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  1. wanders

    Xie-Chang controller documents

    The current "Infineon" controllers sold by Keywin and others as well as the newer 18 FET controllers which are currently being by rebuilt by Methods and Doctorbass are in fact controllers which are designed by Xie-Chang. There are controllers with the Infineon XC846 microcontroller as well as...
  2. wanders

    Excess voltage needed for LiFePo4 during charging?

    Here's a simple question for all you battery chemistry experts (you know who you are, but I sure don't :wink: ) Given that a nominal 48V (16S) LiFePo4 battery pack has a fully charged voltage of about 16 x 3.7V = 59.2V, what voltage do I need for a CVCC charger to actually charge this pack...
  3. wanders

    Crystalyte 40X rear with freehub - real or Photoshop?

    I'm a bit frustrated at the freewheel options available on rear drive hub motors in general, and from Crystalyte in particular. There are international standards (e.g. 135mm dropout width, Shimano-compatible freehub, etc.) and really, how hard can it be to do it right? Just attention to detail...
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