Pietenpol-List Digest Archive

Tue 11/28/06


Total Messages Posted: 20



Today's Message Index:
----------------------
 
     0. 12:41 AM - Who is "Matt Dralle" & What Are "The Lists"? [Please Read] (Matt Dralle)
     1. 04:13 AM - Re: T-88 vs. urethane (Gorilla Glue) ()
     2. 06:04 AM - Re: Is a firewall necessary? (Ed G.)
     3. 06:13 AM - Re: T-88 vs. urethane (Gorilla Glue) (Pietsrneat@aol.com)
     4. 06:21 AM - Re: Is a firewall necessary? (HelsperSew@aol.com)
     5. 06:23 AM - Re: T-88 vs. urethane (Gorilla Glue) (Scott Schreiber)
     6. 06:45 AM - Re: T-88 vs. urethane (Gorilla Glue) ()
     7. 07:33 AM - Re: Is a firewall necessary? (Dick Navratil)
     8. 08:04 AM - Re: Is a firewall necessary? (Ed G.)
     9. 08:19 AM - Re: Is a firewall necessary? (Phillips, Jack)
    10. 08:28 AM - Re: Is a firewall necessary? (DJ Vegh)
    11. 09:02 AM - you don't need a firewall (Cuy, Michael D. (GRC-RXD0)[ASRC])
    12. 09:09 AM - Re: you don't need a firewall (Pietsrneat@aol.com)
    13. 09:15 AM - Re: heavy piet (Phillips, Jack)
    14. 09:33 AM - Re: heavy piet (Pietsrneat@aol.com)
    15. 09:36 AM - Re: heavy piet ()
    16. 10:01 AM - Re: heavy piet (Phillips, Jack)
    17. 04:54 PM - Re: Is a firewall necessary? (Rcaprd@aol.com)
    18. 05:42 PM -  ()
    19. 11:13 PM - Re: Fuse questions... (Gene Hubbard)
 
 
 


Message 0


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    Time: 12:41:08 AM PST US
    From: Matt Dralle <dralle@matronics.com>
    Subject: Who is "Matt Dralle" & What Are "The Lists"? [Please Read]
    Dear Listers, Who is Matt Dralle and what exactly are these Lists? Well, I've been working in the information technology industry for over 20 years primarily in computer networking design and implementation. I have also done extensive work in web development and CGI design during this period. I started the Matronics Email Lists back in 1990 with about 30 fellow RV builders from around the world. Since that time, I have added 63 other kinds of aircraft related Lists to the line up and numerous other List related services such as the Forums, Wiki, Archives and Search Engine just to name a few. For flexibility and reliability, I have chosen to run all of my own servers here locally. Other List-related systems include a 1 Gigabit, fully switched network infrastructure, a commercial-grade Netscreen firewall, a Barracuda spam filter, a local T1 Internet router, and a commercial-grade business T1 Internet connection with full static addressing. The computer servers found here include a brand new, quad-processor Xeon Linux server for List web services, a dual-processor Xeon Linux system dedicated to the email processing List functions, and another P4 Linux system serving as a remote storage disk farm for the archives, databases, and for an on-line hard drive-based backup system with 3.2 Terra Bytes of storage, soon to be upgraded to over 6 Terra Bytes! This entire system is protected by three large, commercial-grade uninterrupted power supply (UPS) systems that assure the Lists are available even during a local power outage! Speaking of power, imagine how much electricity it takes to run all of these systems. One month this Summer, I had a staggering $1368 bill for electricity alone! I recently upgraded all of the computer racking infrastructure including new power feeds and dedicated air conditioning for the room that serves as the Computer Center for the Matronics Email Lists. This year I added another rack to house the new MONSTER quad-processor web system that didn't quite fit into the first rack! Here's a composite photo of the List Computer Center before the addition of the second rack: http://www.matronics.com/MattDralle-ListComputerCenter.jpg As you can see, I take running these Lists very seriously and I am dedicated to providing an always-on, 24x7x365 experience for each and every Lister. But building and running this system isn't cheap. As I've stated before, I don't support any of these systems with commercial advertising on the Lists. It is supported 100% through List member Contributions! That means you... and you... and YOU! To that end, I hold a List Fund Raiser each November and ask that members make a small Contribution to support the continued operation and upgrade of this ever-expanding system. Its solely YOUR Contributions that keeps it running! Please make a Contribution today to support these Lists! http://www.matronics.com/contribution Or, by dropping a personal check in the mail to: Matronics / Matt Dralle PO Box 347 Livermore CA 94551-0347 USA (Please include your email address on the check!) Thank you! Matt Dralle Matronics Email List Administrator


    Message 1


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    Time: 04:13:13 AM PST US
    Subject: T-88 vs. urethane (Gorilla Glue)
    From: <harvey.rule@bell.ca>
    I mistakenly used gorilla glue on the rubber trim I put on the edges of my wing end covers.It foamed up and I spent hours trying to get the excess off of it without damaging the rubber and surface of the cover.As you said it has it's place.Exactly where that is I'm not sure but it sure wasn't the place I put it.Live and learn.


    Message 2


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    Time: 06:04:33 AM PST US
    From: "Ed G." <flyboy_120@hotmail.com>
    Subject: Is a firewall necessary?
    Hi Dan...A firewall is only necessary if your engine catches fire..Just kidding...But then, a DAR will probably not sign off on your plane for it's airworthness certificate if all the plywood is not protected by metal. If it were my plane I would want the shelf area protected as well as the lower section. If you ever need it it will be well worth the extra weight. Use the lightest recommended gauge metal and back it up with firewall insulation material. Ed G. >From: HelsperSew@aol.com >To: pietenpol-list@matronics.com >Subject: Pietenpol-List: Is a firewall necessary? >Date: Tue, 28 Nov 2006 02:18:34 EST > >Hi All, > >I am using a Ford A motor and am contemplating adding a stainless firewall >to the airplane. Of course it will add unwelcome weight and I am concerned >with that. Should I put it only on the large vertical area or also to the >"shelf" part where the mag goes? What are the opinions out there on this >subject >of firewalls? > >Dan Helsper >Poplar Grove, IL


    Message 3


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    Time: 06:13:59 AM PST US
    From: Pietsrneat@aol.com
    Subject: Re: T-88 vs. urethane (Gorilla Glue)
    In a message dated 11/28/2006 12:53:11 A.M. Eastern Standard Time, jimboyer@hughes.net writes: Hi Ron, I don't believe Titebond III is a urethane glue; it is an alphatic resin and is much more resistant to moisture, etc. It is a very good woodworking glue. Cheers, Jim I realize that, Jim. I was just pointing out another instance where someone used an adhesive that might not be appropriate for aircraft. Harvey then wrote about using the urethane glue, then having to spend hours cleaning up the part after the glue expanded and cured. This is one major reason I would never even consider it for a Piet. I use it in my sign business when I need to glue and clamp up narrower widths of wood to produce wider boards. For this purpose, it is great because it is strong and easy to sand and clean up the joints (which must be perfect). Ron


    Message 4


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    Time: 06:21:46 AM PST US
    From: HelsperSew@aol.com
    Subject: Re: Is a firewall necessary?
    Ed, What is the firewall insulation material you refer to? Dan Helsper Poplar Grove, IL.


    Message 5


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    Time: 06:23:54 AM PST US
    From: "Scott Schreiber" <got22b@subarubrat.com>
    Subject: Re: T-88 vs. urethane (Gorilla Glue)
    I didn't mean to suggest using it as a structural glue, but it has some great uses in the model world. Holding hinges in the wood, locking ribs onto a trailing edge sheet, etc. ----- Original Message ----- From: <harvey.rule@bell.ca> Sent: Tuesday, November 28, 2006 7:12 AM Subject: RE: Pietenpol-List: T-88 vs. urethane (Gorilla Glue) > > I mistakenly used gorilla glue on the rubber trim I put on the edges of > my wing end covers.It foamed up and I spent hours trying to get the > excess off of it without damaging the rubber and surface of the cover.As > you said it has it's place.Exactly where that is I'm not sure but it > sure wasn't the place I put it.Live and learn. > > >


    Message 6


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    Time: 06:45:39 AM PST US
    Subject: T-88 vs. urethane (Gorilla Glue)
    From: <harvey.rule@bell.ca>
    I didn't use it as a structural glue.I just wanted something to hold the rubber trim on.I could have used the same stuff they use for putting model aircraft together but I figured I would try this stuff called Gorilla.I knew it would expand but I had no idea how much.I should have just tried it on a small piece to see what the outcome would be and go from there.Like I said live and learn.I figure by the time I'm 150 years old I'll have it down pretty good.


    Message 7


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    Time: 07:33:22 AM PST US
    From: "Dick Navratil" <horzpool@goldengate.net>
    Subject: Re: Is a firewall necessary?
    I used aluminum instead of stainless for the firewall, not knowing better at the time. I then glued on a fiberfrax matting on front of it, good to 2800 degrees. Above the shelf, I used Firewall 2000 blanket, behind the galvanized former for the turtle deck. Both products are in the Aircraft Spruce catalog. If I was going to do it again, I would just use .024 stainless. Don't worry so much about weight foreward of C.G. Dick N. ----- Original Message ----- From: HelsperSew@aol.com To: pietenpol-list@matronics.com Sent: Tuesday, November 28, 2006 1:18 AM Subject: Pietenpol-List: Is a firewall necessary? Hi All, I am using a Ford A motor and am contemplating adding a stainless firewall to the airplane. Of course it will add unwelcome weight and I am concerned with that. Should I put it only on the large vertical area or also to the "shelf" part where the mag goes? What are the opinions out there on this subject of firewalls? Dan Helsper Poplar Grove, IL


    Message 8


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    Time: 08:04:47 AM PST US
    From: "Ed G." <flyboy_120@hotmail.com>
    Subject: Re: Is a firewall necessary?
    I can't pull the name of it out of my head right now and I don't have an ACS catalog with me here at work. The stuff I used looks similar to asbestos sheet and comes in either 1/16" or 1/8" thickness. It sandwiches between the metal and wood. It's purpose is to keep the hot sheet metal from setting the wood on fire hopefully buying you enough time to get on the ground. I used the 1/8" . I think it's in the "firewall" section of your Aircraft Spruce catalog. It's not required but it is good insurance. A gasoline or oil fire fed by 70 mph winds can get really hot, really fast. Ed >From: HelsperSew@aol.com >To: pietenpol-list@matronics.com >Subject: Re: Pietenpol-List: Is a firewall necessary? >Date: Tue, 28 Nov 2006 09:21:24 EST > >Ed, > >What is the firewall insulation material you refer to? > >Dan Helsper >Poplar Grove, IL. >


    Message 9


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    Time: 08:19:24 AM PST US
    Subject: Is a firewall necessary?
    From: "Phillips, Jack" <Jack.Phillips@cardinal.com>
    Fiberfrax. Page 128 of the current AS&S catalog. Good stuff. Jack Phillips Hoping to fly the Piet one last time tomorrow before it's annual expires on Friday -----Original Message----- From: owner-pietenpol-list-server@matronics.com [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Ed G. Sent: Tuesday, November 28, 2006 11:04 AM Subject: Re: Pietenpol-List: Is a firewall necessary? I can't pull the name of it out of my head right now and I don't have an ACS catalog with me here at work. The stuff I used looks similar to asbestos sheet and comes in either 1/16" or 1/8" thickness. It sandwiches between the metal and wood. It's purpose is to keep the hot sheet metal from setting the wood on fire hopefully buying you enough time to get on the ground. I used the 1/8" . I think it's in the "firewall" section of your Aircraft Spruce catalog. It's not required but it is good insurance. A gasoline or oil fire fed by 70 mph winds can get really hot, really fast. Ed >From: HelsperSew@aol.com >To: pietenpol-list@matronics.com >Subject: Re: Pietenpol-List: Is a firewall necessary? >Date: Tue, 28 Nov 2006 09:21:24 EST > >Ed, > >What is the firewall insulation material you refer to? > >Dan Helsper >Poplar Grove, IL. > _________________________________________________


    Message 10


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    Time: 08:28:08 AM PST US
    From: "DJ Vegh" <dj@veghdesign.com>
    Subject: Re: Is a firewall necessary?
    it's FiberFrax and I used it on my firewall as well. I've put a sample on a piece of wood and held the torch to the sample for up to a minute and the wood was only discolored not ignited. DJ ----- Original Message ----- From: "Ed G." <flyboy_120@hotmail.com> Sent: Tuesday, November 28, 2006 9:03 AM Subject: Re: Pietenpol-List: Is a firewall necessary? > > > I can't pull the name of it out of my head right now and I don't have an ACS > catalog with me here at work. The stuff I used looks similar to asbestos > sheet and comes in either 1/16" or 1/8" thickness. It sandwiches between the > metal and wood. It's purpose is to keep the hot sheet metal from setting the > wood on fire hopefully buying you enough time to get on the ground. I used > the 1/8" . I think it's in the "firewall" section of your Aircraft Spruce > catalog. It's not required but it is good insurance. A gasoline or oil fire > fed by 70 mph winds can get really hot, really fast. Ed > > >From: HelsperSew@aol.com > >To: pietenpol-list@matronics.com > >Subject: Re: Pietenpol-List: Is a firewall necessary? > >Date: Tue, 28 Nov 2006 09:21:24 EST > > > >Ed, > > > >What is the firewall insulation material you refer to? > > > >Dan Helsper > >Poplar Grove, IL. > > > >


    Message 11


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    Time: 09:02:19 AM PST US
    Subject: you don't need a firewall
    From: "Cuy, Michael D. (GRC-RXD0)[ASRC]" <michael.d.cuy@nasa.gov>
    On a Breezy........


    Message 12


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    Time: 09:09:09 AM PST US
    From: Pietsrneat@aol.com
    Subject: Re: you don't need a firewall
    In a message dated 11/28/2006 12:05:08 P.M. Eastern Standard Time, michael.d.cuy@nasa.gov writes: On a Breezy........ That was funny, Mike. Do not archive


    Message 13


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    Time: 09:15:10 AM PST US
    Subject: heavy piet
    From: "Phillips, Jack" <Jack.Phillips@cardinal.com>
    Hi Dan, My original axle was .120" wall, 1-1/2" OD, 4130 Condition N. After a forced landing broke the axle, causing substantial damage to the airframe, I performed a stress analysis on the axle and found that at .120 wall, the axle was only good for about 2 g's (which is about how hard I hit on that landing, avoiding hitting a pickup truck). The EAA recommends that landing gear be capable of handling 3.1 g's, no more and no less. More, and a hard landing might damage other parts of the structure. Less, and the gear may just not be strong enough (as mine wasn't). In order to make an axle of 4130 condition N that can handle 3.1 g's requires .25" wall. However, .25" wall tubing of the length required weighs well over 20 lbs. My new axle is .188" wall, then I had it heat treated to 160,000 psi tensile strength (condition N has a tensile strength of 90,000 psi). I was incorrect in saying it weighed 20 lbs. It weighs 12 lbs, according to my notes. I was apparently remembering the weight of the .25" wall axle, which IS over 20 lbs. That is why I elected to heat treat my new axle, to get it to the same strength as the 20 lbs axle without all that weight. Expensive process though. Cost $475 to heat treat it, or about $50 per pound of weight saved. Don't get me wrong, my Pietenpol flies well, but it will never set a record on climb performance, and I wish it were lighter. I tried to be very weight conscious during the construction but a number of factors added up to more weight than I like. If I built another one, I would not make the fuselage wider. I certainly would not paint another one with Aerothane - that paint is VERY heavy. I figure I'm carrying around close to 60 lbs of paint. I wish I didn't need a radio or transponder in mine, but it sure makes it easier flying in Raleigh's Class C airspace (which is scheduled to go to Class B soon). The battery and the avionics add nearly 18 lbs of useless weight. The ELT (which didn't go off during the forced landing, even though it was hard enough to break the axle) adds another 4 lbs. My leather seats with Temperfoam padding add another couple of pounds, but they sure were nice and comfortable on the 37 hour round trip to Brodhead and OSH and back. Everything is a trade off. I know there are a number of Piets that are considerably heavier than mine. -----Original Message----- Jack, What wall thickness was your straight axle? You mentioned a weight of 20 lbs, so I went out to my hangar and weighed mine (a full 72" long at this point before trimming) and it was only about 10 lbs. The thickness on mine is .120 I believe. Dan Helsper Poplar Grove, IL _________________________________________________ This message is for the designated recipient only and may contain privilege d, proprietary, or otherwise private information. If you have received it i n error, please notify the sender immediately and delete the original. Any other use of the email by you is prohibited. Dansk - Deutsch - Espanol - Francais - Italiano - Japanese - Nederlands - N


    Message 14


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    Time: 09:33:26 AM PST US
    From: Pietsrneat@aol.com
    Subject: Re: heavy piet
    In a message dated 11/28/2006 12:18:14 P.M. Eastern Standard Time, Jack.Phillips@cardinal.com writes: I certainly would not paint another one with Aerothane - that paint is VERY heavy. What would you use, Jack? I was planning to use Aerothane on mine.


    Message 15


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    Time: 09:36:40 AM PST US
    Subject: heavy piet
    From: <harvey.rule@bell.ca>
    Go naked! Do not archive ________________________________ From: owner-pietenpol-list-server@matronics.com [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Pietsrneat@aol.com Sent: November 28, 2006 12:33 PM Subject: Re: Pietenpol-List: heavy piet In a message dated 11/28/2006 12:18:14 P.M. Eastern Standard Time, Jack.Phillips@cardinal.com writes: I certainly would not paint another one with Aerothane - that paint is VERY heavy. What would you use, Jack? I was planning to use Aerothane on mine.


    Message 16


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    Time: 10:01:10 AM PST US
    Subject: heavy piet
    From: "Phillips, Jack" <Jack.Phillips@cardinal.com>
    PolyTone. Lighter and one heck of a lot easier to repair Jack -----Original Message----- From: owner-pietenpol-list-server@matronics.com [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Pietsrneat@aol.com Sent: Tuesday, November 28, 2006 12:33 PM To: pietenpol-list@matronics.com Subject: Re: Pietenpol-List: heavy piet In a message dated 11/28/2006 12:18:14 P.M. Eastern Standard Time, Jack.Phillips@cardinal.com writes: I certainly would not paint another one with Aerothane - that paint is VERY heavy. What would you use, Jack? I was planning to use Aerothane on mine. _________________________________________________ This message is for the designated recipient only and may contain privilege d, proprietary, or otherwise private information. If you have received it i n error, please notify the sender immediately and delete the original. Any other use of the email by you is prohibited. Dansk - Deutsch - Espanol - Francais - Italiano - Japanese - Nederlands - N


    Message 17


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    Time: 04:54:06 PM PST US
    From: Rcaprd@aol.com
    Subject: Re: Is a firewall necessary?
    In a message dated 11/28/2006 1:20:33 AM Central Standard Time, HelsperSew@aol.com writes: What are the opinions out there on this subject of firewalls? Dan, Yes, a Firewall is Definately necessary !! The only material that should be used for Firewalls, are either Stainless Steel, or the less expensive Galvanized steel. When I had the Model A on my Pietenpol, I used Galvanized just up to the top edge of the face of the firewall, but not into the shelf area. It would be very difficult to build enough protection into the shelf area because there is so many inside corners and sides to protect. That would also cause a place for moisture to collect. For this reason, the Model A Pietenpol is a very difficult design to protect from an engine fire. When I did the Firewall Forward retrofit to the Continental A65 engine, I used a full face - one piece Stainless Steel firewall, and backed it up with the thickest fiberglass matt (not weave) I could find which is about 1/16" thick. I think it's a good idea to back it up with FiberFrax (which is a Ceramic fiber), which is superior to fiberglass...just have to be carefull not to compress the thickness of the FiberFrax. I'm using 1/8" FiberFrax behind the firewall on my Tailwind. Lynn Knoll and I did a flame test on the Fiberfax, and it simply will Not burn. Chuck G. NX770CG


    Message 18


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    Time: 05:42:44 PM PST US


    Message 19


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    Time: 11:13:34 PM PST US
    From: Gene Hubbard <enhubbard@sbcglobal.net>
    Subject: Re: Fuse questions...
    Phillips, Jack wrote: > A couple of concerns, Ken, > > I made my Pietenpol 1" wider than plans, and used the long fuselage > plans. The result is a pretty heavy Pietenpol (empty weight 745 lbs), > which climbs even worse than usual for a Piet. There are a couple of > problems with the long, wide fuselage. The first is weight. SOme > years ago, someone on this list compiled a list of Pietenpols at > Brodhead, comparing their empty weights and CG locations. Every one > of the long fuselage Piets came in at over 700 lbs, and a couple were > over 800 lbs. You wouldn't think that adding 9" or so would add 50 to > 100 lbs, but it seems to do so. Making it wider adds substantial > weight as well. The other problem with a wider fuselage is in > expense. With a 24" wide fuselage, you can use a single sheet of > plywood ripped lengthwise for the floorboards and firewall. If you > make it wider, you will use a lot more plywood, with substantial waste. > > The Pietenpol is supposed to have a gross weight of about 1050 lbs. > If you weigh 254 lbs, and carry 10 gallons of gas, your airplane can > only weigh 736 lbs EMPTY, and you'd probably better not plan on > carrying any passengers. I have flown mine with myself and a 205 lb > passenger, and 15 gallons of fuel on board, for a gross weight of > 1,240 lbs. It flew, but I was glad we were flying off a 6,000' paved > runway. Climb rate was a shade under 100 feet per minute. > > If I were to build another one, I would build the short fuselage and > keep it standard width. I'm 6'2 and 200 lbs, and I've flown Mike > Cuy's standard width, short fuse Piet and found it nearly as > comfortable as my own, with a better climb rate. > > Jack Phillips > NX899JP > > > > -----Original Message----- > From: owner-pietenpol-list-server@matronics.com > [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of > KMHeide > Sent: Saturday, November 18, 2006 4:42 PM > To: Pietenpol > Subject: Pietenpol-List: Fuse questions... > > Fellow Pieters: > > Question.....If you are going to build a wider fuselage would you > build it 3" or 4" wider? Also, are they going to be any major > changes is the structural integrity, rigging etc.... Lastly, for a > guy who is 6'0 and 254lbs....is the current size of the plane > comfortable? what modification if any have you made to improve > function and comfort of this plane design. > > Ken H. > Fargo, ND > > > >_________________________________________________ > > >Dansk - Deutsch - Espanol - Francais - Italiano - Japanese - Nederlands - N > >




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