Here is another post of Rod's with a different set up. MuMetal core (compared to the iron core). Still showing increase in speed over no coil, in most cases.
No load No coil and no side magnets 4106 RPM
No load with coil and no side magnets 4099 RPM
Full load 190 m AMPS at 6 volts 4145 RPM very quick acceleration.
Now here the bit that has got me in a spin. short the coil 4088 RPM I got no idea why.
It will require more testing and double checking so this may be wrong. But looks like it.
No load with coil and no side magnets 4099 RPM
Full load 190 m AMPS at 6 volts 4145 RPM very quick acceleration.
Now here the bit that has got me in a spin. short the coil 4088 RPM I got no idea why.
It will require more testing and double checking so this may be wrong. But looks like it.

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