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  1. ITgreybeard

    Sourcing a project box

    I travel through Portland often enough that it ought to be easy to get to. :) Thanks!
  2. ITgreybeard

    Sourcing a project box

    Where do folks in the states source your aluminum project boxes for controllers?
  3. ITgreybeard

    Will a 36 volt controller handle a 48 volt battery?

    :) Hello, dnmun. I read your response together with Lessss's and concluded (wrongly? rightly?) that it has a chance of working but it would be highly dependent on the features of the particular controller, in that some 36V controllers would blow circuitry because initial (48 volt nominal)...
  4. ITgreybeard

    Will a 36 volt controller handle a 48 volt battery?

    Thanks to both of you. From what I understand here, I will NOT put a 48v battery on a 36v controller, as the initial high voltage could blow the controller circuitry. Do you have recommendations for a line of controllers (perhaps programmable ones), monitors and throttles that would be good for...
  5. ITgreybeard

    Will a 36 volt controller handle a 48 volt battery?

    Sorry about this newbie question, especially if it has been asked before ('search' is too general to ferret out the topic). Can a controller for a brushed or brushless motor be powered by a battery with a higher voltage rating? Does it moderate the voltage passed to the motor? If not or if the...
  6. ITgreybeard

    Dual freewheeling bottom bracket design

    Hi Miles. Your bike looks like such a sweet setup! I love it. How well are you able to minimize weight to maximize its portability?
  7. ITgreybeard

    How about this approach?

    This looks promising... http://www.youtube.com/watch?v=m3CpUy7p4-0
  8. ITgreybeard

    An Advanced Friction Drive System

    Oh, I wasn't predicting 65kph, but thought I had seen it as a target speed. Now that I've reviewed the entries, I see a 6S not a 65. <-- older eyes, you know... A nice feature of the friction drive (or whatever it might be called*) is that its performance does not depend on wheel diameter, in...
  9. ITgreybeard

    An Advanced Friction Drive System

    Oops. My question about whether the can will take the high turns reflected my ignorance of the technology, I now understand. If my updated understanding is correct (via http://endless-sphere.com/forums/viewtopic.php?f=28&t=7409&start=15), the can on an outrunner turns as part of its ordinary...
  10. ITgreybeard

    BE-Bike - The project starts NOW - Turnigy 130KV Brushless

    ...and if you haven't read Kepler's friction drive story, it could be very worth your while: http://endless-sphere.com/forums/viewtopic.php?f=28&t=16550. Best wishes.
  11. ITgreybeard

    An Advanced Friction Drive System

    Let's see if I can do some calculations accurately: 45kph = 1250cms. With the 4045(Zs[=new model]) at 49mm diameter, its circumference is 31cm (no sleeve). At 1250cms, the can is doing 40rps aka 2400rpm. At 65kph the rps is up to 58rps aka 3500rpm. That's nicely under the 4045's max listed...
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