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    Sram Sparc voltage & rim size

    I have a Sram Sparc hub which I wished to build into a bike but can find almost no info. What I have found is that there were to wheel size hubs (20" & 26") & 2 voltage (12v & 16v)! What I have not found is how to find which size & which voltage my hub is? Also, where to get parts like the...
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    Lafree parts

    I have followed the tests, as per your forum, for the Lafree Twist & find the 'motor sensor' (hall?) is faulty. Can anyone help with a parts supplier for this prefer South England, please.