Which factory/company produces “WJ” hub motors?

glennb

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Dec 7, 2010
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I’d like to find the “real” specs of a rear hub motor whose code begins with WJ.

The rest of the code contains the voltage, wheel size, nominal power, and manufacture date, but no other clues to the make or model.

I.e. WJ48V200W40H20datestuff

It’s a geared motor that came in a 20” wheeled cargo bike with 35A 60V controller. The retailer claims they’re 250W motors. The motor designation claims 200W. But it’s clearly a 500-800W motor.

Thanks if you can give me any clues to finding out what it is.

(The retailer is not responding to my enquires, for obvious reasons, because they can’t legally sell anything exceeding 250W).
 
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