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  1. J

    LIPO charging

    Thanks, that is helpful.
  2. J

    LIPO charging

    I think your terminology is wrong. 12C is supposed to be multiplied by the capacity to get the amp rating. Whether the 12C is realistic for something other than very short bursts is a different question… If you have any useful information on sustained performance that would be helpful. If your...
  3. J

    LIPO charging

    I’m not sure I understand your post. Are you saying these 20AH pouches can only send out a continuous 5-9 amps?
  4. J

    LIPO charging

    I can’t fit a 72v lion pack in my triangle and don’t want to wear a backpack battery. Chaining together multiple lion packs and finding ones that will fit and put out enough amps, or making a custom pack, loses any cost and simplicity advantage lion might have. And even taking the 12C with a...
  5. J

    LIPO charging

    That sounds simple enough, just use a regular bms and charger. Still thinking through case options, found some good threads on the topic. Thanks!!
  6. J

    LIPO charging

    Combination of amps and mounting flexibility, my frame won’t hold a triangle pack like that.
  7. J

    LIPO charging

    I’m looking at using 5 4S 20AH LIPO in series for my bike but having trouble thinking of a reasonable charging and balancing solution. What do people recommend? Alternatively, I’m considering 3 6S 20AH LIPO which seems relatively straightforward to charge using a 6S 4 port charger connected to...
  8. J

    Understanding and Using EGO Power+ Batteries

    I connected 2/3 in parallel. I just made sure they were fully charged when I plugged them together and never had any problem. I also used a fuse for backup, but never needed it. Once installed I charged them in parallel.
  9. J

    Variable regen brake lever

    Anyone selling variable regen brake levers?
  10. J

    Understanding and Using EGO Power+ Batteries

    While that's true, you can get a 5ah battery and a yard tool for $200-$300. And the warranty is actually really nice and easy to use. Still, great to have options for getting the batteries cheaper. Did you crack it open or otherwise test it to make sure the batteries aren't counterfeit or...
  11. J

    Chevy Bolt first drive

    I wonder if these will get tested somehow and resold as something else, perhaps making their way to hobby users at some point. Or maybe they'll just recycle them.
  12. J

    Two battery packs- One for torque, one for speed

    It's phase amps (controller output) not battery amps (controller input) that create torque. A controller that could use both batteries is probably going to create about the same phase amps at the same speed with either battery. So the 40v battery with be lower speed without any extra torque...
  13. J

    Phaserunner + CA switch

    I have a baserunner and a ca3 and I use a switch from grin (CA3_MFSwitch) that I use to toggle speed/power settings and that includes a power button that turns the controller and ca on and off.
  14. J

    Building 1500-3000 watt 48v+ bike

    If the goal is to mostly go 30 and sometimes go 40, 2kw is enough for that. It won't get you there as quickly as 3kw, but it will get you there and maintain the speed. At least I don't have any problems going 40 on my gmac 8t at 2kw. Well, no problems but overheating the motor if I keep it up...
  15. J

    Choosing a cell type for GMAC 10T trike build

    EM3EV has already put pretty conservative ratings on those batteries. Take the 25r for example. That's a "20 amp" battery, which times 7P would be 140 amps. They have it listed as 40 amp continuous 55 amp max. Note that their battery build and BMS choice is limiting the max amps. Maybe the...
  16. J

    Choosing a cell type for GMAC 10T trike build

    Your 25r numbers are low. Em3ev has them at 40a/55a, which sounds conservative, they are rated at 20a each. I have no problems pulling 40a continuous on 6p of 25r with my gmac 8t. With the 8t I want 40a continuous. I think with the 10t you need less. So all 3 you listed and the 25r should be...
  17. J

    Primer on Wiring Lights into an Ebike System?

    The cycle analyst (v.3 at least, I haven't used earlier versions) has a DC power output that exposes full battery voltage and 1 amp. You can plug ebike style lights that accept a wide range of voltage directly into that (ebikes.ca sells these) or plug in a DC to DC converter and then the lights...
  18. J

    Stealth Bomber type electric enduro purchase

    Very helpful, thank you for the detailed reply.
  19. J

    Stealth Bomber type electric enduro purchase

    I think I understand braking, tire grip and enough rotor not to overheat. Easy enough to test. But cornering? Can you go into it a little more? Tire grip again and something about the shock? Method to test?
  20. J

    I'm writing new forum software for us and others - any experienced php coders here?

    I like the feature list and I do think something needs to be done. My PHP and JavaScript skills are pretty rusty, but I would contribute money. My concern is that it is creating something that wouldn't have life beyond you neptronix and wouldn't be anymore likely to be updated in the future...
  21. J

    The future of our forum - facebook versus web forums

    My point of view here is somebody who's relatively new but also relatively into this kind of stuff and into this forum. From what I've been able to find this forum is the best online e-bike resource available. so everything below is constructive criticism. this is the go to place for me. and...
  22. J

    EBIKE using Lawn mower batteries

    The purpose is he already has the batteries and doesn't want to buy a new pack if these will work. The controller steps down the voltage, perhaps that could be enough? Use a 120v controller and a 48v motor and never let the controller go over 50% pwm? Maybe someone who knows more than me would...
  23. J

    Milwaukee M18 conversions

    Very nice, clean builds :)
  24. J

    EBIKE using Lawn mower batteries

    120v 2.5ah, sounds more like 250whr. Two in parallel seems like it should get you somewhere with a mid powered motor, something you'd be running 1500 watts through, plus or minus. Not something huge like that 273 qs motor. But volts that high and ah that comparatively low sounds hard to...
  25. J

    MAC GMAC Hot Rod Info

    Yes, that is a useful table. 40mph is over 500 rpm (on a 26 wheel) so that might get you a couple hundred more watts. The time to steady state is also important. At 50 F outside temp I am able to drain a 15ah battery before overheating running at high rpms and 1500-2000 watts pretty much...
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