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  1. S

    New hub motor build-questions about boost controller(1.75kw pk DD hub 48v nom batt.)

    Hi - thanks very much for this reply. I've played with the simulator and its prediction is that a 72v nom voltage will give me another 9kmph or so usable, but less torque which is my motivation to try raising the voltage when at higher speeds. I appreciate your comments on the wasted energy and...
  2. S

    New hub motor build-questions about boost controller(1.75kw pk DD hub 48v nom batt.)

    To be clear I mean, I'll get reduced torque because of reduced amps, but be able to push against the friction and air half as hard as before rather than not at all, so will creep up past 31 slowly.... I also saw a thread on reddit about adding another set of turnigy limply batts in series to...
  3. S

    New hub motor build-questions about boost controller(1.75kw pk DD hub 48v nom batt.)

    Hi. this forum has has been a very helpful resource in building my ebike recently. Had prev experience with 500w hub motor on SLA batts years ago which was functional but now I'm using an eBay 1000w generic 48v front hub, put on one of my road bikes recently. 10ah lithium iron phosphate in...
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