I want to thank russp, TomW, Stephent, ghurd, alancorey & fungus For your very helpful answers to my questions on ceiling fan conversion. It seems a bit to complicated for a first project so I think I will start with a small induction motor from a copy machine from which I got a multitude of parts.
In the meantime my ceiling fan conversion will continue to spin on the 10 ft pole testing its ability to not fly apart not doing any work. I have already made some modifications beefing up and installing a air brake to keep it together. The air brake can be seen in the picture below.
Also in this next picture can be seen the spiral I have painted on the blades to estimate the rpm.
It takes 8 turns for the spiral line to go from the tip of a blade to the center. So I just count the number of spirals per minute and multiply by 8 and I have the rpm.
Probably this next question should have been put on a new thread but hope this is ok to ask it here. This induction motor is shown below. If instead of turning down the rotor, replace it with the shaft shown beside it and turning down the other end to fit the bearing, would this steel shaft be suitable for cementing and incasing in epoxy? Or must it be made of a non magnetic material such as aluminum like the original rotor?
It just happens that this other shaft is the same size as the orig. rotor would be if all the segments were machined off. Also the turned down end is the same size as the motor bearing shaft.
This picture is the 4 pole stator:
Thank you all for being so helpful.
AT
P.S. Just as I was finishing this reply up my neighbor brought my fan windmill over to me in peaces. The nut on the short threaded mounting end of the motor worked loose and it fell to the ground and broke all the fan mounts. Looks like I will be looking for another ceiling fan. "Bummer"