Join Date: Jun 2009
Location: Victoria BC Canada
Bikes: 89 Battaglin, 07 Tarmac SWorks, 13 Lynskey Cooper, 14 Lynskey Pro26, and more
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Same problem here. I ordered the Chinese 48V/500W SLA system from Rayben motors on eBay. Great price for a casual use toy - if it works.
I set it all up on a 5 speed retro cruiser (with V brakes) and charged the battery. Twisted the throttle and nothing happened. Batteries read 52V.
Re-checked the connectors, and one of the wires had pulled out. The I wired it directly instead of through the connector. Discovered that another connecter had bent pins, so I straightened them out . ... The wheel started up and ran for about 1.5 seconds and then stopped and would not run again. Re checked connectors and once more it ran for 1.5 seconds once, then not at all.
I am not sure what is going on, except for this: avoid the cheap Chinese junk if you don't want to do a fair amount of problem solving. I am going to cut off the connectors and solder the wires directly to eliminate any chance they are messing things up. I suspect it is a bad controller, though. If soldering fails to solve the problem, I hope I can return it with the connector cut off, or soldered back on.
I was thinking of ordering a higher quality controller to use with this battery and motor, but many of the controllers I see with other brand names on them look identical to the one I have - ie same part, rebadged. Any recommendations?
Last edited by bcsaltchucker; 06-07-09 at 12:27 PM.