to disappear the mighty sparks, is easy. this will work for every controller to have normal BIG sparks. Some controller like cyclone has this problem too. adding a 2way switches, one "ON" the 1st switch..and 1- 2 sec you can switch number2. yes it is troublesome, but this works to avoid the mightly sparks. maybe there are better ways to do. im used to it switch 1 and 2 later, i am doing this for a couple of years. This will be good for the controller also. The higher volts , the spark is stronger!
what really interesting me, the controller can out put the current by spinning the wheel. when i spin very fast, i can get 40v, not bad right?? I always thought Regen is for very expensive controller. The price for a Regen COST MORE,, if you see vpower controller they put REgen controller price is higher compare to standard one. So the kelly web page,, regen controller will cost alot more to buy. biox kit, their controller have a Regen too! it is very unlikely to over charge the battery. to what i have read in some threads.
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Conhis hub motor run on April 2010, 48v 1000watts hub motor distance run 5800km, and Re~alive cyclone kit bought in year 2009, Bought a greentime controller 18fets- 4110 , 48v~ 90v , 3-speed mode. Latest top speed I got for my greentime controller 76.8km/h ! , yet to reach 80km/h, or I will never reached 80km/h ?