I acquired an X-Treme XM-3150 about 7 months ago. Other than the DC/DC stepdown converter crapping out on me twice, it has been a pleasure to own and really added an infinite dimension to my life. I have cystic fibrosis and can't breathe well enough to get around on a regular bike. This bike has allowed me to get out of the house and live a little.
It all went to hell last week when it decided that it wanted to kill me for the second time. I was sitting on the bike to leave a friend's house... I put the key in, toe-tapped the kickstand up and just touched the throttle when it took off and slammed itself and me into a wall that had been 8 feet away. As I was going down, my death-grip on the throttle broke it and pulled it apart.
I needed a way to get home and no way to get the bike home without pushing it so I fiddled with the throttle handle a bit thinking that it looked pretty simple. I slid it together and it took off again like a dragster. After that I decided to leave it alone till I could get home and look it over.
One $75 tow truck bill later and it now sits in my driveway unable to move. AAaagh!
Here is where I'm at...
I have replaced the throttle with an OEM replacement.
When I put the key in the on/off switch and turn to the on position, there is a mild "thunk" noise in the hub-motor. The battery life gauge lights up as it should but nothing else. This was happening before I installed the new throttle/accelerator.
Here's the big question: What the heck is that thunk noise in the motor? Is there a relay or fuse that has been overloaded?
Any ideas on how to diagnose this bike to determine what is wrong or what needs to be either fixed or replaced?
I thank you genius' in advance.