Magnets on e bike

[Aiden Jones]

Hi everyone

As you can see, I'm a new member and the proud new owner of an electric bike. I'm a total thickie when it comes to the technical side of things (voltage, wattage etc) and although I've searched this and other forums, I can't find the answer to my question so I'm hoping that somebody here maybe able to help.

I've just bought an ELife Voyage e Bike which is a 250 watt motor and 36v battery. I find that there is quite a delay from pedalling to when the motor kicks in which can be a pain at road junctions. The round black disc attached to the pedal (the cadence?) only has 3 magnets and I'm wondering if that is the problem.

My question is: If I buy a new disc from the internet which has 12 magnets and swap them over, will this solve the problem? What are the other pros and cons (if any) will there be if I do this?

Please excuse my ignorance concerning this matter and I thank you in advance for any help you can give.

Regards

Aiden

 

[Nealh]

Yes will be better.
8,10 or 12 mag disc will be a big improvement, the signal pulse will be smoother and quite instant.

 

[Deleted member 4366]

I've never seen 3 magnets before.
I would say that the delay is nothing to do with the pedal sensor.

Sensorless motors often have a bit of a delay because the controller has to figure out what position the motor is in before it can give full power. Unplug the connector near the motor. If it has 3 or 5 wires, your motor is sensorless. If it has 8 or 9, it's sensored.

Another reason for delays is crappy software in the controller, which can also be because the cpu in the controller doesn't have much processing power.

I put a 12 magnet disc in a Freego. It didn't work, so I took out every other magnet to convert it to a 6 magnet one, which did work. All the magnets were oriented the same way.

 

[Aiden Jones]

I've never seen 3 magnets before.
I would say that the delay is nothing to do with the pedal sensor.

Sensorless motors often have a bit of a delay because the controller has to figure out what position the motor is in before it can give full power. Unplug the connector near the motor. If it has 3 or 5 wires, your motor is sensorless. If it has 8 or 9, it's sensored.

Another reason for delays is crappy software in the controller, which can also be because the cpu in the controller doesn't have much processing power.

I put a 12 magnet disc in a Freego. It didn't work, so I took out every other magnet to convert it to a 6 magnet one, which did work. All the magnets were oriented the same way.

My apologies, it was a typo, there are actually 5 magnets not 3.

The first reply implies that swapping it out for a 12 magnet would work whereas your reply throws doubt on that. To access the connector as you suggest goes beyond my comfort zone so I doubt if I'll be doing that as for me, it's too technical.

Thanks for your replies, I'll give it more thought.