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Forum Index : Windmills : 6’ rotor
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97fishmt Regular Member  Joined: 19/04/2010 Location: United StatesPosts: 77 |
Hi A new rotor I finished for testing. 
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Gizmo Admin Group  Joined: 05/06/2004 Location: AustraliaPosts: 5124 |
Nice looking turbine! I like the finish, looks like you put a lot of work into it. Glenn The best time to plant a tree was twenty years ago, the second best time is right now. JAQ |
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KarlJ Guru  Joined: 19/05/2008 Location: AustraliaPosts: 1178 |
indeed very nice, now what about the rest of it? Luck favours the well prepared |
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| 97fishmt Regular Member Joined: 19/04/2010 Location: United StatesPosts: 77 |
The set up 
A mini bike disk brake disk for the hub a trailer stub axle into a shaft coupler onto the motor shaft. This is just what I do to make all the props I make fit onto all the different motors I get. The mini bike brake disk is 1" bore with key way and set screws. I weld the trailer spindle into the shaft coupler and drill into the motor shaft for fixing the coupler to the motor shaft. Also a castle nut with cotter pin on the front of the prop. So all the props have a 1" bore and the motors are usually 1 3/8" one is 1 1/4" but a different spindle on that one. I do this to get the prop out away form the tower. It adds 8 inches. |
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MacGyver Guru Joined: 12/05/2009 Location: United StatesPosts: 1329 |
97fishmt Looks great from here. Have you flown it yet? Any performance stats? . . . . . Mac Nothing difficult is ever easy! Perhaps better stated in the words of Morgan Freeman, "Where there is no struggle, there is no progress!" Copeville, Texas |
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GWatPE Senior Member  Joined: 01/09/2006 Location: AustraliaPosts: 2127 |
I would not mount the blade so far from the bearings. If you need to get tower clearance, then mount the alternator differently to achieve it. I see potential failure with this arrangement. I have the blades and rotor positioned between the bearings on my own mills. Gordon. become more energy aware |
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| Janne Senior Member Joined: 20/06/2008 Location: FinlandPosts: 121 |
The long shaft between the motor and the rotor also worries me. An easy fix would be to include a pillow block bearing right after the rotor. Add a second mount to the motor with rubber bushings, and all the problems aligning the bearing with the shaft are gone :) If at first you don't succeed, try again. My projects |
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| MacGyver Guru Joined: 12/05/2009 Location: United StatesPosts: 1329 |
[Quote=97fishmt]I do this to get the prop out away form the tower. On second look, the blades appear to be lifting sections, but if they are not very flexible, the chance of them "lifting" into the tower from apparent wind are not likely and if it were I, I'd move the rotor closer to the bearings. How heavy and how flexible are the blades? . . . . . Mac Nothing difficult is ever easy! Perhaps better stated in the words of Morgan Freeman, "Where there is no struggle, there is no progress!" Copeville, Texas |
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| 97fishmt Regular Member Joined: 19/04/2010 Location: United StatesPosts: 77 |
I guess I could do away with extending the shaft. I did it to my large servo motor long ago on a smaller platform to help with tower clearance. I made a larger mounting platform for my new tower, more offset for furling and moved the motor forward for tower clearance. It just works so well I did not change it. 
The bearings in these motors are huge 4 1/2 outer and 2 inches inner sealed roller bearings. Here is a look at the back bearing and the neo magnets. 
The motor in the snow is a 12 horse power motor. I think it can handle an 8 inch extension of its shaft. But as I get bigger with motors and props I agree not to have it hanging out there. Every thing so far is very lite. |
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