This is a trailer hub that has been machined on the back side to allow another flange to slide on with close tollerance. this flange will be in front of the back rotor. both front and back rotors center hole also are machined to fit tightly on the hub.also in the picture, is a cup washer that will be the base of the stator support bracket. the cup will fit over the end of the hub behind the back rotor to prevent water entering into the back hub bearing.(at least most of it).the other piece in the picture is just a hub that will fit over the front of the hub after everything is together and locked on with set screw, for drill motor testing.
This picture is kind of small, but I was just trying to show the pieces of sheetrock that I cut to fit, and placed them in the center hole of each coil.
Back rotor on,with flange,and also a shim that is ready to go between front rotor and front flange to have desired gap.the 5 thru bolts are 9/16 inch dia, and 6 & 1/2 Inches long.
side view showing how feed wires enter the stand pipe with removeable cover to prevent water from getting inside where the yaw bearings are. also shows the hyd. cylinder that prevents fast movement when it tilts back. also adjustable springs can be seen that will also help in the action. I will have to test and adjust the tilt on a test tower and tell more about it later.
Stator is mounted with sheetrock removed. this of course was a little nerve racking, not wanting to damage the wire. If I did this again, I think I would have greased sheet rock good,and I think it would have came out easier. I just hope it was worth the effort for cooling. ITs kind of neat tho, to see the mags behind how they line up in phase, and the others out of phase. I have to admit, I think there was a little room for improvement with line up prior to pouring the stator, but it seems to work fine.
front rotor on, using 5 jack bolts. I will be trying to use this one for 48 volts, the cut in at 48 in star, is 100 RPM. checking the resistance again, Im getting 1.3 ohms per phase. Im not sure if the 18 foot blades will be ok, but I guess I can aways shorten them if I want. The stator is 1/2 inch thick, and have the gap set at 11/16 inch. the mags are the 2 X1/2" discs, and are 13/16 apart. The coils are 60 turns two in hand #15 mag. wire.I brought out six wires for using Delta if needed. In delta, 48 volt cutin is 175 RPM.Any questions you have, I will try and answer. again thanking all you guys for your help in making this possible,but I still have alot to learn.
Great Fun Harrie