Adding a flywheel to the RPC may help. The RPC is depending on stored rotating energy and magnetic field to carry over to the extra phase. The flywheel won't help store any magnetic field, but will keep the armature rolling at speed for a little longer.
Weston Bye - Author, The Mechatronist column, Digital Machinist magazine
~Practitioner of the Electromechanical Arts~
Theory & Practice-
Theory is when you know something but it doesn't work.
Practice is when something works but you don't know why.
It it dangerous to combine Theory & Practice;
nothing works and you don't know why.