Have just acquired an EVG (or EV Global ) E bike 24V . It was sitting at a friends barn getting trashed so she gave it to me . Dont know much of its history but love dickering on things like this so I dove in . Swapped out rotting tires for some slightly used mtn bike tires I had , cleaned it all up , took it all to pieces , recycled old sla batteries and ordered 2 new ones put it all back together. It did all the beeping with new battery installed , scrolled thru the colored lights to show full charge . Lights worked though little light on switch doesnt show them as being on. Tail light works, brake lights and sensors behave as they should after a little convincing. Alas no motor response when throttle applied.
What I have checked/ done.
Checked throttle with multimeter according to downloaded manual and resistance changes or doesnt as it should across red/black...brown/ black .
24 V at positive lead from controller to ground when throttle opened. as it should .
0-24V at quick connect that goes to rear hub/ motor as I give it throttle (actually up to 25.8V)
no response if small wires from thermistor (think that's what its called) are disconnected. Once connected responds as before.
Took off rear wheel and removed motor.
Definitely had suffered from some weather not too bad but some corrosion .
Connected jumpers from battery to leads to motor and Voila it turns over . Put it in vice and reconnected and it hummed (well maybe not hummed) but ran fine . Thought maybe I loosened up some crud or something .
I then reconnected leads from controller to motor ,(just the motor no wheel hub/rim etc) connected leads for thermistor and tried throttle ..Nothing ?? Tested ends of leads from controller and still get 0-25.8 V with actuation of throttle
So I'm out of ideas . new batteries, full charge, 24V motor and controller (I believe). Not the brake sensors as I tried with them disconnected from controller also .
Love any ideas , comments
Mike
What I have checked/ done.
Checked throttle with multimeter according to downloaded manual and resistance changes or doesnt as it should across red/black...brown/ black .
24 V at positive lead from controller to ground when throttle opened. as it should .
0-24V at quick connect that goes to rear hub/ motor as I give it throttle (actually up to 25.8V)
no response if small wires from thermistor (think that's what its called) are disconnected. Once connected responds as before.
Took off rear wheel and removed motor.
Definitely had suffered from some weather not too bad but some corrosion .
Connected jumpers from battery to leads to motor and Voila it turns over . Put it in vice and reconnected and it hummed (well maybe not hummed) but ran fine . Thought maybe I loosened up some crud or something .
I then reconnected leads from controller to motor ,(just the motor no wheel hub/rim etc) connected leads for thermistor and tried throttle ..Nothing ?? Tested ends of leads from controller and still get 0-25.8 V with actuation of throttle
So I'm out of ideas . new batteries, full charge, 24V motor and controller (I believe). Not the brake sensors as I tried with them disconnected from controller also .
Love any ideas , comments
Mike