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Thread: Oh Goodness!

  1. #1
    Senior Member toolboy's Avatar
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    Oh Goodness!

    I've taken on the challenge of a friends eBike repair. Battery seems ok (55v) but nothing when you turn the throttle. I am trying to find the model # and the best online source for repair advice. The key says eBikes and ASTBLU01. Is that the model?

  2. #2
    eBike Fan/Extreme DIYer
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    No, but the circuitry for ebike is very simple. A battery feeding a controller that feeds a motor, controlled by a throttle. Draw yourself a schematic and start troubleshooting.

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    Howdy Neighbor!
    Coming to you from west of you in Alberta!
    Anyway, some time ago I came across a site in BC that I have found to be full of helpful information,
    the troubleshooting section is:
    http://www.ebike.ca/troubleshooting.shtml

    and something new, which talks about the pedal assist switch, which might be what you are
    having trouble with at:

    http://www.ebike.ca/guides/Ebikes_Basics_Guide_Web.pdf

    So check it out, and hopefully it helps, and maybe post some pictures of what you
    are working on, there has to be some specific help out there.

  4. #4
    Senior Member toolboy's Avatar
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    Thanks! The two links proved very uselful and SpecialX has offered to go one-on-one on email to help as well. I have a complete bike shop in my basement but no experience with eBikes. Lots of pictures have been taken and shared and copious notes and diagrams made (where did that little wire go?) My winter project may succeed in time. Lots to learn: JST and ANDERSON connectors, Pedelec, MOSFETS and Hall Sensors, rotors and stators all add to the learning curve! I just know you'll all be very excited () to hear all my blunders and successes.

  5. #5
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    Welcome to the ebike world (of addiction) Toolboy.

    In addition to the above comments, be sure to check that your brake levers are adjusted properly. Many, if not most, ebike power systems employ a power "kill switch" circuit that is activated whenever the brakes are applied (i.e. brake or brakes on = throttle off). If the brake lever(s) and/or brakes are adjusted wrong the system will not throttle up.

    Good luck with your latest project and let us know how you get on with it!

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    Still waiting on that info in email..
    As soon as I can see the results of your tests, I can help.
    And for now, forget about everything else other than getting it working and THEN we can work on tidying it all up.
    Just for those who may be new here, the more militant membership is convinced that they need some outrageous amount (Seven feet? Nine feet?) of real estate in order to ride their bikes safely - and even that isn't really enough because they figure it'll always be imperfectly paved or not spotlessly clean or that the whole bike lane thing is some "separate but equal" conspiracy to keep them down.

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    Toolboy, some time ago I had come across these articles on how DC brushless motors work.
    I found them very informative, thought you might like them too.
    All the links start in an article in in the Endless Sphere forums

    http://endless-sphere.com/forums/vie...php?f=30&t=240

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