist function works pretty well, it is plenty powerful enough, and there is minimal drag when not turned on. The criticism is that the free-run crank speed is too...
  2. R

    Requesting recommendation

    I've had a couple hub-motor kits (last one was stolen). Now I'm shopping for a kit and am leaning toward a middrive. I use the bike primarily for commuting and errands. I live in a hilly city. I only want to use the motor for climbing hills, always less than 10% grade. 350W motor on a...
  3. R

    Friction Drive: Add-e and Go-e OnWheel

    The appeal for me of these systems is their weight, portability, and simplicity. There is no question about range (they both have limited range). There has been concern about noise, tire wear, slipping, and dirt getting in the bearings, most of it speculation. And then there are the company...
  4. R

    help with diagnosing problem

    My equipment: 500W MAC high torque geared hub motor 9 fet 30A controller 36-48V 10 Ahr 36V 3C LiFePO4 battery purchased in 2012, cycled maybe 300 times, not deep discharges. I have no special diagnostic on the bike, just a throttle. My problem: I ride the bike on flat ground fine, but then hit...
  5. R

    Torque arm rear wheel?

    I'm mounting a 500W Mac rear hub motor. I was wondering if the rear dropouts are strong enough or if I need a torque arm for the rear. I took one off my decommissioned front hub motor but it doesn't fit. Robert
  6. R

    Questions about controllers

    I'm going to buy a Mac 12T geared hub motor and infineon controller. Paul (em3ev) has some good info on the website, and I went through the educational video on the infineon website. I have a 3C 10Ahr 36V battery already. A couple questions about the controllers: Website says the 25A 6FET...
  7. R

    Contact info for Mac hub motor

    I am trying to find the contact information for the supplier for Mac hub motors. I know that the vendor in China has posted on endless-sphere and remember that folks have had good experiences dealing with him. Does anyone have his website, email, etc.? Robert
  8. R

    Rain problems

    I added electric assist to my folder. This year the bike started misbehaving: motor would just engage on its own, and sometimes turning the throttle did nothing. The problems are intermittent. I have a kill switch next to the throttle but no kill function on my brake levers. I am wondering...
  9. R

    throttle types, and wiring questions

    I am trying to uncover some basic information about twist throttles. I have a ORO twist throttle from a E-4 kit (I think this is basically a Cyclone motor kit adapted for a recumbent). The throttle has 5 wires, some LEDs which I think indicate battery voltage. I can't really find anything on...
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