these are 4pole motors actually...
as mentioned above, slotted stator paired with a multi-pole rotor [armoured via kevlar shell] is the 'basic configuration' for plettenberg car motors...
10-15 degrees of advanced timing will lead to smoother start-ups and enhanced power [for this particular genre of motors]. when combined with a switching rate of 13-19khz, it will also yield the best possible efficiency.
the rotor diameter is 22mm if i recall correctly.
