hovered my scale project today. without scale body. just in the testing phases. so far 2 failures. my cascade type tail rotor failed on the bench due to an out of balance issue (need to make another shaft) and then during a hover the belt drive gear (plastic) melted during one of the hovers, luckily i was mere inches off teh ground. i found one that was aluminum and replaced the gears. its better but the belt got trashed in the failure so i need to replace the belt. sheesh what a pain. a 5 blade head sure sounds awesome at speed. after i make another shaft for the tail it should be better. it did not have enough authority on the tail.