Pietenpol-List: Poplar

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RE: Pietenpol-List: Poplar

Post by matronics »

Original Posted By:=0A=0A=0A=0A=0A=0A=0A=0A=0Aowner-pietenpol-list-server(at)matronics.com
=0A=0A=0A =0A =0A=0A =0A=0A =0A=0A =0A=0A =0A=0A=0A=0A=0A=0A=0A=0ATom, =0A=0A =C2- =0A=0AHere are a few pics. Mine are simply=0Alaminated Hickory =0Awith no other frills. I can take some other close-ups if you want. The lift=0Astruts will also be Hickory ,=0Abut I won=99t make them until the wings are done and I can get some actual=0Ameasurements for length. I like the attachments that Douwe shows in the=0Aattachment. =0A=0A =C2- =0A=0AI know others have used spruce and combination=0Awith core materials =93 you should be fine. =0A=0A =C2- =0A=0A=0A=0AGary Boothe =0A=0ACool, Ca. =0A=0APietenpol =0A=0AWW Corvair Conversion,=0Amounted =0A=0ATail=0Adone,=C2-Fuselage=C2-on gear =0A=0A(15 ribs down) =0A=0A=0A=0A
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Pietenpol-List: Poplar

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Original Posted By: Owen Davies
Someone stated recently that they read somewhere that the FAA stated that Yellow Poplar was a direct replacement for Spruce. Darned if I could find it in the archives. The only source I can find is AC 43.13 which states that it is not a direct replacement due to it's slightly lower strength and shock resistance. I know it's properties are similar=2C but If who ever said this could speak up and let me know the source I'd appreciate it. Good Doug Fir is Impossible to get locally=2C but I found a source locally for for beautiful poplar (which isn't a poplar at all=2C it's a tulip tree. Go figure) I'd feel a lot more comfortable using it if I could find some supporting documentation.Doug DeverIn beautiful Stow Ohio =0A_________________________________________________________________=0AHotmail: Powerful Free email with security by Microsoft.=0A________________________________________________________________________________Date: Mon, 05 Oct 2009 06:00:03 -0400
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RE: Pietenpol-List: Poplar

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Original Posted By: owner-pietenpol-list-server(at)matronics.com
Doug,Here's a page out of 43.13. It shows that Poplar is not a 'direct'replacement, but very close. My airframe is all Poplar, Hickory struts, firspars.Gary BootheCool, Ca.PietenpolWW Corvair Conversion, mountedTail done, Fuselage on gear(15 ribs down.) _____
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RE: Pietenpol-List: Poplar

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Original Posted By: owner-pietenpol-list-server(at)matronics.com
Doug,Here's a page out of 43.13. It shows that Poplar is not a 'direct'replacement, but very close. My airframe is all Poplar, Hickory struts, firspars.Gary BootheCool, Ca.PietenpolWW Corvair Conversion, mountedTail done, Fuselage on gear(15 ribs down.) _____
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Re: Pietenpol-List: Poplar

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Original Posted By: Ryan Mueller
Subject: Re: Pietenpol-List: Poplar
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RE: Pietenpol-List: Poplar

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Original Posted By: gboothe5(at)comcast.net
Gary=2CI'm interested in your struts - do you have a photo? Are these the lift struts=2C cabanes=2C??? I plan on making mine of spruce with a ply core (lift=2C cabanes=2C etc).Thanks=2CTom B.
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RE: Pietenpol-List: Poplar

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Original Posted By: owner-pietenpol-list-server(at)matronics.com
Tom,Here are a few pics. Mine are simply laminated Hickory with no other frills.I can take some other close-ups if you want. The lift struts will also beHickory, but I won't make them until the wings are done and I can get someactual measurements for length. I like the attachments that Douwe shows inthe attachment.I know others have used spruce and combination with core materials - youshould be fine.Gary BootheCool, Ca.PietenpolWW Corvair Conversion, mountedTail done, Fuselage on gear(15 ribs down.) _____
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Pietenpol-List: Poplar

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Original Posted By: Tim Willis
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Re: Pietenpol-List: Poplar

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Original Posted By: Ameet Savant
Subject: Re: Pietenpol-List: Poplar
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Post by matronics »

Original Posted By: Owen Davies
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Re: Pietenpol-List: Poplar

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Original Posted By: Ameet Savant
Subject: Re: Pietenpol-List: Poplar
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Re: Pietenpol-List: Poplar

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Original Posted By: Ameet Savant
Subject: Re: Pietenpol-List: Poplar
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Re: Pietenpol-List: Poplar

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Original Posted By: Ryan Mueller
Subject: Re: Pietenpol-List: Poplar
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RE: Pietenpol-List: Poplar

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Original Posted By:> owen5819(at)comcast.net
I have heard on "The Last Original" the spruce longerons are 7/16 spruce and we all know that Mr Pietenpols last few aircraft were built with 3/4 laminated spars. I'd have to do some math=2C but 1" poplar might be a direct replacement for 3/4 spruce.Doug DeverIn beautiful Stow Ohio> Date: Mon=2C 5 Oct 2009 13:44:01 -0400
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Re: Pietenpol-List: Poplar

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Original Posted By: ameetsavant(at)gmail.com
Thanks Ameet you were the one and that was the publication mentioned.Doug DeverIn beautiful Stow OhioDate: Mon=2C 5 Oct 2009 12:39:35 -0500Subject: Re: Pietenpol-List: Poplar
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Re: Pietenpol-List: Poplar

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Original Posted By: ameetsavant(at)gmail.com
That was what I remembered reading.Doug DeverIn beautiful Stow OhioDate: Mon=2C 5 Oct 2009 13:07:10 -0500Subject: Re: Pietenpol-List: Poplar
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RE: Pietenpol-List: Poplar

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Original Posted By: "Bill Church"
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RE: Pietenpol-List: Poplar

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Original Posted By: eng(at)canadianrogers.com
Should have been 15/16=2C but I stand corrected at 7/8. Anyway my point was they were less than 1". Doing some SWAG engineering off the top of my head I would say that poplar would be OK.Doug DeverIn beautiful Stow OhioSubject: RE: Pietenpol-List: PoplarDate: Mon=2C 5 Oct 2009 17:50:13 -0400
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Re: Pietenpol-List: Poplar

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Original Posted By: Robert Ray
Subject: Re: Pietenpol-List: Poplar
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Re: Pietenpol-List: Poplar

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Original Posted By: Robert Ray
Subject: Re: Pietenpol-List: Poplar
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Re: Pietenpol-List: Re: Poplar

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Original Posted By: Robert Ray
Alright Gutterboy! :-) Maybe this will help. I've seen this stuff but can't remember where, exactly. I'll find when the time comes.Clif Clif, Thanks for the picture! You lost me with the "rubber T section" and "the wedgies", though. You say "wedgy" and my mind goes to a completely different place! Gary Boothe________________________________________________________________________________Date: Tue, 6 Oct 2009 02:36:09 -0400Subject: Re: Pietenpol-List: Re: Poplar
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Re: Pietenpol-List: Re: Poplar

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Original Posted By: rray032003(at)gmail.com
FAA lists min of 6/inDoug DeverIn beautiful Stow OhioDate: Tue=2C 6 Oct 2009 02:36:09 -0400Subject: Re: Pietenpol-List: Re: Poplar
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> RE: Pietenpol-List: Poplar

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Original Posted By:> eng(at)canadianrogers.com
And not the same thing as what's generally referred to as "Western Poplar", which i believe is actually Aspen, a significantly inferior wood.Kip GardnerOn Oct 5, 2009, at 10:35 PM, Robert Ray wrote:> Tulip tree, tulip poplar and yellow poplar are all the same tree.>> On Mon, Oct 5, 2009 at 10:33 PM, Robert Ray > wrote:> It's strength is the same it's shock resistance difference is so small> that it shouldn't be a problem, there's a test chart on the freight > harbor's> catalog where they drop a hammer weight and shock test different> woods, I don't remember the exact numbers I don't have it here with> me but the difference is like the Spruce fails when hammer is dropped> from 41 inches and the poplar fails at 40 inches.> Another advantage that is only slight is poplar is slightly more > perishable.> There is also an independent test where a person test both woods> along with pine hemlock etc and he test conclude the poplar is > stronger> than spruce, you'll have to search and find it but the web site is > out there,> I also don't think that the nail holding ability of poplar isn't > quite as good.> I have seen older houses that were built out of poplar still standing> and the newer ones blown away after a tornado come through.> Of course the older house was boxed in with diagonal boards of poplar.> Where as the new ones had particule board.>>> Russell>> On Mon, Oct 5, 2009 at 6:32 PM, Doug Dever > wrote:> Should have been 15/16, but I stand corrected at 7/8. Anyway my > point was they were less than 1". Doing some SWAG engineering off > the top of my head I would say that poplar would be OK.>>> Doug Dever> In beautiful Stow Ohio>>> Subject: RE: Pietenpol-List: Poplar> Date: Mon, 5 Oct 2009 17:50:13 -0400
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Re: Pietenpol-List: Poplar;perfect

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Original Posted By: Robert Ray
Subject: Re: Pietenpol-List: Poplar;perfect
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RE: Pietenpol-List: Poplar

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Original Posted By:
Doug=2CHere=92s a page out of 43.13. It showsthat Poplar is not a =91direct=92 replacement=2C but very close. My airframeis all Poplar=2C Hickory struts=2C fir spars.Gary BootheCool=2C Ca.PietenpolWW Corvair Conversion=2CmountedTaildone=2C Fuselage on gear(15 ribs down=85)
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> RE: Pietenpol-List: Poplar

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Original Posted By:> eng(at)canadianrogers.com
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>> RE: Pietenpol-List: Poplar

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Original Posted By:>> eng(at)canadianrogers.com
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=0A RE: Pietenpol-List: Poplar

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Original Posted By:=0A=0A=0A=0A=0A=0A=0A=0A=0A=0Aowner-pietenpol-list-server(at)matronics.co
=0AHere=99s a page out of 43.13. It shows=0Athat Poplar is not a =98direct=99 replacement, but very close. My=0Aairframe is all Poplar, Hickory =0Astruts, fir spars. =0A=0A=C2- =0A=0A=0A=0AGary Boothe =0A=0ACool, Ca. =0A=0APietenpol =0A=0AWW Corvair Conversion, mounted =0A=0ATail done,=C2-Fuselage=C2-on gear =0A=0A(15 ribs down) =0A=0A=0A
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> RE: Pietenpol-List: Poplar

Post by matronics »

Original Posted By:> ** owner-pietenpol-list-server(at)matronics.com [mailto:
>> Tom,>>> Here are a few pics. Mine are simply laminated Hickory with no other> frills. I can take some other close-ups if you want. The lift struts will> also be Hickory , but I won=92t make them until the wings are done and I can> get some actual measurements for length. I like the attachments that Douwe> shows in the attachment.>>> I know others have used spruce and combination with core materials ' you> should be fine.>>> Gary Boothe>> Cool, Ca.>> Pietenpol>> WW Corvair Conversion, mounted>> Tail done, Fuselage on gear>> (15 ribs down=85)> ------------------------------>
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> RE: Pietenpol-List: Poplar

Post by matronics »

Original Posted By:> ** owner-pietenpol-list-server(at)matronics.com [mailto:
>> Doug,>>> Here=92s a page out of 43.13. It shows that Poplar is not a =91direct=92> replacement, but very close. My airframe is all Poplar, Hickory struts, fir> spars.>>> Gary Boothe>> Cool, Ca.>> Pietenpol>> WW Corvair Conversion, mounted>> Tail done, Fuselage on gear>> (15 ribs down=85)> ------------------------------>
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