brandon just pm'd me to ask me a question about the rotation... it occured to me that i've never ran this on an E50, just on a ZA50 so i cant say for sure that it works. Worst case i think flipping the stator over on the 2-bolts that secure it to the base plate, it should have enough clearance to do that.
I have all the parts to try this sometime, a stock E50 and a full 4 coil getup. not sure when i'd get around to it but i am definitely curious now.
i switched my flat track race bike to KTM inner rotor but it wouldn't be too had to throw the A55 junk on there.