Archie,
I just got off the phone with Darrel Harvin, The Hacker I got has the shaft out both ends of the can 13/16 each side of the can front and back. Included in the RSM package was another shaft that is not on the motor that is
2 3/4 inches long. Darrel said he has tapped the shaft out on Turnigy motors. Either I cut the shaft on the Motor or use collets for prop mount? I am leary of tapping the shaft out and putting the short one in so I can use the supplied prop adapter. But I seems like that is what is intended.