I have a ROAR rep., puppet whatever one likes to call these technology enders fools (hope that made sense, but in Portuguese it did
) saying 4 and 6 pole motors are ROAR legal. It's in RCTech's forum and I also have a screen shot of the post. It seems to me if one wants to make a 540 or 550 sized motor with a 4, 6 or 8 pole rotors and a stator with more then 12 slots will basically only have the bashers for support, but this also proves how ROAR only makes the rules to help a few companies and they will keep our technology from getting better.