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skrabekk(at)charter.net Guest
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Posted: Wed Sep 09, 2015 7:07 pm Post subject: tube caulk |
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I believe the reason for caulking the rib tube ends is to prevent rivet hole drillings& chips and rivet ball ends from vibrating down to the leading edge of the wing where they get stuck between the fabric and leading edge tube.They will eventually cut through the fabric. Drilling the holes before covering with the fabric will make this unnecessary Jerry
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WhiskeyVictor36(at)aol.co Guest
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Posted: Fri Sep 11, 2015 6:52 pm Post subject: tube caulk |
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You are right. Drilling the holes first would eliminate the chips, but some of the rivet ball ends would still be dropping out. Also, after the fabric is on, the fittings that support the folded wings need to be attached, and those rivet ball ends also have a chance to drop out and roll around inside the wing. I read once that Pazmany used epoxy on the ends of the rivets and that may hold the ball ends in place, but he did say it was a sticky mess to deal with.
Bill Varnes
FireStar
Audubon, NJ
In a message dated 9/9/2015 11:07:26 P.M. Eastern Daylight Time, skrabekk(at)charter.net writes:
Quote: | I believe the reason for caulking the rib tube ends is to prevent rivet hole drillings& chips and rivet ball ends from vibrating down to the leading edge of the wing where they get stuck between the fabric and leading edge tube.They will eventually cut through the fabric. Drilling the holes before covering with the fabric will make this unnecessary Jerry
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