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RV-6A - GBC
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Date: 2-28-2007
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Number of Hours: 2.50
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Manual Reference:
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Brief Description: Rudder, final rivets
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Finally, took the plunge and riveted the rudder closed. Vans tech support responded about the 'oil can' effect ("no big deal"), and the solutions, if desired. I had suggested that a light fluting on a couple of stiffeners, or a 'wedge of foam RTV'ed in-place' might be options. They said it was ok, if desired. There was no answer on the sequence of riveting in order to minimize the effect.
In the end, I did flute a few stiffeners slightly which caused a slight bowing on the surface of the rudder skin, on the 'slack' side. I decided against the foam wedge. But, when it came time to close up, I laid the rudder in the workbench with a carpet pad under the middle of the 'tight' side and placed about 4 lbs of wt on each end of to preload a little curvature to tighten the slack side. Then I riveted from the center of the main spar (VS-802PP?) to the top and bottom, and from the T/E to the L/E (corners) of the ribs. When it was done, the oil can effect was not found.
The L/E was created in the usual method (rolled on a broomstick and wrapped with duct tape). The 0.016 skin is fairly easy to roll, and the pre-punched holes were a big help - deburred, dimpled, pulled it back in with more duct tape, clecoed, and then riveted... except for the top section ... seems that I was short a few blind rivets in the kit. Another order to get that. Expecting some other supplies tomorrow.
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95% done
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L/E blind rivets
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T/E wrinkle - gone
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