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I have been using my throttle for my ebike but decided I wanted to try the pas sonsor. I connected it and now when I pedal backwards it works but not forward. My bottom bracket would only accept the pas on the sprocket side otherwise I would just take it apart and put it on the otherside. can I...

i bought my 48 v 20 a here http://www.dhgate.com/?f=edm|auto|1orderserviceC|browse1|20170203