Yaw bearing
By jmk, Section Wind Posted on Sat Apr 15, 2006 at 05:46:51 PM MST
Has anyone mounted the yaw bearing at the bottom instead of hanging it from the top?

I polished the the tower top and the inside of the yaw pipe so it would fit on with no play. I cut a 1" piece of yaw pipe and welded it to the tower, so when sliding the yaw pipe on it will stop when it hits the collar. I put a grease fitting in the yaw pipe. The tower goes all the way trough, and then sticks up about 11/2". The part that sticks up I drilled and taped a set screw. I am putting the tower on a big mogal of a hill, and it may lean down hill a bit. I didn't want the turbine to fall of. I cut anouther piece of yaw pipe 11/2" and welded it to the top of the yaw bearing with about 11/2" gap inbetween. This will leave room for the head of the set screw. Above that I plan on puting a removeable aluminum funel to route the wires down. Will this work? What are your opinions?

Yaw bearing | 5 comments (5 topical)

Re: Yaw bearing (3.00 / 0) (#1) by jmk on Sat Apr 15, 2006 at 12:48:31 PM MST

Here are some pictures. jmk

Re: Yaw bearing (3.00 / 0) (#2) by Walt on Sat Apr 15, 2006 at 04:49:12 PM MST

JMK Your generator looks really good. One think that you mentioned that your tower will not be totally vertical, that will be a problem. Your mill will not face into the wind and even if it will it won't furl properly. Having the pivot bearing on the bottom shouldn't be a problem I though IMO. What is the diameter of your magnet rotor and what diameter are your blades? Keep up the good work. Walt

Re: Yaw bearing (3.00 / 0) (#3) by Walt on Sat Apr 15, 2006 at 04:57:16 PM MST

Forget the question, I should have looked at your other post. Walt [ Parent ]

Re: Yaw bearing (3.00 / 0) (#4) by jmk on Sat Apr 15, 2006 at 08:18:14 PM MST

It will stand plumb when it is up. When I tilt it down to the ground I was first thinking it would be laying down hill. Now I think the hill will be ok if I tilt it down and stop when it is level. This will leave the rotor about 8' in the air. This way the blades and tail wont touch the ground. I am still glad I put the set screw in. I think the collar at the bottom will help hold the grease in. I wonder if I put wax at the bottom if it will even hold the grease in better? jmk

Re: Yaw bearing (3.00 / 0) (#5) by jmk on Sat Apr 15, 2006 at 10:36:22 PM MST

a couple more pics jmk

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