FMMMD107

These spinners, for attaching the scale 3-bladed props to the B-25 motors are good in most respects, but there are two related issues with them. First, they can only be hand-tightened, using a wrench or pliers on them would destroy the plastic. Second, they are both right-hand threads, so the set on the reverse rotation motor is very likely to loosen during service. This could have been fixed with a little extra cost by making the thread on the reverse rotation side left=handed. It wouldn't have been very hard for FMS to have right-hand or left hand thread shafts for their motors, and right-hand or left-hand thread for the spinners.