Original Posted By: "Carl Loar"
Subject: Re: Pietenpol-List: leading ddges>>In a message dated 12/9/00 10:48:29 PM Central Standard Time,>horzpool(at)goldengate.net writes:>>I've seen several leading / trailing edges made out of aluminum, andbecause>of the difference in thermal expansion rate of wood and aluminum, thefabric>material bunches up, after the wing is done.>Chuck G.Don't know about that. I used alumunum for the leading & trailing edges &did not have that problem.MIke B Piet N687MB ( Mr Sam )________________________________________________________________________________
Pietenpol-List: leading ddges
Re: Pietenpol-List: leading ddges
Original Posted By: Christian Bobka
Subject: Re: Pietenpol-List: leading ddges>>In a message dated 12/9/00 10:48:29 PM Central Standard Time,>horzpool(at)goldengate.net writes:>>I've seen several leading / trailing edges made out of aluminum, andbecause>of the difference in thermal expansion rate of wood and aluminum, thefabric>material bunches up, after the wing is done.>Chuck G.Don't know about that. I used alumunum for the leading & trailing edges &did not have that problem.MIke B Piet N687MB ( Mr Sam )________________________________________________________________________________Date: Sun, 10 Dec 2000 10:37:55 -0500
Subject: Re: Pietenpol-List: leading ddges>>In a message dated 12/9/00 10:48:29 PM Central Standard Time,>horzpool(at)goldengate.net writes:>>I've seen several leading / trailing edges made out of aluminum, andbecause>of the difference in thermal expansion rate of wood and aluminum, thefabric>material bunches up, after the wing is done.>Chuck G.Don't know about that. I used alumunum for the leading & trailing edges &did not have that problem.MIke B Piet N687MB ( Mr Sam )________________________________________________________________________________Date: Sun, 10 Dec 2000 10:37:55 -0500
Pietenpol-List: leading ddges
Original Posted By: Rcaprd(at)aol.com
I installed my leading edge stock today ( one piece wing ) which brings thenext question. Plywood or aluminum leading edge coating? Plywood would beeasier to work with. Aluminum would have to be bent around the leadingedge...Does anyone have an experienced view?ThanksDick Navratil________________________________________________________________________________
I installed my leading edge stock today ( one piece wing ) which brings thenext question. Plywood or aluminum leading edge coating? Plywood would beeasier to work with. Aluminum would have to be bent around the leadingedge...Does anyone have an experienced view?ThanksDick Navratil________________________________________________________________________________
Re: Pietenpol-List: leading ddges
Original Posted By: "Michael Brusilow"
Subject: Re: Pietenpol-List: leading ddgesIn a message dated 12/9/00 10:48:29 PM Central Standard Time, horzpool(at)goldengate.net writes:>I built the one piece wing, and I used 1/16" plywood. Worked just fine. I made butt joints at rib junctures. The plans call out for a 9" width, but I made it 10" width, in order to extend aft, just past that gusset that is behind the front spar. I terminated the forward edge of the plywood on top of the leading edge (about 1/2" of epoxy bond) and feathered the plywood into the leading edge. After the plywood was on, I was concerned about how the aft edge of the plywood would blend into the wing, but when the fabric was on, and shrunk down, it pulled down and blended the aft edge of the plywood nicely into the airfoil. I've seen several leading / trailing edges made out of aluminum, and because of the difference in thermal expansion rate of wood and aluminum, the fabric material bunches up, after the wing is done.Chuck G.________________________________________________________________________________
Subject: Re: Pietenpol-List: leading ddgesIn a message dated 12/9/00 10:48:29 PM Central Standard Time, horzpool(at)goldengate.net writes:>I built the one piece wing, and I used 1/16" plywood. Worked just fine. I made butt joints at rib junctures. The plans call out for a 9" width, but I made it 10" width, in order to extend aft, just past that gusset that is behind the front spar. I terminated the forward edge of the plywood on top of the leading edge (about 1/2" of epoxy bond) and feathered the plywood into the leading edge. After the plywood was on, I was concerned about how the aft edge of the plywood would blend into the wing, but when the fabric was on, and shrunk down, it pulled down and blended the aft edge of the plywood nicely into the airfoil. I've seen several leading / trailing edges made out of aluminum, and because of the difference in thermal expansion rate of wood and aluminum, the fabric material bunches up, after the wing is done.Chuck G.________________________________________________________________________________
Re: Pietenpol-List: leading ddges
Original Posted By: Rcaprd(at)aol.com
-----Original Message-----
-----Original Message-----
RE: Pietenpol-List: leading ddges
Original Posted By: owner-pietenpol-list-server(at)matronics.com
That's the first time I've heard about the aluminum bunching on theleading edge. I was thinking that might be the way to go as you canpurchase leading edge rolls of aluminum from Aircraft Spruce and nothave any breaks from end to end. Maybe the long span on the one piecewing might have something to do with that as opposed to the three piece.I'll add this question on here,,,, what did most people use for theleading edge and trailing edge wood?Carl-----Original Message-----
That's the first time I've heard about the aluminum bunching on theleading edge. I was thinking that might be the way to go as you canpurchase leading edge rolls of aluminum from Aircraft Spruce and nothave any breaks from end to end. Maybe the long span on the one piecewing might have something to do with that as opposed to the three piece.I'll add this question on here,,,, what did most people use for theleading edge and trailing edge wood?Carl-----Original Message-----
Re: Pietenpol-List: leading ddges
Original Posted By: "Daryl Bortel"
Subject: Re: Pietenpol-List: leading ddgesIn a message dated 12/10/00 1:11:53 AM Central Standard Time, Rcaprd(at)aol.com writes:> Specifically, I saw this on the trailing edge of a Travel Air, here in Wichita , and that is how the owner explained it to me. The material was wrinkled at the juncture of the trailing edge, and each rib. I've seen this before, on some other plane, but I don't remember what type plane it was. F.Y.I. They had their 75 Year Aniversery of the Travel Air here, in October, and 10 or 12 planes showed up. What an awsome sight and sound it was, to see them arrive in formation, in groups of three or four !! Lots of history in the Travel Air. It began production when Walter Beech, Clyde Cessna, and Loyd Steerman were partners. Wichita has since became known as the 'Aviation Capital of the World'.Chuck G.________________________________________________________________________________
Subject: Re: Pietenpol-List: leading ddgesIn a message dated 12/10/00 1:11:53 AM Central Standard Time, Rcaprd(at)aol.com writes:> Specifically, I saw this on the trailing edge of a Travel Air, here in Wichita , and that is how the owner explained it to me. The material was wrinkled at the juncture of the trailing edge, and each rib. I've seen this before, on some other plane, but I don't remember what type plane it was. F.Y.I. They had their 75 Year Aniversery of the Travel Air here, in October, and 10 or 12 planes showed up. What an awsome sight and sound it was, to see them arrive in formation, in groups of three or four !! Lots of history in the Travel Air. It began production when Walter Beech, Clyde Cessna, and Loyd Steerman were partners. Wichita has since became known as the 'Aviation Capital of the World'.Chuck G.________________________________________________________________________________
Re: Pietenpol-List: leading ddges
Original Posted By: Rcaprd(at)aol.com
Chuck, I was one of the Travel Airs there, but not with a wrinkled trailingedge. When you see that, it is a sure bet that the builder did not fullysnug up the trailing edge material. I always use cargo straps to tightenthem down and embed the trailing edge in eopxy at each rib so that it cannotmove when the fabric tightens. By the way, Travel Airs have (or aresupposed to have) a 1/4" tubing trailing edge which sometimes "scallops"between the ribs if the fabric is too tight. Mine is still straight(crossed fingers) but I put lots of work into it. I spoke to a couple ofPiet builders while I was at Wichita, in the large delivery hangar one nightwhile I was wiping oil, was that you?>They had their 75 Year Aniversery of the Travel Air here, in> October, and 10 or 12 planes showed up. What an awsome sight and soundit> was, to see them arrive in formation, in groups of three or four !! Lotsof> history in the Travel Air. It began production when Walter Beech, Clyde> Cessna, and Loyd Steerman were partners. Wichita has since became knownas> the 'Aviation Capital of the World'.>> Chuck G.>>________________________________________________________________________________
Chuck, I was one of the Travel Airs there, but not with a wrinkled trailingedge. When you see that, it is a sure bet that the builder did not fullysnug up the trailing edge material. I always use cargo straps to tightenthem down and embed the trailing edge in eopxy at each rib so that it cannotmove when the fabric tightens. By the way, Travel Airs have (or aresupposed to have) a 1/4" tubing trailing edge which sometimes "scallops"between the ribs if the fabric is too tight. Mine is still straight(crossed fingers) but I put lots of work into it. I spoke to a couple ofPiet builders while I was at Wichita, in the large delivery hangar one nightwhile I was wiping oil, was that you?>They had their 75 Year Aniversery of the Travel Air here, in> October, and 10 or 12 planes showed up. What an awsome sight and soundit> was, to see them arrive in formation, in groups of three or four !! Lotsof> history in the Travel Air. It began production when Walter Beech, Clyde> Cessna, and Loyd Steerman were partners. Wichita has since became knownas> the 'Aviation Capital of the World'.>> Chuck G.>>________________________________________________________________________________