Hub motor spins, wheel does not?

[bram]

So, my eWind Classic's controller broke, and I tried two different XunLiDa brain power replacements.
First one worked, although not with PAS, only throttle.

The second one has the strangest problem!

When I open the throttle, I hear the hub motor spin up! But the wheel does not move!

The only way I do get some wheel movement, is in the learning-phase with the green wires closed.

How on earth can a hub motor spin up, with stationary wheel? Is there a clutch in there???

The fact that the wheel spun with previous controller, and with this controller in learn-mode, tells me the motor should be fine. It just acts really strange as if it has a built-in clutch that is open?

 

[NCC1941]

Your description sounds like a geared hub motor running backwards.

 

[Voltron]

Yeah... What he said.

And yes, there is a clutch in there... It lets the wheel coast when the power is off.

I don't know the exact bike... If it's front motor with rim brake, you might be able to just turn it around.
If it's rear, or disc brake, or both, you have to start swapping the colored motor and sensor wires until it runs forward. One of mine for example, is yellow to yellow, blue to green, and green to blue. It's the same for the skinny sensor wires, with the red and black staying red/red black/black.

 

[bram]

Your description sounds like a geared hub motor running backwards.

Thank you so much NCC1941, that helped me so much.

It now all makes sense.

I managed to reverse the drive direction with the green wire. I tried that before, but I think the trick is to disconnect the green wire after programming, BEFORE you switch off the controller.

The wheel now turns on throttle.

On to my next problem: making PAS work. The eWind had 4-wire PAS, and the controller has 3-wire PAS, so I need to figure out if it is compatible or not. I also have a third party 5-magnet PAS I could try.

 

[docw009]

A three wire PAS sensor is very inexpensive, and will work if you cannot figure out the 4 wire.

 

[bram]

A three wire PAS sensor is very inexpensive, and will work if you cannot figure out the 4 wire.

Thanks, yeah, I had a 3-wire 5-magnet sensor as well.

The first XunLiDa controller I bought worked with neither the bike's 4-wire nor the cheap 3-wire.

I decided to give it one more try, and bought a second XunLiDa, with different model number (but looked the same.)

The second XunLiDa worked with the 3-wire one. (Not with the bike's 4-wire.)

So it will be hit or miss with XunLiDa, you may have to buy multiple units, so it's good that they are so cheap.

But the bottomline: My eBike rides again! Thank you everybody at Endless Sphere for sharing your knowledge!