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Del
Junior Member
United Kingdom
368 Posts |
 Posted - 14/01/2008 : 09:52:29
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Hi all,
After what I thought was a cracking idea to use a big castor bearing as a jaw bearing it wore slightly and allowed some play in the bearing that could not be adjusted. I suppose I could have drilled though the central rivet and replaced it with a big nut and bolt to allow for some adjustment but I decided that the bearing was simply not robust enough for long term use and wind abuse.
I've since bought a flange bearing and got some 20mm bar and hey presto we have a VERY strong yaw bearing. The bearing did initially swivel and tilt in its carrier so it needed some welding so that it remained in a fixed axis. The 20mm bar will have some square section tube slipped over it and tacked into place and then that slips tightly into a scaffold pole.
Cheers
Del.
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speo
Junior Member
Canada
109 Posts |
Posted - 14/01/2008 : 21:32:50
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Del, how are you going to bring the cables down if that's a bar, not a pipe ?
Speo
www.windpulse.com |
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Del
Junior Member
United Kingdom
368 Posts |
Posted - 14/01/2008 : 22:38:43
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Hi Speo,
I tend to bring the cables down alongside the pipe and leave a bit of slack at the top, enough for the turbine to twist two or three revolutions and amazingly my turbine has never needed untwisting.
Cheers
Del. |
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agrifabs
New Member
United Kingdom
76 Posts |
Posted - 15/01/2008 : 17:28:42
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i agree with del, i brought my cables down the outside of my pipe and cable tied it so there was enough 'slack' so the cable doesnt get caught up,
del - what welding did you do to the yaw bearing so the 'play' is eliminated? i am thinking of doing this particular yaw bearing on my next project, is that your 'kit' for sale on ebay? |
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agrifabs
New Member
United Kingdom
76 Posts |
Posted - 15/01/2008 : 17:33:51
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i agree with del, i brought my cables down the outside of my pipe and cable tied it so there was enough 'slack' so the cable doesnt get caught up,
del - what welding did you do to the yaw bearing so the 'play' is eliminated? i am thinking of doing this particular yaw bearing on my next project, is that your 'kit' for sale on ebay? |
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Del
Junior Member
United Kingdom
368 Posts |
Posted - 15/01/2008 : 19:00:19
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Thanks agrifabs,
I do like the neatness if a cable running down the inside of a hollow tube but I'd be concerned that it would become excessively twisted, wheras cable on the ouside doesn't seem to and even if it did it would be easy to unwind a couple of turns.
There's no 'play' in the bearing. The bearing is designed to swivel at all angles in the bearing carrier so it needs to be welded so that it it remains at a fixed 90 degrees. If you see my pic below you can see the underside of the bearing and the two gaps that i filled with weld to hold the bearing securely in position. I also filled the carriers grease nipple hole with weld.
And yes, that is my kit on ebay. I'm having a bit of a clearout so expect more stuff in next few weeks. And if you need any flange bearings or pillow bearings just let me know - I've got a big box full of them. I've also got a giant DC motor - anybody any ideas what to do with it. Maybe a generator for a water wheel?
Cheers
Del. |
Edited by - Del on 15/01/2008 19:03:35 |
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New yaw bearing
