this is probably just me being foolish, but I really can't figure out how to convert RF to EU and Vice-Versa using the Mechanical Multiblock structure. I think I've tried everything which is readily obvious from reading the book.

@malte0811 why this is still open?

What have you tried? My standard setup is
Electrodes-coil-<some part that doesn't interact with electricity>-coil-commutator.
The setup works, I just tested it. The speed threshold is pretty low, 4 radians/second, so that should not cause issues.

Alright, it was just me being foolish. I was trying it with the commutator and electrodes swapped. thanks for the help!

Thanks, I thought the commutator was the EU version of the coils, but it's the EU version of the electrodes.