updated January 1, 2004
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| Controls updated January 1, 2004 |
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| Originally, not being a welder nor having ready access to one, I was just going to purchase my dual control assembly. However, after discovering the price of a ready made assembly (ouch!) and looking at a few builder's sites, I decided to figure out a way to build my own. I spent a considerable amount of time studying Mark Langford's design. I really liked it so I copied most of his design. I did drop back to 1.0" OD Tubing for the body and 0.75" OD tubing for the "arms" per his advice and it is plenty strong enough. The picture on the left shows the jig I made in order to transfer it to the welding shop. I also liked the pipe clamp pivot arm for it's ease to adjust. I went the route of sandwiching the push tube with two pieces of alum, but now looking at it, Mark's single arm would be plenty and less complex. | ||||||||||||||||
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| Here is the welded product. Also, I am going to use 2 pieces of left over spruce epoxied to the rear side of the main spar and the some 1" nylon bar as the bushing with two 6.5" AN3 bolts going through the entire assemby and spar webbing to 0.25" alum backing plates. After removing the retract gear, I didn't want to put any more holes in the Spars. The photo on the right shows the test fit. | ||||||||||||||||
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| Below are the backer plates made from 0.25" aluminum to avoid drilling more holes through the spar caps.. | ||||||||||||||||
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