Help! I let the magic smoke out of my Currie ElectroDrive

[dermot]

So the other day, I was cycling back to work when the motor juddered and stopped working. I looked down to check the power cable was intact, but could see smoke coming out of the motor housing - it had that indefinable 'electronic' smell to it, rather than windings. There is now a dead short across the power leads.

Spike sent me a couple of useful-looking links to help me use an external controller on the internal BLDC motor, but today when I pulled the cover off, I'm not sure where to start with the disassembly.

Here is what I have and what I see with the over off.

How do I get the thing to piees, do I have to remove from the mounting plate and/or bike?

thanks,

dermot

 

[spike]

Hi Dermot

The links I sent you were for the Kollmorgen motor, so not very helpful to you. Sorry!
Hopefully someone will know how to mod the motor in the picture. If not, they are easy (but not cheap) to replace...

http://www.thesuperkids.com/elbipa.html

http://www.evdeals.com/Motors.htm

I have a spare Kollmorgen I could sell but the shipping from Aus would be a killer.

HTH

Spike

 

[JEB]

Hi dm; I had a zapped kollman motor- (looks like yours) take the motor off the gear assembly, remove the retaining ring, push the shaft (metal cup with the magnets) through the assembly exposing the metal/wire wound electrical assembly- I gutted the electronic parts (burned) brought the wires from the motor windings out, and the hall device wires out, to connect to a external controller. Unless you have a lot of time, removeing the potting, circuit board, components, not distroying the drive wires, and bringing them out, a lot of time involved, do it again ????

 

[dermot]

OK, my mistake, I assumed it was a Kollmorgen since it was a BLDC motor. Not come across a Kollman before, if JEB has identified it correctly. Thanks for the info anyway, Spike.

Anyone have pictures of the guts - including the all-important phase/hall/power connections?

The mechanics are in good order, so I'm prepared to give it a bit of effort to get it running again - I've always been impressed with the torque and relatively low operating noise - and I have a spare 36V/20A Crystalyte controller, so might as well use it.


dermot

 

[Lyen]

I have the exact motor like yours. I actually have a dozen with multiple varieties. These motors are fun to play with especially on scooters. I currently have three ebike & one scooter using them. Let me know if you me more help.

Fechter has already post the method of procedure for extraction & modification.

See the link below:
http://endless-sphere.com/forums/viewtopic.php?f=16&t=11772

 

[dermot]

Ah, thanks for that, very helpful and exactly what I needed!

Came down with a bad case of gutrot so have put ebike repair aside for the moment.

dermot