Creative Ways to Make Motor Mounts from Water Bottle
I moved to India and found this thread.
Mount the motor to a water botthe cap. Glue the top part of the bottle (with the threads) to the foamie. When you want to try a different motor, just use another cap with the second motor mounted, unscrew the old motor, screw the new one and you're done!
I reversed engineered ny Champ. With all the repairs and frequent disassembly, it's gone from a factory RTF to a nearly scratch buil foamie: