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wb2ssj(at)frontiernet.net Guest
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Posted: Tue Dec 02, 2008 4:03 pm Post subject: elevator trim tab |
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I have noticed now that a few people have cut the elevator out for a trim tab. How many square inches did you make the tab? If you have flown with it yet, and is it the size you consider right? Is it enough trim and can you override it if its in a full up configuration? I have mine at 46 square inches and have not flown. Tex
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selwyn
Joined: 12 Mar 2008 Posts: 102 Location: Australia
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Posted: Wed Dec 03, 2008 3:35 pm Post subject: Re: elevator trim tab |
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Mine is 51.2 sq inches. I arrived at that by keeping the 20" width and increasing the depth to 65mm from the factory 50. (Sorry about the mixed units, I normally work in mm but I grew up with inches and this project has got me back to working in both.)
I increased the depth in part to compensate for the shorter moment arm of the tab when inset and partly to get hopefully a bit more effectiveness. I don't like the idea of not being able to trim the plane in approach configuration.
I have not flown yet.
If anyone is interested in how I did it my build log is http://www.recreationalflying.com.au/forum/blogs/seal/
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_________________ Cheers, Selwyn
Kit 66 VH-ELZ |
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