Thanx for sharing. Is the rotor spinning freely on the Castle Neu when you spin it with your fingers? Beeing able to disassemble the motor with screws is a big plus. The protection ring in front of the windings is a good idea for those of us trying to use screws with too much length.
And for those of you who want to compare the Castle motor with a Neu 1515 and Neu 1512 here are some pics while i dissassembled them.
The Neu rotor uses carbon rovings and the front of the motor is part of the can.
The backplate is only glued but the actual Neus do use screws too. Bigger Bearings on the Neu 1515.
No protection ring in front of the windings.
Neu 1512 rotor with broken shaft compared to a Neu 1515 rotor