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  1. E

    help with BMS S12SN controller

    So I have the LCD now. I'm still not getting the system to function.I've connected the LCD and tried to switch on, but I can't get the LCD to stay illuminated for more than a fraction of a second. I put a multimeter on the power wire that goes from the controller to the LCD, and there is...
  2. E

    help with BMS S12SN controller

    Ah, I see. I ran my previous setup without the display, but they sent the S-series controller because the one I ordered was out of stock ... D8veh, do you recommend one of the S-series controllers over the others? I know you've done a lot with BMS systems.
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    help with BMS S12SN controller

    Hello, I recently received a S12SN controller from BMS Battery and thought I'd have an easy time swapping out the KU163 controller that came with my Q11 motor, but alas, tis not so. I had a lot of help from several folks when I did the original setup and was hoping to call on their knowledge...
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    help troubleshooting first ebike build

    I did read the Sheldon Brown and several other sources. I do almost all of my own bike work/maintenance, and will get to wheels, but I run a flower biz and we had this little thing called Valentine's that was keeping me busy :) and I wanted to ride that bike. The $20 spent at the LBS was a great...
  5. E

    help troubleshooting first ebike build

    I thought I'd update after a few weeks. I have had the chance to take a variety of rides of various lengths and grades (we are in hilly Southern California) culminating in a 20 mile trip yesterday. My 8 year old son has named the motor "Fasty" and declared that we must treat it like another...
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    help troubleshooting first ebike build

    According to the Calibike guy, the white switch is off purely for shipping. I've tried to call him, because if I don't need it anymore, i'd like to get rid of it. When I get through, I'll let you know. As far as a review of the battery, let me know what to measure, and I'd be glad to report...
  7. E

    help troubleshooting first ebike build

    O joy! I hooked up the throttle, got 4.38 volts when I applied throttle. Hooked up the hall connector and phase wires, got voltage, lifted up the wheel, gave the throttle a twist and, yes!, power delivered to the wheel! The sound is a low whine, seems normal to me. One thing that I discovered...
  8. E

    help troubleshooting first ebike build

    To answer Neil's question, I never connected the battery to anything other than the battery connections on the controller. And yes, different throttle. I'd forgotten to look closely at that first picture and had been wondering why we were talking about a red button. Glad that is cleared up...
  9. E

    help troubleshooting first ebike build

    I think I've caught up to you now and understand how to use the probes correctly. I left it alone for a few hours and am now testing per your instructions. voltage reading on the battery by itself: 54.1 I then connected the battery to the controller, nothing else connected. black probe...
  10. E

    help troubleshooting first ebike build

    Here is the issue I mentioned: another user was having problems turning on controller with the same battery I bought. http://endless-sphere.com/forums/viewtopic.php?f=2&t=64977&p=991093&hilit=calibike+48v+15ah#p991093 Perhaps one solution would be to take my controller to ebike shop and ask...
  11. E

    help troubleshooting first ebike build

    Please see photos of plugs below. I threw in one of the battery for good measure. The throttle does not have a switch or fuel gauge--nothing other than a twister. As finally answered in previous post, the connectors to the kit are unique--there is no mixing them up. So, I think I understand...
  12. E

    help troubleshooting first ebike build

    Here are answers to all previously asked questions. When you initially connect the battery to the controller, do you get a big spark? or do you know about pre charge and have you done something to avoid it? ANSWER: No big spark, and I’ve done nothing to avoid precharge. I'd take everything...
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    help troubleshooting first ebike build

    Gentlemen, Thanks for your continued assistance. Didn't know about the quote function, and now just can't figure it out. And I thought I was an internet guy. Anyway, have just gone through Neil's request for answers and will post that shortly. Then I will review your new posts starting with...
  14. E

    help troubleshooting first ebike build

    Sorry, work got in the way of seeking higher truths in the world of ebikes, but in the last couple of days, I got a key from the vendor on the wires in the controller. However, my controller does not have the ignition wire as shown in their diagram, so now I'm not sure I got the correct...
  15. E

    Asking opinions on first e bike set up

    I finally bought my first kit after over a year of looking at bikes and kits. The readymade bikes I loved were all over $3k, which I couldn't justify for my intended use as a errand-running, beach getaway bike. My kit and battery total is $700 and I am putting it on a used bike that I bought...
  16. E

    help troubleshooting first ebike build

    To answer Neil, No big spark when I connect the battery to controller. When I connect the voltmeter per your instructions, I get 50V at many, if not all connections. However, after connecting orange and blue wires per D8veh's instruction, plus connect battery, motor and throttle, I get no...
  17. E

    help troubleshooting first ebike build

    You mean the two white wires at G, I presume. I'll hook it up and let you know what happens.
  18. E

    help troubleshooting first ebike build

    D8veh, Many thanks for unlocking that mystery. So, if I don't have an LED panel, I connect the blue to the red on K? Maybe throw a switch in there? Do I need an LED panel? And for that matter, do I need to install the PAS sensor, or will it work on throttle alone? I realized this old...
  19. E

    help troubleshooting first ebike build

    Thanks for the continued advice and problem solving. Alright, here's the controller pics. Explanations of what this rat's nest of wires are all for will be greatly appreciated. To clear up some confusion--the battery had a red and a black thick wire. The wiring caps aren't permanent, just...
  20. E

    help troubleshooting first ebike build

    Had to resize photo ...
  21. E

    help troubleshooting first ebike build

    Stud and D8veh, Yes, checked the voltage: 50.5V When changing connectors, I added wire (connectors came with controller) and kept red to red, black to black. See picture. I did not hook up the PAS sensor yet. Just trying to get it up and running with throttle. Re orange ignition wire...
  22. E

    help troubleshooting first ebike build

    A small plea for help: I excitedly assembled my first ebike kit yesterday, a bmsbattery Q11 48V 1kw kit, and attached the battery-- a calibike 48V 15Ah battery-- and whalah! Nothing. No power, no sound, nothing when I gave a little twist on the throttle. I'd appreciate any suggestions for...
  23. E

    choosing the right battery

    When I said "right battery" I meant one that fits the specs of the controller and motor so that one thing or another doesn't fry. Obviously, there are many chemistries, capacities, etc., that can be chosen within the range. My question is more along the lines of how does an ebike builder...
  24. E

    choosing the right battery

    I'm hoping someone can give me some guidance as I'm still struggling with the electrical math. I bought at Q11 48V 1kw ki from BMSbattery that I am waiting on. I understand from reading Micah Toll's book that it comes with a 30A controller. The BMS website says the controller is "1kW...
  25. E

    considering hill grades on first ebike build

    Thanks to everyone who has put time and thought into this problem. The discussion has helped me, but also challenged my memory of high school physics, and I have some questions. To sum up what I've read so far, with my load of 450lbs, I need 2400W to get up that 17% hill at 20mph. Now, I'm fine...
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