E bike kit diagnostics
About a year ago I converted my Easy Racer recumbent to an E bike with a kit from China. It has now died, and of course my Chinese vendor has vanished. I need some help with diagnostics and buying whatever replacement parts are necessary to get it going again.
I have a 20 amp hour lithium-ion battery with 50+ volts coming out of the associated BMS. The the 1000 W motor is integrated into the back wheel. The thing was running really well, like it would cruise at 45. It cut out temporarily a couple times then died totally. I have no power to the headlight, key switch, horn, throttle lever or battery level LEDs. My suspicion is that the problem is in the controller or some of the controlling circuitry on the handlebars, but I don't have a clue about how to go about diagnosing the exact source of the problem.
Though it looks well designed and built, there are no brand names on any of the parts. I will be glad to supply photos and any additional information if that would be helpful.
I would appreciate it if someone could guide me through the diagnostic process or refer me to a vendor who could. I'm in Spokane Washington.
Last edited by docweathers; 08-31-13 at 09:18 PM.
I would suggest you post on endless-sphere.com e-bike forums. You will probably receive more help there. Be sure you have checked all your connections to be sure none are loose are a wire has come out. That is the first place to start. Realistically I doubt if an e-bike store where you did not purchase your kit is likely to give unpaid advice on a China kit. It could be many things and it takes a process of elimination. If it was the controller you would probably have a burnt electrical smell from the controller. It could be a loose connection on the BMS or a bad cell in the battery. You will definitely need to give more info to get help over a forum. There is a lot of technical expertise on endless sphere.
I will check out electricrider.com and endless-sphere.com. I would gladly pay for salient advice. If there were a local bicycle store that knew anything about electric bikes, I would gladly just take it in and let them fix it, but unfortunately I don't think that exists in Spokane.
Thanks for your help.
Larry - Just bring that thing over to Seattle - I am sure there are some shops that can service you, but call first. You can round trip it in a day if you must but spend the night and enjoy the city - think of it as a vacation or cultural experience - and how about that, your e-bike problem is solved as well.
Maybe you might find some information that will help you at the website below:
I have skimmed through the information at different times in the past, and it seems to have a lot
of information that may help.
At least it is a start!