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gareywittich2000(at)yahoo
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 Posted: Mon Feb 16, 2009 6:29 pm Post subject: Elevator Horn Weldment - Installation |
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Greetings:
Ref - RV-8A:
When trying to attach the Elev Horn Weldment to the Elev Spar and Root Rib, the Weldment did NOT lay flat against the Spar and Root Rib simultaneously. Measured the Weldment's angle of 68 degrees. The angle formed by the Spar and Root Rib is 70 degrees. Inorder to get the Weldment angle to spread from 68 degrees to 70 degrees, MUCH force is needed. This does not seem right as too much stress would be applied to the Spar / Root Rib / Weldemnt combination.
Both Left and Right Weldments measure 68 degrees. (I have an OLDER Kit, so maybe this could be the problem where the NEWER Kit is 70 degrees.)
Has anybody else experienced this and how did you handle it ??
Appreciate your help !!!!
Garey Wittich Santa Monica, CA (310) 392-1682
Garey
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Brian Gawronski
Joined: 10 Jan 2006
Posts: 3
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| Posted: Tue Feb 17, 2009 4:46 pm Post subject: Elevator Horn Weldment - Installation |
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Garey,
I'm at the same point building the right elevator for my -7. Same parts as the -8 according to my Drawing 4PP Rev 2. As near as I can measure, the angle is 66 degrees on everything, meaning both left and right elev. horns, and the angle the spar makes to the root rib when mated to the skin. Are you measuring 70 degrees with the spar and root rib in position on the skin? It's the skin that sets the angle between the spar and the root rib.
To make the horn fit tight to both the spar and the root rib, I needed to file the end of the spar at the apex of the angle, as mentioned in the plans.
I have an early -7 kit, though I don't think much about the elevator has been changed since the -7 was introduced. As of yesterday, not all the parts have been pre-punched. How do I know? I just had to place an order to replace the tip ribs, and pre-punched E-604s and E-605s are not available from "the list".
Hope this helps.
Brian
[quote][b]
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