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  1. C

    Em3ev controller surging

    Sounds very similar, but not exact. Paul is working with me but I'm busy and the time delay keeps it from moving along fast. Anybody with more ideas? Thanks!
  2. C

    Em3ev controller surging

    So I upgraded my controller to a 12 fet 40amp controller from Paul and also bought the matching switch, cruise control, and throttle. It's running my Mac motor that runs fine. I upgraded from 5s to 6s so I'm now at 48v with 10ah. I have two questions if someone could help me out... 1)...
  3. C

    My own build; FX-E

    I gotta say, at first glance I thought it was the before pictures. Great job making it stealth, I will use it as an example to show my coworkers what a true assist bike looks like!
  4. C

    Charging from two sources, Balance from 1?

    So I'm running 4 5s Lipo's, two in parallel and then the two packs in series. I have a plug that is modeled after Trench's plug, http://endless-sphere.com/forums/viewtopic.php?f=6&t=37489 an incredible design and thought I'd copy it...thanks Trench. But I don't have the powerful charger that...
  5. C

    CA wire, can it be cut?

    Thanks...I'm off to hide wires!
  6. C

    CA wire, can it be cut?

    I'm building a new bike and would like to make it as tidy as possible. My battery box is midship and I'd like to run the wires through it, but the shunt is too large for the hole. I'm trying to keep the holes small, so could I cut the wire leading up to the head unit or is that a calibrated...
  7. C

    Custom quick battery connection

    Sorry for leaving some info out...yes, 36 yvolts. Yes 4 ports, not cells :(. So I guess ultimately I'd like to drive up and disconnect my battery and plug into a charger with a long cord, charging on the bike. It would simplify the charginfg process. I think that is holding up a lot of...
  8. C

    Custom quick battery connection

    Im getting tired of disconnecting all four 5S battery bricks and connecting them individually to a four cell battery charger. So I'm wondering if someone already invented a way to quickly disconnect them from the bike and connect to charger. I'm thinking about something like kong has made...
  9. C

    Finally RUNNING!! page 5 ride vids Here!! need better qualit

    One of my favorite threads, look forward to your updates and final product. Please keep us informed on how you are doing...and forget about that oil burning machine...ebikes are more important...remember your priorities! :)
  10. C

    DC Brushed motor efficiency question

    So I've pulled off the motor and cleaned it up pretty good. Lightly surfaced the area the brushes ride on (comutator) and ensured the brushes springs were strong and even. They all had good shinny surfaces and entact. Bearings spin very easily and no play side to side with them. Riding to...
  11. C

    DC Brushed motor efficiency question

    Thanks for your complete explination. I'm going to do a little more riding and evaluating. I'll start to learn my Wh/mile...that will give me a good idea of things, and a starting point at this point. I'm also going to take a look at my Brushes. I've looked before and although I see sparking...
  12. C

    DC Brushed motor efficiency question

    Just wondering if adding a long length of wiring would give me these symptoms. I just rewired the bike to have power wires running up to the Watt Meter, maybe that is too much restriction...any thoughts on that?
  13. C

    DC Brushed motor efficiency question

    Not sure how to calculate the W/h stuff, any good links for all that to read up on? No load I'm sucking about 2.2 amps...not bad I guess, Did a little more monitoring while coming home and found that I'm pulling over 1200 watts on a 800 motor...how is that possible? I never sagged below 36.5...
  14. C

    DC Brushed motor efficiency question

    So I've been running my trusty 800w brushed DC motor for 10 years. It's 36v and I recently went to LIPO and installed a watt Meter and am unhappy with my numbers and looking to smarter people to direct me to some reading. A 4 mile trip brought me down to 39.27 volts after hot off the charger...
  15. C

    Efficiency of old verses new

    10% is nice, but not enough to jump off yet. I'll wait just a bit more and get used to these LIPO's first. Thanks!
  16. C

    Efficiency of old verses new

    For years I've been running an 800 watt brushed motor from from a scooter and adapted it to my bike. I used a Curtis Controller with no real limits on Amps. I ran SLA for a long time and then used a NIMH pack. Both packs died and I had to take a break for relocating to the East Coast. I'm...
  17. C

    Honda Accord build - starting now

    You may want to check out http://ecomodder.com/
  18. C

    What would you build with this shop?

    Free student labor...I can beat that...I have professors chomping at the bit to help out. They love the idea of electric bikes and can't wait to pump some products out!
  19. C

    What would you build with this shop?

    Ok guys and gals, I've been driving an ebike for 8-9 years now and have about 3K miles on them. Used to commute with one but then just off and on. I now have a job where I'm basically a shop teacher and have access to shop in the pictures. I have a problem designing things, but a blue print...
  20. C

    Wife finally wants one - $400ish budget

    Thanks a ton for all the suggest sources of supply. Best advise is to have her try mine out. I'll let her take it for a spin as soon as I'm done...maybe a few weeks...very busy time for me. This is why I love ready here, you guys can make heads or tails of this stuff so much better than I...
  21. C

    Wife finally wants one - $400ish budget

    So the wife is actually interested. I've been riding an Ebike since living in Hawaii 7 years ago. I heavily leark around these boards and try to absorb all that I can. I really need to find someone to talk to in my area, I can keep everything straight...in come my question. She has a...
  22. C

    Motor AMP draw

    Well, I'm rethinking by whole project. I put that big controller on there because I used to run SLA batteries and the Hawkers could handle extreme AMP draw. These did really well too but now I'm concerned. I'm thinking I need to get a new controller, but my knowledge of these things are not...
  23. C

    Motor AMP draw

    Good point Jim, I'll research that...but the extra range really appeals to me to. I may be putting this into a hub motor soon or a brushless motor for a real cruiser so I'm thinking the extra range is looking attractive.
  24. C

    Motor AMP draw

    Well, got a hold of a AMP meter and did a little testing. As I said, my hub is a SRAM Dual Drive so it's a 3 speed internal. Top speed is geared to about 36. First gear with a wide open acceleration drew about 35 AMPS for about 3 seconds, but steadily went down to about 11 once it was to top...
  25. C

    Motor AMP draw

    Oh, and the battery pack is from the Voloci that went tits up and the pack is almost 7 years old to me, no telling how old before. It has been great for me, but as noted, just is not working anymore. Hate to get rid of it, the style just fit me perfect, now I have to figure out how to mount...
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