Electric Bikes - Anyone own/use the LYEN controller off of endless sphere forum ?

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sunnyday
07-30-11, 07:48 PM
I bought one of these about 6 months ago ...the version i got was $129 and made for 1000 watt / 48 volt brushless setup .

It worked fine for a while...and it would properly cutoff at around 42-44 volts....now the damn thing is cutting off power at 50-52 volts....ive only got about 7 rides on it and my battery only has 15 full charges......

anyone ever heard of this happening ? any way I can diagnose it or fix it ? I do think his controllers can be programmed , but you need some type of USB connector for the controller and then you must know how to plug in the parameters. Ive never done it , so its all new to me.

Rin
07-31-11, 09:39 AM
You are better off asking this question on ES, since many posters there have this controller. Ask the question directly of Lyen.
Ypedal
08-01-11, 10:09 AM
Lyen would be the guy to contact for sure, his support is usually very good..

However, the value would not change, a 48v lvc ( low voltage cutoff ) would be aprox 40~44 v , and can usually be adjusted with a resistor value on the circuit board or using the USB programmer thing.

I'd suggest checking the battery, do you have a display on the bike to show you voltage while under load ( while the motor is drawing power ) ?

Often times the voltage you get while the battery is at rest is not the same as the voltage while in use.