Quote from: Jimboot on July 23, 2015, 10:07:57 PM
Good observation for the tuning. Just one stator coil? Not shorting the other coil? Probes across the gen coil?
Thanks
Grum

Sorry I was referring to Grums vid.

I'll probably put up a vid later but "Tipping" or angling the brushes definitely improves output. I worked what the heck I was doing last night. I think I was taking the AC from one coil and sending it back as DC into the other one? Anyway it drops current draw by 300ma and increases output.

Quote from: shylo on July 23, 2015, 05:50:44 PM
Hi Grum, Are your field coils stock or did you rewind them?
You were powering the little light with the field windings correct?
If so was it just one or both coils?
I have the identical motor as yours I believe , but the output from the field coils is small.
I also have another motor where I replaced the field coil stator with a PM can ,with added collector brushes.
I can draw off the brushes but I can't combine them or feed them back to the supply.
As JimBoot stated you can power the motor with various  brush locations.
I am still working on shorting, the lenz effect needs to assist I think.
Thanks artv

Dear shylo.

The motor in the videos is a 1.8 Kw @ 240vac with stock windings. Removed from a VAX vacuum cleaner.

The incandescent bulb is a 12 V  1.8 W and was directly connected to one field coil only.

The motor field coils have an approximate inductance of 6.5 mH each. Each armature segment has an inductance of approximately 1.8 mH.

Cheers Grum.

One thing to mention if you do rewind:

Make generator coil from IRON wire. Then observe how rotor's copper (diamagnetic) coil interact with generator iron (magnetic) coil...
The opposite properties on coils is a must for best effect.

Here you go, not 100% sure what's going on here. http://youtu.be/ymKWbcOeSSg