Original Posted By: "Ryan Michals"
Subject: Pietenpol-List: Ash supply
Pietenpol-List: Ash supply
Re: Pietenpol-List: Ash supply
Original Posted By: HVandervoo(at)aol.com
Subject: Re: Pietenpol-List: Ash supplyGuys,I bought white ash baseball bat blanks from Woodcraft.com, item # 125850. 3" x 3" x 40". $24.95 ea. Dan HelsperPoplar Grove, IL.________________________________________________________________________________
Subject: Re: Pietenpol-List: Ash supplyGuys,I bought white ash baseball bat blanks from Woodcraft.com, item # 125850. 3" x 3" x 40". $24.95 ea. Dan HelsperPoplar Grove, IL.________________________________________________________________________________
Re: Pietenpol-List: Ash supply
Original Posted By: "jimboyer(at)hughes.net"
Subject: Re: Pietenpol-List: Ash supplyTry Rockler:_http://www.rockler.com/product.cfm?page=2475_ (http://www.rockler.com/product.cfm?page=2475) Hans________________________________________________________________________________Date: Mon, 1 Oct 2007 19:24:10 +0000 (UTC)
Subject: Re: Pietenpol-List: Ash supplyTry Rockler:_http://www.rockler.com/product.cfm?page=2475_ (http://www.rockler.com/product.cfm?page=2475) Hans________________________________________________________________________________Date: Mon, 1 Oct 2007 19:24:10 +0000 (UTC)
Re: Pietenpol-List: Ash supply
Original Posted By: "jimboyer(at)hughes.net"
RE: Pietenpol-List: center section wing tank
Original Posted By: "Phillips, Jack"
I wanted to get a good sized tank in my wing center section since the fuselage is already built and there is no tank in it. by the shape of the wing (GN-1) I figured that I can get about .62 gallons per linear inch of tank between the spars. That means that to get a 15 gallon tank that it needs to be about 24" wide which is as wide as I can get it.The problem is that means only one rib on each side of the tank instead of the normal four ribs in the center section that the GN-1 plans show. I was thinking that I would run some 1/4" square stringers on the bottom sheet of plywood to stiffen it up so that it will still hold the correct undercambered shape. I will also put steel angle brackets mounted to the front and aft spar to support the weight of the tank. On the top I will do the plywood just in front of the forward spar and in back of the rear spar with a big removable sheet aluminum cover so I can get the tank out if I need to (or maybe just do all the plywood for now and I can cut it out and make the aluminum cover later if the tank ever needs to come out).Has anyone else done this before? Anyone see any problems with this? The center section will not be as strong as with the four evenly spaced ribs, but I don't know that is really a problem since each corner is braced by the jury struts and attached to the outer wing panels.Brian KrautEngineering Alternatives, Inc.www.engalt.com ________________________________________________________________________________Subject: RE: Pietenpol-List: center section wing tankDate: Mon, 1 Oct 2007 16:45:25 -0400
I wanted to get a good sized tank in my wing center section since the fuselage is already built and there is no tank in it. by the shape of the wing (GN-1) I figured that I can get about .62 gallons per linear inch of tank between the spars. That means that to get a 15 gallon tank that it needs to be about 24" wide which is as wide as I can get it.The problem is that means only one rib on each side of the tank instead of the normal four ribs in the center section that the GN-1 plans show. I was thinking that I would run some 1/4" square stringers on the bottom sheet of plywood to stiffen it up so that it will still hold the correct undercambered shape. I will also put steel angle brackets mounted to the front and aft spar to support the weight of the tank. On the top I will do the plywood just in front of the forward spar and in back of the rear spar with a big removable sheet aluminum cover so I can get the tank out if I need to (or maybe just do all the plywood for now and I can cut it out and make the aluminum cover later if the tank ever needs to come out).Has anyone else done this before? Anyone see any problems with this? The center section will not be as strong as with the four evenly spaced ribs, but I don't know that is really a problem since each corner is braced by the jury struts and attached to the outer wing panels.Brian KrautEngineering Alternatives, Inc.www.engalt.com ________________________________________________________________________________Subject: RE: Pietenpol-List: center section wing tankDate: Mon, 1 Oct 2007 16:45:25 -0400
RE: Pietenpol-List: center section wing tank
Original Posted By: owner-pietenpol-list-server(at)matronics.com
I really like the idea of the channel ribs. I have a shrinker and stretcherso I can bend up some channel and get the perfect camber on the top sheet.I am thinking that I can just rivet the top aluminum skin to the channels.I was also thinking of the straps to hold the tank. I thought of the steelbanding material used to hold stuff to pallets and also of nylon web typematerial.I guess that you could also use the channel ribs on the bottom skin andepoxy it to the thin plywood, but I still think that stringers running spanwise would also work good. Since the tank would be flat on the bottom youwould use 1/4" stringers near the center and much taller ones near the sparswhere there is not so much camber. I have no intentions of supporting thetank at all with them.Brian KrautEngineering Alternatives, Inc.www.engalt.com -----Original Message-----
I really like the idea of the channel ribs. I have a shrinker and stretcherso I can bend up some channel and get the perfect camber on the top sheet.I am thinking that I can just rivet the top aluminum skin to the channels.I was also thinking of the straps to hold the tank. I thought of the steelbanding material used to hold stuff to pallets and also of nylon web typematerial.I guess that you could also use the channel ribs on the bottom skin andepoxy it to the thin plywood, but I still think that stringers running spanwise would also work good. Since the tank would be flat on the bottom youwould use 1/4" stringers near the center and much taller ones near the sparswhere there is not so much camber. I have no intentions of supporting thetank at all with them.Brian KrautEngineering Alternatives, Inc.www.engalt.com -----Original Message-----
Pietenpol-List: Re: Ash supply
Original Posted By: Jeff Boatright
I have attached a portion of Table 4-3b from the Forest Products Laboratorys WoodHandbook which list some properties for the different Ash species.This is a good resource for wood information and FREE to download so the priceis right. It can be found at:http://www.fpl.fs.fed.us/documnts/fplgt ... tr113.htmI believe the Ash pieces in the floor are loaded in tension and compression fromthe wing struts and shear (perpendicular to the grain) from the landing gear.The big question is what is the important property to look at. Based on thepictures of Jeffs failed Ash cross brace, which appears to have failed in shearperpendicular to the grain, I think the Blue Ash looks like a good substitute.That said, probably the biggest contributor to the failure was the taperingof the ash piece from 1-inch to 3/4-inch causing a stress point.Chris--------Chris TracyWestCoastPiet.comRead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/ash_ ... ______Date: Mon, 1 Oct 2007 18:12:35 -0400
I have attached a portion of Table 4-3b from the Forest Products Laboratorys WoodHandbook which list some properties for the different Ash species.This is a good resource for wood information and FREE to download so the priceis right. It can be found at:http://www.fpl.fs.fed.us/documnts/fplgt ... tr113.htmI believe the Ash pieces in the floor are loaded in tension and compression fromthe wing struts and shear (perpendicular to the grain) from the landing gear.The big question is what is the important property to look at. Based on thepictures of Jeffs failed Ash cross brace, which appears to have failed in shearperpendicular to the grain, I think the Blue Ash looks like a good substitute.That said, probably the biggest contributor to the failure was the taperingof the ash piece from 1-inch to 3/4-inch causing a stress point.Chris--------Chris TracyWestCoastPiet.comRead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/ash_ ... ______Date: Mon, 1 Oct 2007 18:12:35 -0400
Pietenpol-List: Re: Ash supply
Original Posted By: "Catdesigns"
I got mine locally from this sawmill.http://www.bairdbros.com/They specialize in mouldings, but they also sell just the wood. They let you pickor they will ship to you. They have various thicknesses and high quality.If someone needed me to pick some out for them I could.Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
I got mine locally from this sawmill.http://www.bairdbros.com/They specialize in mouldings, but they also sell just the wood. They let you pickor they will ship to you. They have various thicknesses and high quality.If someone needed me to pick some out for them I could.Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Re: Pietenpol-List: Re: Ash supply
Original Posted By: "Jeff Boatright"
Jeff,Yes the taper is on the plans and also on my plane. After seeing your broken cross brace I am wondering if I should just make it 3/4-inch the whole way across.Chris TracySacramento, CaWebsite at http://www.WestCoastPiet.com----- Original Message -----
Jeff,Yes the taper is on the plans and also on my plane. After seeing your broken cross brace I am wondering if I should just make it 3/4-inch the whole way across.Chris TracySacramento, CaWebsite at http://www.WestCoastPiet.com----- Original Message -----
Re: Pietenpol-List:
Original Posted By: Gordon Bowen
No problems. I had a good long chat with the tech rep from West system. Secrect is to let the West epoxy fully cure for 10 days and sand with 220 grit paper lightly by hand, then apply varnish.Dick ----- Original Message -----
No problems. I had a good long chat with the tech rep from West system. Secrect is to let the West epoxy fully cure for 10 days and sand with 220 grit paper lightly by hand, then apply varnish.Dick ----- Original Message -----
Re: Pietenpol-List: Ash supply
Original Posted By:
Subject: Re: Pietenpol-List: Ash supplyJim,Does the Woodcraft store have wide planks of ash, say 9"? I need some to carve my prop. Dan HelsperPoplar Grove, IL.________________________________________________________________________________Date: Tue, 2 Oct 2007 13:25:12 -0400
Subject: Re: Pietenpol-List: Ash supplyJim,Does the Woodcraft store have wide planks of ash, say 9"? I need some to carve my prop. Dan HelsperPoplar Grove, IL.________________________________________________________________________________Date: Tue, 2 Oct 2007 13:25:12 -0400
> Re: Pietenpol-List: Ash supply
Original Posted By: "jimboyer(at)hughes.net"
Yes, I just purchased an 8'X8"X1.75 board and it looks great!!Jim Dallas>From: HelsperSew(at)aol.com>Reply-To: pietenpol-list(at)matronics.com>To: pietenpol-list(at)matronics.com>Subject: Re: Pietenpol-List: Ash supply>Date: Tue, 2 Oct 2007 05:24:55 EDT>>Jim,>Does the Woodcraft store have wide planks of ash, say 9"? I need some to>carve my prop.>>Dan Helsper>Poplar Grove, IL.>>________________________________________________________________________________Date: Tue, 2 Oct 2007 20:09:59 +0000 (UTC)
Yes, I just purchased an 8'X8"X1.75 board and it looks great!!Jim Dallas>From: HelsperSew(at)aol.com>Reply-To: pietenpol-list(at)matronics.com>To: pietenpol-list(at)matronics.com>Subject: Re: Pietenpol-List: Ash supply>Date: Tue, 2 Oct 2007 05:24:55 EDT>>Jim,>Does the Woodcraft store have wide planks of ash, say 9"? I need some to>carve my prop.>>Dan Helsper>Poplar Grove, IL.>>________________________________________________________________________________Date: Tue, 2 Oct 2007 20:09:59 +0000 (UTC)
Re: Pietenpol-List: Ash supply
Original Posted By: Rcaprd(at)aol.com
Subject: Re: Pietenpol-List: Ash supplyThanks Jim,I have an inquiry into Baird Bros. Hardwoods now, waiting for a reply. I will keep you posted. Dan HelsperPoplar Grove, IL.________________________________________________________________________________
Subject: Re: Pietenpol-List: Ash supplyThanks Jim,I have an inquiry into Baird Bros. Hardwoods now, waiting for a reply. I will keep you posted. Dan HelsperPoplar Grove, IL.________________________________________________________________________________
Re: Pietenpol-List: Ash supply
Original Posted By: "KMHeide, BA, CPO, FAAOP"
Subject: Re: Pietenpol-List: Ash supplyIn a message dated 10/2/2007 4:27:05 AM Central Daylight Time, HelsperSew(at)aol.com writes:Does the Woodcraft store have wide planks of ash, say 9"? I need some to carve my prop. Dan,I used Birch for my prop. The booklet called 'Propeller Making for the Amateur', by Eric Clutton, does NOT call out Ash as an acceptable wood for a prop,and I couldn't find any call out for any Prop Wood in the AC43.13-1A. Of course this does not mean Ash is not acceptable, it just means it is not very common.Chuck G.NX770CG________________________________________________________________________________Date: Tue, 2 Oct 2007 14:32:56 -0700 (PDT)
Subject: Re: Pietenpol-List: Ash supplyIn a message dated 10/2/2007 4:27:05 AM Central Daylight Time, HelsperSew(at)aol.com writes:Does the Woodcraft store have wide planks of ash, say 9"? I need some to carve my prop. Dan,I used Birch for my prop. The booklet called 'Propeller Making for the Amateur', by Eric Clutton, does NOT call out Ash as an acceptable wood for a prop,and I couldn't find any call out for any Prop Wood in the AC43.13-1A. Of course this does not mean Ash is not acceptable, it just means it is not very common.Chuck G.NX770CG________________________________________________________________________________Date: Tue, 2 Oct 2007 14:32:56 -0700 (PDT)