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  1. S

    Alternator BLDC Mod ~7kw

    Hi, we build am Electric motor bike and the game is for us most power we can handle with MTB parts https://endless-sphere.com/forums/viewtopic.php?f=28&t=96858 at the beginning we just convert a bosch alternator with 103x40mm rotor to a BLDC but at 70 volt and 50 amp the magnetic field jump...
  2. S

    Mid Drive Steel Frame Bike 10kw Alternator Sunwin Controller

    Hi, i will show you our build we do the last months . The Motor is a old Bosch Car Alternator it has 4500 rpm at 75Volt we do it like Sur-Ron 14 to 35 teeth to the pivot point and from there 14 to 51 teeth. As Controller we try a 1500w Sun Fire some people run it till 7500w we will see... The...
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