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Piggot 8 foot turbine - yaw bearing | 4 comments (4 topical, editorial)

Re: Piggot 8 foot turbine - yaw bearing (3.00 / 0) (#1)
by electronbaby (roy<at>windsine.org) on Sun Sep 7th, 2008 at 12:59:47 PM MST
(User Info) http://www.windsine.org

Yes, it is a concern of many. I guess it is done this way for simplicity, but what you have done will certainly work. It is a possibility that you can now decrease the tail surface area SLIGHTLY. Basically what you have done is decrease the wear and tear on the yaw bushing, while also decreasing the force required to yaw the machine. Pay close attention to what your furling speed is, if you leave all the measurements the same, and use your yaw bearing, it might furl slightly earlier than the plans state.

Just a side note. :-)

Looks good. I have used a stainless lower bushing turned down to fit the ID of the tower stub. On top of this I use a greased teflon bushing. The turbine would sit on the teflon bushing, and although not as refined as a bearing, it will last a VERY long time. There are holes drilled in both the stainless bushing, and the teflon to facilitate the passing of the feed line down through the tower stub as normal.
Have Fun!! RoyR KB2UHF

Re: Piggot 8 foot turbine - yaw bearing (3.00 / 0) (#2)
by Flux on Sun Sep 7th, 2008 at 02:21:12 PM MST
(User Info)

For those with the facilities this is a good idea, it will last longer, it will not in fact work any better and the tail may wag a bit more but it will be fine.

I wouldn't mess with the tail area, you will find that it runs at a fair angle to the wind now and if you reduce tail area it will make it worse.

These machines are kept simple so that the majority can build them without full engineering facilities, you can improve some things if you are better equipped.

Flux

[ Parent ]

Piggot 8 foot turbine - yaw bearing | 4 comments (4 topical, 0 editorial)

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