Replacement Ezee Motor Controller

[kevinfox]

The Motor controller on our Ezee Quando 1 has died (confirmed by swapping wheels with our Ezee Quando 2) and I was wondering whether I have to use a Ezee controller as a replacement or is there something else that is widely available and will slot in. The later Quando 2 is noticeably slower than the Quando 1 was so it would be good to find something that keeps the better performance of the earlier bike rather than slowing it down as per the later spec.
Both bikes have the later lighter 36V 10A battery.
We've moved to New Zealand so I'd appreciate any suggestions as to where I can get the parts from, so far a friendly auto electrician let me use his tools to diagnose things.
Thanks in advance for your help

 

[flecc]

This is a guess, but since the USA is a faster market, (20 mph), the Quando controller there might still have the old spec.

The eZee agents there are Nycewheels of New York and ElectricbikesNW of Seattle.

You could also first mail Wai Won Ching, principal of eZeebike and ask him for the position on Quando controllers. His English is fine:

ezeebike@gmail.com
.

 

[kevinfox]

Many thanks, have emailed him.
Any idea why a motor controller should just die like that? It worked in the UK, we air freighted it down under and it worked initially then died on the first ride. The batteries were sent separately at great expense. I'm fairly sure it hasn't been tampered with in transit as I did the strip down. The fault is something to do with the Hall Effect Sensors as it pulls away like a misfiring car and only gets smooth at max speed, looking at the circuit board there is nothing obvious like a dry joint and the wires test OK.

 

[flecc]

The only trouble I've had with the Quando Hall leads is the five way connector in the sensor leads near to the controller (when that's fitted, early models didn't have it). Unplugging and replugging usually fixes that, and applying some contact/switch cleaner helps.

Hall sensor connection problems can cause rough and noisy running, especially at lower revs. Hopefully it won't be a failed sensor in the motor.

It's probably a co-incidence that this occurred after the move, but at one tme electronic stuff shipped from the Far East often gave connector problems on arrival due to atmospheric and humidity changes affecting the contact metals en-route.
.

 

[kevinfox]

It's been plugged and replugged several times and the fault every time moved to follow the controller and not the wheel - I had my Quando 2 next to it with the cable unclipped so I guess it's unlikely that switch cleaner would do it. Connector looks clean in any case and I've metered out the wires with a bit of thin fusewire in the connector.
I await the reply from China.
Cheers
Kevin

 

[flecc]

Controller then it seems, the eZee ones do fail from time to time.
.

 

[jkirkebo]

The Motor controller on our Ezee Quando 1 has died (confirmed by swapping wheels with our Ezee Quando 2) and I was wondering whether I have to use a Ezee controller as a replacement or is there something else that is widely available and will slot in. The later Quando 2 is noticeably slower than the Quando 1 was so it would be good to find something that keeps the better performance of the earlier bike rather than slowing it down as per the later spec.
Both bikes have the later lighter 36V 10A battery.
We've moved to New Zealand so I'd appreciate any suggestions as to where I can get the parts from, so far a friendly auto electrician let me use his tools to diagnose things.
Thanks in advance for your help

I don't know about "slot in" but a 20A Infineon controller from ebikes.ca will run an Ezee motor just fine. I have just that combo on one of my bikes, Ezee kit with Infineon controller.

You'll loose the pedal sensor and speed restriction, and be able to upgrade to 48V. You'll also probably have to fit new connectors or (better) solder and heatshrink the cables. You might have to get a new throttle too, but that can be supplied with the controller and is not expensive. I opted for a left side half twist throttle.

Also the LED battery indicator will not work anymore, but the Cycle Analyst is so much better anyway and is a direct plug in to the Infineon controller.