Original Posted By: shad bell
=0A=0A=0A=0AYes Bill. The videos are more of a video log of my building process and not so much- instructional videos. I should be more clear about that on the website...thanks for the heads up.Michael PerezKaretaker Aerowww.karetakeraero.com=0A=0A-=0A________________________________________________________________________________Date: Wed, 2 Mar 2011 18:40:12 -0800 (PST)
Pietenpol-List: Wing Strut Fuse. Attach.
Pietenpol-List: Wing Strut Fuse. Attach.
Original Posted By: Owen Davies
Re: Pietenpol-List: Wing Strut Fuse. Attach.
Original Posted By: Michael Perez
Re: Pietenpol-List: Wing Strut Fuse. Attach.
Original Posted By: Doug Dever
Michael:6061 aluminum has an ultimate tensile strength of 45,000 psi in the T6 condition. The as-welded UTS of material within the heat affected zone can beas HIGH as 24-25,000 psi if proper procedures are used with strict adherence to interpass temperatures. In short, it really does turn into bubble gum once itis heated. After naturally aging for a long period of time, the T4 condition MAYbe achieved, which would give ~40,000 psi. I'm an AWS welding inspector, and I likebolts for this application.Brett PhillipsStrasburg, VANX311GP> I was aware of some softening, but I did not know to what degree. I know someuse thealuminum insert threaded for a fork end, there is that option as well.> > Michael Perez> > Karetaker Aero> > www.karetakeraero.com> > ---------------------------------------------This message was sent using Shentel WebMail.http://WebMail.Shentel.Net________________________________________________________________________________
Michael:6061 aluminum has an ultimate tensile strength of 45,000 psi in the T6 condition. The as-welded UTS of material within the heat affected zone can beas HIGH as 24-25,000 psi if proper procedures are used with strict adherence to interpass temperatures. In short, it really does turn into bubble gum once itis heated. After naturally aging for a long period of time, the T4 condition MAYbe achieved, which would give ~40,000 psi. I'm an AWS welding inspector, and I likebolts for this application.Brett PhillipsStrasburg, VANX311GP> I was aware of some softening, but I did not know to what degree. I know someuse thealuminum insert threaded for a fork end, there is that option as well.> > Michael Perez> > Karetaker Aero> > www.karetakeraero.com> > ---------------------------------------------This message was sent using Shentel WebMail.http://WebMail.Shentel.Net________________________________________________________________________________
RE: Pietenpol-List: Wing Strut Fuse. Attach.
Original Posted By:> owen5819(at)comcast.net
Thats the way all float fittings are done-bolted. I would not weld anything aluminum that is structural.Doug DeverIn beautiful Stow Ohio> Date: Wed=2C 2 Mar 2011 11:33:27 -0500
Thats the way all float fittings are done-bolted. I would not weld anything aluminum that is structural.Doug DeverIn beautiful Stow Ohio> Date: Wed=2C 2 Mar 2011 11:33:27 -0500
RE: Pietenpol-List: Wing Strut Fuse. Attach.
Original Posted By:> bphillip(at)shentel.net
Keep in mind that you must desing to yeild strength=2C not ultimate. Only NASA designs to ultimate strength. Doug DeverIn beautiful Stow Ohio> To: pietenpol-list(at)matronics.com
Keep in mind that you must desing to yeild strength=2C not ultimate. Only NASA designs to ultimate strength. Doug DeverIn beautiful Stow Ohio> To: pietenpol-list(at)matronics.com
Pietenpol-List: Re: HINT videos - caveat emptor
Original Posted By: "K5YAC"
The recent discussions about material substitutions got me thinking.Michael, you are offering for sale a series of "HINT" videos that cover the constructionof your plane. And you have discussed here on the List some of the changesthat you have incorporated into your particular project. There may be otherchanges that you have not shared with the List. As I recall, from your posts,this is the first aircraft that you have built. I was wondering whether youmake it clear in your videos that the changes you have made are variationsfrom the plans, and are unproven. I use that word "unproven" because there havebeen several times where you have described how you have varied from the plans,and standard aircraft building practices or engineering advice. Based on thosecriteria, many of your changes will really remain unproven until they havebeen demonstrated to work in actual flight conditions and stand the test oftime.I just can't help but wonder about the sensibility of offering "instructional"videos documenting a number of changes that are not backed up by technical dataand/or practical aircraft building experience. Your website states that yougive reasons for the changes that you made, and the processes used, but do youprovide any science or data to back up your new designs? Luckily, you are notoffering plans for any of your changes.Hopefully anyone purchasing your videos is aware of the situation, and is usingthem for entertainment purposes only.Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: HINT videos - caveat emptor
The recent discussions about material substitutions got me thinking.Michael, you are offering for sale a series of "HINT" videos that cover the constructionof your plane. And you have discussed here on the List some of the changesthat you have incorporated into your particular project. There may be otherchanges that you have not shared with the List. As I recall, from your posts,this is the first aircraft that you have built. I was wondering whether youmake it clear in your videos that the changes you have made are variationsfrom the plans, and are unproven. I use that word "unproven" because there havebeen several times where you have described how you have varied from the plans,and standard aircraft building practices or engineering advice. Based on thosecriteria, many of your changes will really remain unproven until they havebeen demonstrated to work in actual flight conditions and stand the test oftime.I just can't help but wonder about the sensibility of offering "instructional"videos documenting a number of changes that are not backed up by technical dataand/or practical aircraft building experience. Your website states that yougive reasons for the changes that you made, and the processes used, but do youprovide any science or data to back up your new designs? Luckily, you are notoffering plans for any of your changes.Hopefully anyone purchasing your videos is aware of the situation, and is usingthem for entertainment purposes only.Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: HINT videos - caveat emptor
Original Posted By: bphillip(at)shentel.net
Hear Hear!--------Mark ChouinardWings, Center Section and Empannage framed up - Working on FuselageRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Hear Hear!--------Mark ChouinardWings, Center Section and Empannage framed up - Working on FuselageRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Pietenpol-List: Re: Wing Strut Fuse. Attach.
Original Posted By: "Bill Church"
ABSOLUTELY!Brett> > Keep in mind that you must desing to yeild strength, not ultimate. Only> NASA designs to ultimate strength. > > Doug Dever> In beautiful Stow Ohio---------------------------------------------This message was sent using Shentel WebMail.http://WebMail.Shentel.Net________________________________________________________________________________Subject: Pietenpol-List: Re: Wing Strut Fuse. Attach.
ABSOLUTELY!Brett> > Keep in mind that you must desing to yeild strength, not ultimate. Only> NASA designs to ultimate strength. > > Doug Dever> In beautiful Stow Ohio---------------------------------------------This message was sent using Shentel WebMail.http://WebMail.Shentel.Net________________________________________________________________________________Subject: Pietenpol-List: Re: Wing Strut Fuse. Attach.
Pietenpol-List: Re: Wing Strut Fuse. Attach.
Original Posted By: "K5YAC"
Hey, this conversation sounds familiar...Oh, I know why.See this thread from a few years ago:http://forums.matronics.com/viewtopic.php?t=46368Let's see, 40 percent reduction from 45000 would be about 27000 - yup, looks likethe science hasn't changed in the last three years.Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Wing Strut Fuse. Attach.
Hey, this conversation sounds familiar...Oh, I know why.See this thread from a few years ago:http://forums.matronics.com/viewtopic.php?t=46368Let's see, 40 percent reduction from 45000 would be about 27000 - yup, looks likethe science hasn't changed in the last three years.Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Wing Strut Fuse. Attach.
Original Posted By: Michael Perez
That's it... I'm scrapping my control horns.
--------Mark ChouinardWings, Center Section and Empannage framed up - Working on FuselageRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Wed, 2 Mar 2011 14:52:24 -0800 (PST)
That's it... I'm scrapping my control horns.
--------Mark ChouinardWings, Center Section and Empannage framed up - Working on FuselageRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Wed, 2 Mar 2011 14:52:24 -0800 (PST)Re: Pietenpol-List: HINT videos - caveat emptor
Original Posted By: airlion
Pietenpol-List: HINT videos - caveat emptor
Original Posted By: "Bill Church"
> > > Michael:> > 6061 aluminum has an ultimate tensile strength of 45=2C000 psi in the T6> condition. The as-welded UTS of material within the heat affected zone can be as > HIGH as 24-25=2C000 psi if proper procedures are used with strict adherence to > interpass temperatures. In short=2C it really does turn into bubble gum once it is > heated. After naturally aging for a long period of time=2C the T4 condition MAY be > achieved=2C which would give ~40=2C000 psi. I'm an AWS welding inspector=2C and I like > bolts for this application.> > Brett Phillips> Strasburg=2C VA> NX311GP> > > > I was aware of some softening=2C but I did not know to what degree. I know some > use the> aluminum insert threaded for a fork end=2C there is that option as well.> > > > Michael Perez> > > > Karetaker Aero> > > > www.karetakeraero.com> > > > > > ---------------------------------------------> This message was sent using Shentel WebMail.> http://WebMail.Shentel.Net> > > ============================================> > > ________________________________________________________________________________Subject: Pietenpol-List: HINT videos - caveat emptor
> > > Michael:> > 6061 aluminum has an ultimate tensile strength of 45=2C000 psi in the T6> condition. The as-welded UTS of material within the heat affected zone can be as > HIGH as 24-25=2C000 psi if proper procedures are used with strict adherence to > interpass temperatures. In short=2C it really does turn into bubble gum once it is > heated. After naturally aging for a long period of time=2C the T4 condition MAY be > achieved=2C which would give ~40=2C000 psi. I'm an AWS welding inspector=2C and I like > bolts for this application.> > Brett Phillips> Strasburg=2C VA> NX311GP> > > > I was aware of some softening=2C but I did not know to what degree. I know some > use the> aluminum insert threaded for a fork end=2C there is that option as well.> > > > Michael Perez> > > > Karetaker Aero> > > > www.karetakeraero.com> > > > > > ---------------------------------------------> This message was sent using Shentel WebMail.> http://WebMail.Shentel.Net> > > ============================================> > > ________________________________________________________________________________Subject: Pietenpol-List: HINT videos - caveat emptor