Original Posted By: "jarheadpilot82"
Does anyone know how to get ahold of Larry Keitel?=0A=0A=0ADan Helsper=0ALoensloe Airfield=0APuryear, TN=0A________________________________________________________________________________Subject: Pietenpol-List: Strut Source
Pietenpol-List: Strut Source
Re: Pietenpol-List: Strut Source
Original Posted By: Scott Knowlton
This morning I searched for the Carlson Aircraft website to look at strut pricing,and the domain is for sale. I googled Sky tek and got the same thing. Am Iusing the wrong URL or are they no longer in business? Does anyone know?--------Semper Fi,Terry HandAthens, GAUSMC, USMCR, ATPBVD DVD PDQ BBQRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: Strut Source
This morning I searched for the Carlson Aircraft website to look at strut pricing,and the domain is for sale. I googled Sky tek and got the same thing. Am Iusing the wrong URL or are they no longer in business? Does anyone know?--------Semper Fi,Terry HandAthens, GAUSMC, USMCR, ATPBVD DVD PDQ BBQRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: Strut Source
Re: Pietenpol-List: Strut Source
Original Posted By: Scott Knowlton
Terry. I bought three sets of struts only a couple of months ago from them. I believe they are still in business. Try www.carlsonaircraft.comScott K Burlington ON Sent from my iPhone> On Jul 31, 2014, at 7:47 AM, "jarheadpilot82" wrote:> > > This morning I searched for the Carlson Aircraft website to look at strut pricing,and the domain is for sale. I googled Sky tek and got the same thing. AmI using the wrong URL or are they no longer in business? Does anyone know?> > --------> Semper Fi,> > Terry Hand> Athens, GA> > USMC, USMCR, ATP> BVD DVD PDQ BBQ> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 601#427601> > > > > > > > > > ________________________________________________________________________________Subject: Re: Pietenpol-List: Strut Source
Terry. I bought three sets of struts only a couple of months ago from them. I believe they are still in business. Try www.carlsonaircraft.comScott K Burlington ON Sent from my iPhone> On Jul 31, 2014, at 7:47 AM, "jarheadpilot82" wrote:> > > This morning I searched for the Carlson Aircraft website to look at strut pricing,and the domain is for sale. I googled Sky tek and got the same thing. AmI using the wrong URL or are they no longer in business? Does anyone know?> > --------> Semper Fi,> > Terry Hand> Athens, GA> > USMC, USMCR, ATP> BVD DVD PDQ BBQ> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 601#427601> > > > > > > > > > ________________________________________________________________________________Subject: Re: Pietenpol-List: Strut Source
Pietenpol-List: Re: Strut Source
Original Posted By: "jarheadpilot82"
Sorry Terry, just tried the site and you're right! Try calling 330 426 3934. They had a warehouse full of aluminium struts when I talked to them in the spring.Scott K Sent from my iPhone> On Jul 31, 2014, at 7:47 AM, "jarheadpilot82" wrote:> > > This morning I searched for the Carlson Aircraft website to look at strut pricing,and the domain is for sale. I googled Sky tek and got the same thing. AmI using the wrong URL or are they no longer in business? Does anyone know?> > --------> Semper Fi,> > Terry Hand> Athens, GA> > USMC, USMCR, ATP> BVD DVD PDQ BBQ> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 601#427601> > > > > > > > > > ________________________________________________________________________________Subject: Pietenpol-List: Re: Strut Source
Sorry Terry, just tried the site and you're right! Try calling 330 426 3934. They had a warehouse full of aluminium struts when I talked to them in the spring.Scott K Sent from my iPhone> On Jul 31, 2014, at 7:47 AM, "jarheadpilot82" wrote:> > > This morning I searched for the Carlson Aircraft website to look at strut pricing,and the domain is for sale. I googled Sky tek and got the same thing. AmI using the wrong URL or are they no longer in business? Does anyone know?> > --------> Semper Fi,> > Terry Hand> Athens, GA> > USMC, USMCR, ATP> BVD DVD PDQ BBQ> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 601#427601> > > > > > > > > > ________________________________________________________________________________Subject: Pietenpol-List: Re: Strut Source
Original Posted By: larharris2 Harris
It seems to be "out of order". That is why I was asking. I know that they wereup an running a few months ago. I just did not know if they had closed their doorsrecently.--------Semper Fi,Terry HandAthens, GAUSMC, USMCR, ATPBVD DVD PDQ BBQRead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/scre ... __________
It seems to be "out of order". That is why I was asking. I know that they wereup an running a few months ago. I just did not know if they had closed their doorsrecently.--------Semper Fi,Terry HandAthens, GAUSMC, USMCR, ATPBVD DVD PDQ BBQRead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/scre ... __________
> Pietenpol-List: Re: spar strength
Original Posted By:> taildrags(at)hotmail.com
Oscar=2C You are correct in your recommendation to use Elastic Limit (EL) vs MR. I'm approaching this thing step-by-step in my brain. The MR calculation was a quick determination of failure load to see the 'ballpark.' I intend to 'show my work' as we go along so others can make a reasonable determination of how it can apply to them.For those of you who are curious=2C 'failure' is where the piece of wood breaks. Elastic limit happens before that=3B a permanent deformation (damage) is made by forces beyond the EL. Take a hammer to a piece of wood and you can make dents in it before you cause it to break. We do this to a lesser degree when we steam our rib capstrips=3B the heat temporarily lowers the elastic limit of the wood while we hold it in the bending jig where it takes a permanent set.Lorenzo> Subject: Pietenpol-List: Re: spar strength
Oscar=2C You are correct in your recommendation to use Elastic Limit (EL) vs MR. I'm approaching this thing step-by-step in my brain. The MR calculation was a quick determination of failure load to see the 'ballpark.' I intend to 'show my work' as we go along so others can make a reasonable determination of how it can apply to them.For those of you who are curious=2C 'failure' is where the piece of wood breaks. Elastic limit happens before that=3B a permanent deformation (damage) is made by forces beyond the EL. Take a hammer to a piece of wood and you can make dents in it before you cause it to break. We do this to a lesser degree when we steam our rib capstrips=3B the heat temporarily lowers the elastic limit of the wood while we hold it in the bending jig where it takes a permanent set.Lorenzo> Subject: Pietenpol-List: Re: spar strength
Pietenpol-List: Re: Strut Source
Original Posted By: "bdewenter"
I just spoke to them and they are still in business. Apparently their website gothacked. Try the email below for Mary or the number from my previous post.Scott K Carlsonaircraft(at)att.net Sent from my iPhone> On Jul 31, 2014, at 8:17 AM, "jarheadpilot82" wrote:> > > It seems to be "out of order". That is why I was asking. I know that they wereup an running a few months ago. I just did not know if they had closed theirdoors recently.> > --------> Semper Fi,> > Terry Hand> Athens, GA> > USMC, USMCR, ATP> BVD DVD PDQ BBQ> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 604#427604> > > > > Attachments: > > http://forums.matronics.com//files/scre ... am_261.png> > > > > > > ________________________________________________________________________________Subject: Pietenpol-List: Re: Strut Source
I just spoke to them and they are still in business. Apparently their website gothacked. Try the email below for Mary or the number from my previous post.Scott K Carlsonaircraft(at)att.net Sent from my iPhone> On Jul 31, 2014, at 8:17 AM, "jarheadpilot82" wrote:> > > It seems to be "out of order". That is why I was asking. I know that they wereup an running a few months ago. I just did not know if they had closed theirdoors recently.> > --------> Semper Fi,> > Terry Hand> Athens, GA> > USMC, USMCR, ATP> BVD DVD PDQ BBQ> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 604#427604> > > > > Attachments: > > http://forums.matronics.com//files/scre ... am_261.png> > > > > > > ________________________________________________________________________________Subject: Pietenpol-List: Re: Strut Source
Re: Pietenpol-List: Re: Strut Source
Original Posted By: jarheadpilot82
OFF TOPICTerry,I was casually reviewing the credentials you have appended to your signature, and it seemed to me that this is a case of more-is-better.With this in mind, following are some suggestions that may (or may not) enhance your r=E9sum=E9.Unfortunately, these acronyms, by their very nature, are generally used to described negative situations or actions.Please rest assured, my suggestions do not reflect personally on you but are merely a product of my limited vocabulary...and the fact that you already got the only ones suitable for mixed company.Here are my submissions for your consideration:FUBARRCHBFHTMIPITANFGSNAFUActually, on second thought, the above acronyms may be better suited for use by another individual who regularly makes (drunken?) posts to this forum.Sincerely,Michael---------------------------------------------------------------------------------------------------------------------------------------------------------------------Original Message-----
OFF TOPICTerry,I was casually reviewing the credentials you have appended to your signature, and it seemed to me that this is a case of more-is-better.With this in mind, following are some suggestions that may (or may not) enhance your r=E9sum=E9.Unfortunately, these acronyms, by their very nature, are generally used to described negative situations or actions.Please rest assured, my suggestions do not reflect personally on you but are merely a product of my limited vocabulary...and the fact that you already got the only ones suitable for mixed company.Here are my submissions for your consideration:FUBARRCHBFHTMIPITANFGSNAFUActually, on second thought, the above acronyms may be better suited for use by another individual who regularly makes (drunken?) posts to this forum.Sincerely,Michael---------------------------------------------------------------------------------------------------------------------------------------------------------------------Original Message-----
Pietenpol-List: Re: NX992WD Initial W.& B.
Original Posted By: Ben Charvet
I posted this via email already, but am posting it via the web-based forum as wellsince Matronics is being flaky about delivering messages:See the attached table, FWIW. This is illustrating the difference between the locationof the seat back and the arm the pilot's weight falls at in inches, referencedfrom the wing's leading edge. This covers the sampling of aircraft weweighed and measured at Brodhead. I have sorted the list by fuselage length (measuredfirewall to tailpost).(As far as I can recall, the seat back location was measured at the top longeron)Read this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/tabl ... ______Date: Thu, 31 Jul 2014 13:42:33 -0400
I posted this via email already, but am posting it via the web-based forum as wellsince Matronics is being flaky about delivering messages:See the attached table, FWIW. This is illustrating the difference between the locationof the seat back and the arm the pilot's weight falls at in inches, referencedfrom the wing's leading edge. This covers the sampling of aircraft weweighed and measured at Brodhead. I have sorted the list by fuselage length (measuredfirewall to tailpost).(As far as I can recall, the seat back location was measured at the top longeron)Read this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/tabl ... ______Date: Thu, 31 Jul 2014 13:42:33 -0400
Re: Pietenpol-List: Re: Strut Source
Original Posted By: Scott Knowlton
> To: pietenpol-list(at)matronics.com> > > Lorenzo=3B> > As a practical matter=2C I suggest that you use the value of "fiber stress at the elastic limit" for your spars rather than the modulus of rupture. As it is=2C the old forest product labs data that was published in 1941 for the properties of various woods for aircraft structures has an explanatory note with those values that says there is a significantly wide variation between test specimens of the same wood=2C same moisture content=2C taken from the same tree or different trees. They used an average value=2C but did your wood come from the average tree? And are the trees that are being cut today the same as the ones in the forest in the first half of the 20th century=2C when most of the wood design books were written and the research on wood for airplanes conducted?> > With that said=2C understand that the fiber stress at the elastic limit is presented in the tables for a load duration of only 3 seconds. Considering that the normal category for G loading is +3.8G and that that loading can occur in a coordinated 75 degree bank=2C 3 seconds is probably a good safe thing to design for and "elastic limit" means that there is no permanent deformation of the spar as a result. Let's not fly rigorous high-G maneuvers in our Piets=2C eh?> > Modulus of rupture=2C on the other hand=2C means if the wood sees it you're going to rebuild a permanently broken wing after you land=2C or it's going to break off in the air and you crash. When the spar experiences this kind of load=2C it's irreversibly damaged. This has never happened to a Piet in the air (in the records=2C anyway)- so we don't want to spoil the safety record and design to the modulus of rupture just to get our name in the history books. Let's use the elastic limit. Practically speaking=2C that's 6200 psi for spruce and 8000 psi for Douglas fir. ________________________________________________________________________________Subject: Re: Pietenpol-List: Re: Strut Source
> To: pietenpol-list(at)matronics.com> > > Lorenzo=3B> > As a practical matter=2C I suggest that you use the value of "fiber stress at the elastic limit" for your spars rather than the modulus of rupture. As it is=2C the old forest product labs data that was published in 1941 for the properties of various woods for aircraft structures has an explanatory note with those values that says there is a significantly wide variation between test specimens of the same wood=2C same moisture content=2C taken from the same tree or different trees. They used an average value=2C but did your wood come from the average tree? And are the trees that are being cut today the same as the ones in the forest in the first half of the 20th century=2C when most of the wood design books were written and the research on wood for airplanes conducted?> > With that said=2C understand that the fiber stress at the elastic limit is presented in the tables for a load duration of only 3 seconds. Considering that the normal category for G loading is +3.8G and that that loading can occur in a coordinated 75 degree bank=2C 3 seconds is probably a good safe thing to design for and "elastic limit" means that there is no permanent deformation of the spar as a result. Let's not fly rigorous high-G maneuvers in our Piets=2C eh?> > Modulus of rupture=2C on the other hand=2C means if the wood sees it you're going to rebuild a permanently broken wing after you land=2C or it's going to break off in the air and you crash. When the spar experiences this kind of load=2C it's irreversibly damaged. This has never happened to a Piet in the air (in the records=2C anyway)- so we don't want to spoil the safety record and design to the modulus of rupture just to get our name in the history books. Let's use the elastic limit. Practically speaking=2C that's 6200 psi for spruce and 8000 psi for Douglas fir. ________________________________________________________________________________Subject: Re: Pietenpol-List: Re: Strut Source