Original Posted By: Earl Myers
I need to cover the upper cowling of my super ace in aluminium sheet.This is the area foreward of the cockpit, and behind the firewall, just under the wing. It is not a stressed part...mostly just keeps the wind out.What I wonder is, can I substitute .025 5052 ( 1/2 the strength by my a/c spruce catalog) for .025 2024 ?Would I be able to, if I were to go with .032 5052 ?I can get the 5052 locally for about 60.00 ,where the 2024 from my same local source requires a full 4 by 12 ft sheet at around 180.00 .Bob________________________________________________________________________________
Pietenpol-List: aluminium, 5052 vs 2024
Pietenpol-List: Re: aluminium, 5052 vs 2024
Original Posted By: Ed0248(at)aol.com
I dont think it's the strength they are after as much as the hardness.2024is a harder aluminum than the 5052 and will be far more resistant todenting. You know, the dents that occur when the line boy drops the fuelnozzle on your boot cowl. On the Christavia, however, I'm pretty sure thatthey spec 0.025" 6061 for that area. I'll double check tonight for you.You should find that this is similar in price to 2024.Is it still possible to get the designer's opinion or is this an orphanneddesign.Ken.On Tue, 31 Aug 1999, oil can wrote:> I need to cover the upper cowling of my super ace in aluminium sheet.> > This is the area foreward of the cockpit, and behind the firewall, just > under the wing. It is not a stressed part...mostly just keeps the wind out.> > What I wonder is, can I substitute .025 5052 ( 1/2 the strength by my a/c > spruce catalog) for .025 2024 ?> > Would I be able to, if I were to go with .032 5052 ?> > I can get the 5052 locally for about 60.00 ,where the 2024 from my same > local source requires a full 4 by 12 ft sheet at around 180.00 .> > Bob> > Ken Beanlands B.Eng (Aerospace)Calgary, Alberta, CanadaChristavia MK 1 C-GREN________________________________________________________________________________
I dont think it's the strength they are after as much as the hardness.2024is a harder aluminum than the 5052 and will be far more resistant todenting. You know, the dents that occur when the line boy drops the fuelnozzle on your boot cowl. On the Christavia, however, I'm pretty sure thatthey spec 0.025" 6061 for that area. I'll double check tonight for you.You should find that this is similar in price to 2024.Is it still possible to get the designer's opinion or is this an orphanneddesign.Ken.On Tue, 31 Aug 1999, oil can wrote:> I need to cover the upper cowling of my super ace in aluminium sheet.> > This is the area foreward of the cockpit, and behind the firewall, just > under the wing. It is not a stressed part...mostly just keeps the wind out.> > What I wonder is, can I substitute .025 5052 ( 1/2 the strength by my a/c > spruce catalog) for .025 2024 ?> > Would I be able to, if I were to go with .032 5052 ?> > I can get the 5052 locally for about 60.00 ,where the 2024 from my same > local source requires a full 4 by 12 ft sheet at around 180.00 .> > Bob> > Ken Beanlands B.Eng (Aerospace)Calgary, Alberta, CanadaChristavia MK 1 C-GREN________________________________________________________________________________
Pietenpol-List: Re: aluminium, 5052 vs 2024
Original Posted By: Ed0248(at)aol.com
As long as there is no stress/load/primary structure depending on your cover, I don't see any problem with going with 5052. Just remember the above caveat. I know of a couple of WW II fighters that were skinned in condition "O" (dead soft). The reasoning was that if/when a bullet went through, no stress areas were developed around the hole, hence no cracking. A quick patch of tape, and off they went again. When time/circumstances allowed, the perforated plate was replaced or repaired. If you look closely at a WW II Spitfire, you will find that the fairings are attached with wood screws, into a backing bar of that genuine renewable resource, wood.Airplane people are not only dreamers, they're downright resourceful!Ed"I don't suffer from insanity...I enjoy every minute!" ________________________________________________________________________________
As long as there is no stress/load/primary structure depending on your cover, I don't see any problem with going with 5052. Just remember the above caveat. I know of a couple of WW II fighters that were skinned in condition "O" (dead soft). The reasoning was that if/when a bullet went through, no stress areas were developed around the hole, hence no cracking. A quick patch of tape, and off they went again. When time/circumstances allowed, the perforated plate was replaced or repaired. If you look closely at a WW II Spitfire, you will find that the fairings are attached with wood screws, into a backing bar of that genuine renewable resource, wood.Airplane people are not only dreamers, they're downright resourceful!Ed"I don't suffer from insanity...I enjoy every minute!" ________________________________________________________________________________
Pietenpol-List: Re:
Original Posted By: Steve Eldredge
I used to say that a little extra weight wouldn't hurt anything, and all of a sudden I had outgrown my blinkin' pants! If you've ever priced "fat boy" pants, you'll see how it hurts(Besides looking bad, unhealthy, and uncomfortable, that is) Save all the weight you can safely save on your airframe, and don't rely on brute force to get you around the sky. Since weight translates into power required, it'll also save you money on fuel.Ed ________________________________________________________________________________
I used to say that a little extra weight wouldn't hurt anything, and all of a sudden I had outgrown my blinkin' pants! If you've ever priced "fat boy" pants, you'll see how it hurts(Besides looking bad, unhealthy, and uncomfortable, that is) Save all the weight you can safely save on your airframe, and don't rely on brute force to get you around the sky. Since weight translates into power required, it'll also save you money on fuel.Ed ________________________________________________________________________________
> Re: aluminium, 5052 vs 2024
Original Posted By: walter evans
Hay Ken,Yes I would like to know what you are using on that cowling. As for my airplane.."an orphaned design" One could just about call it that. The plans were drawn up by the president of the EAA. I have written 3 letters for help, and 1 e-mail, and received one nice responce, but no help.The project is comming along well however.Bob>From: Ken Beanlands >Reply-To: Pietenpol Discussion >To: Pietenpol Discussion >Subject: Re: aluminium, 5052 vs 2024>Date: Wed, 01 Sep 1999 08:40:00 -0600 (MDT)>>I dont think it's the strength they are after as much as the hardness.>2024is a harder aluminum than the 5052 and will be far more resistant to>denting. You know, the dents that occur when the line boy drops the fuel>nozzle on your boot cowl. On the Christavia, however, I'm pretty sure that>they spec 0.025" 6061 for that area. I'll double check tonight for you.>You should find that this is similar in price to 2024.>>Is it still possible to get the designer's opinion or is this an orphanned>design.>>Ken.>>On Tue, 31 Aug 1999, oil can wrote:>> > I need to cover the upper cowling of my super ace in aluminium sheet.> >> > This is the area foreward of the cockpit, and behind the firewall, just> > under the wing. It is not a stressed part...mostly just keeps the wind >out.> >> > What I wonder is, can I substitute .025 5052 ( 1/2 the strength by my >a/c> > spruce catalog) for .025 2024 ?> >> > Would I be able to, if I were to go with .032 5052 ?> >> > I can get the 5052 locally for about 60.00 ,where the 2024 from my same> > local source requires a full 4 by 12 ft sheet at around 180.00 .> >> > Bob> >> >>>Ken Beanlands B.Eng (Aerospace)>Calgary, Alberta, Canada>Christavia MK 1 C-GREN>>>________________________________________________________________________________
Hay Ken,Yes I would like to know what you are using on that cowling. As for my airplane.."an orphaned design" One could just about call it that. The plans were drawn up by the president of the EAA. I have written 3 letters for help, and 1 e-mail, and received one nice responce, but no help.The project is comming along well however.Bob>From: Ken Beanlands >Reply-To: Pietenpol Discussion >To: Pietenpol Discussion >Subject: Re: aluminium, 5052 vs 2024>Date: Wed, 01 Sep 1999 08:40:00 -0600 (MDT)>>I dont think it's the strength they are after as much as the hardness.>2024is a harder aluminum than the 5052 and will be far more resistant to>denting. You know, the dents that occur when the line boy drops the fuel>nozzle on your boot cowl. On the Christavia, however, I'm pretty sure that>they spec 0.025" 6061 for that area. I'll double check tonight for you.>You should find that this is similar in price to 2024.>>Is it still possible to get the designer's opinion or is this an orphanned>design.>>Ken.>>On Tue, 31 Aug 1999, oil can wrote:>> > I need to cover the upper cowling of my super ace in aluminium sheet.> >> > This is the area foreward of the cockpit, and behind the firewall, just> > under the wing. It is not a stressed part...mostly just keeps the wind >out.> >> > What I wonder is, can I substitute .025 5052 ( 1/2 the strength by my >a/c> > spruce catalog) for .025 2024 ?> >> > Would I be able to, if I were to go with .032 5052 ?> >> > I can get the 5052 locally for about 60.00 ,where the 2024 from my same> > local source requires a full 4 by 12 ft sheet at around 180.00 .> >> > Bob> >> >>>Ken Beanlands B.Eng (Aerospace)>Calgary, Alberta, Canada>Christavia MK 1 C-GREN>>>________________________________________________________________________________
> Re: aluminium, 5052 vs 2024
Original Posted By: oil can [
On my Super Ace I used 2024 anyplace that wasn't a compound curve whichincluded the area between the firewall and the cockpit. For most of thecowling ahead of the firewall I used 5052 because of the forming required. Idon't remember the exact thicknesses, but .025-.032 sounds about right,although you need to go a little heavier(oops bad word) I mean thicker onany pieces requiring deep forming. I've got a couple of images on my webpage if you're interested.The original plans are very vague when it comes to the cowling and engineinstallation.Markhttp://members.tripod.com/~Mark_Lightsey/index.html-----Original Message-----Sent: Wednesday, September 01, 1999 10:46 PMSubject: Pietenpol-List: Re: aluminium, 5052 vs 2024Hay Ken,Yes I would like to know what you are using on that cowling. As for my airplane.."an orphaned design" One could just about call it that. The plans were drawn up by the president of the EAA. I have written 3 letters for help, and 1 e-mail, and received one nice responce, but no help.The project is comming along well however.Bob>From: Ken Beanlands >Reply-To: Pietenpol Discussion >To: Pietenpol Discussion >Subject: Re: aluminium, 5052 vs 2024>Date: Wed, 01 Sep 1999 08:40:00 -0600 (MDT)>>I dont think it's the strength they are after as much as the hardness.>2024is a harder aluminum than the 5052 and will be far more resistant to>denting. You know, the dents that occur when the line boy drops the fuel>nozzle on your boot cowl. On the Christavia, however, I'm pretty sure that>they spec 0.025" 6061 for that area. I'll double check tonight for you.>You should find that this is similar in price to 2024.>>Is it still possible to get the designer's opinion or is this an orphanned>design.>>Ken.>>On Tue, 31 Aug 1999, oil can wrote:>> > I need to cover the upper cowling of my super ace in aluminium sheet.> >> > This is the area foreward of the cockpit, and behind the firewall, just> > under the wing. It is not a stressed part...mostly just keeps the wind >out.> >> > What I wonder is, can I substitute .025 5052 ( 1/2 the strength by my >a/c> > spruce catalog) for .025 2024 ?> >> > Would I be able to, if I were to go with .032 5052 ?> >> > I can get the 5052 locally for about 60.00 ,where the 2024 from my same> > local source requires a full 4 by 12 ft sheet at around 180.00 .> >> > Bob> >> >>>Ken Beanlands B.Eng (Aerospace)>Calgary, Alberta, Canada>Christavia MK 1 C-GREN>>>5.5.2448.0">RE: aluminium, 5052 vs 2024On my Super Ace I used 2024 anyplace that wasn't acompound curve which included the area between the firewall and thecockpit. For most of the cowling ahead of the firewall I used 5052because of the forming required. I don't remember the exactthicknesses, but .025-.032 sounds about right, although you need to goa little heavier(oops bad word) I mean thicker on any pieces requiringdeep forming. I've got a couple of images on my web page if you'reinterested.The original plans are very vague when it comes tothe cowling and engine installation.MarkHREF"http://members.tripod.com/~Mark_Lightse ... --Original Message-----
On my Super Ace I used 2024 anyplace that wasn't a compound curve whichincluded the area between the firewall and the cockpit. For most of thecowling ahead of the firewall I used 5052 because of the forming required. Idon't remember the exact thicknesses, but .025-.032 sounds about right,although you need to go a little heavier(oops bad word) I mean thicker onany pieces requiring deep forming. I've got a couple of images on my webpage if you're interested.The original plans are very vague when it comes to the cowling and engineinstallation.Markhttp://members.tripod.com/~Mark_Lightsey/index.html-----Original Message-----Sent: Wednesday, September 01, 1999 10:46 PMSubject: Pietenpol-List: Re: aluminium, 5052 vs 2024Hay Ken,Yes I would like to know what you are using on that cowling. As for my airplane.."an orphaned design" One could just about call it that. The plans were drawn up by the president of the EAA. I have written 3 letters for help, and 1 e-mail, and received one nice responce, but no help.The project is comming along well however.Bob>From: Ken Beanlands >Reply-To: Pietenpol Discussion >To: Pietenpol Discussion >Subject: Re: aluminium, 5052 vs 2024>Date: Wed, 01 Sep 1999 08:40:00 -0600 (MDT)>>I dont think it's the strength they are after as much as the hardness.>2024is a harder aluminum than the 5052 and will be far more resistant to>denting. You know, the dents that occur when the line boy drops the fuel>nozzle on your boot cowl. On the Christavia, however, I'm pretty sure that>they spec 0.025" 6061 for that area. I'll double check tonight for you.>You should find that this is similar in price to 2024.>>Is it still possible to get the designer's opinion or is this an orphanned>design.>>Ken.>>On Tue, 31 Aug 1999, oil can wrote:>> > I need to cover the upper cowling of my super ace in aluminium sheet.> >> > This is the area foreward of the cockpit, and behind the firewall, just> > under the wing. It is not a stressed part...mostly just keeps the wind >out.> >> > What I wonder is, can I substitute .025 5052 ( 1/2 the strength by my >a/c> > spruce catalog) for .025 2024 ?> >> > Would I be able to, if I were to go with .032 5052 ?> >> > I can get the 5052 locally for about 60.00 ,where the 2024 from my same> > local source requires a full 4 by 12 ft sheet at around 180.00 .> >> > Bob> >> >>>Ken Beanlands B.Eng (Aerospace)>Calgary, Alberta, Canada>Christavia MK 1 C-GREN>>>5.5.2448.0">RE: aluminium, 5052 vs 2024On my Super Ace I used 2024 anyplace that wasn't acompound curve which included the area between the firewall and thecockpit. For most of the cowling ahead of the firewall I used 5052because of the forming required. I don't remember the exactthicknesses, but .025-.032 sounds about right, although you need to goa little heavier(oops bad word) I mean thicker on any pieces requiringdeep forming. I've got a couple of images on my web page if you'reinterested.The original plans are very vague when it comes tothe cowling and engine installation.MarkHREF"http://members.tripod.com/~Mark_Lightse ... --Original Message-----
> Re: aluminium, 5052 vs 2024
Original Posted By: "David B. Schober"
Areas that need a lot of forming, go to 3003. All the cowl pieces on myHoward are 3003.Lightsey, Mark - TP2MAL wrote:>>> On my Super Ace I used 2024 anyplace that wasn't a compound curve> which included the area between the firewall and the cockpit. For most> of the cowling ahead of the firewall I used 5052 because of the> forming required. I don't remember the exact thicknesses, but> .025-.032 sounds about right, although you need to go a little> heavier(oops bad word) I mean thicker on any pieces requiring deep> forming. I've got a couple of images on my web page if you're> interested.>> The original plans are very vague when it comes to the cowling and> engine installation.> Mark> http://members.tripod.com/~Mark_Lightsey/index.html>> -----Original Message-----> Sent: Wednesday, September 01, 1999 10:46 PM> To: Pietenpol Discussion> Subject: Re: aluminium, 5052 vs 2024>> Hay Ken,> Yes I would like to know what you are using on that cowling. As for my>> airplane.."an orphaned design" One could just about call it that. The> plans> were drawn up by the president of the EAA. I have written 3 letters> for> help, and 1 e-mail, and received one nice responce, but no help.> The project is comming along well however.>> Bob>> >From: Ken Beanlands > >Reply-To: Pietenpol Discussion > >To: Pietenpol Discussion > >Subject: Re: aluminium, 5052 vs 2024> >Date: Wed, 01 Sep 1999 08:40:00 -0600 (MDT)> >> >I dont think it's the strength they are after as much as the> hardness.> >2024is a harder aluminum than the 5052 and will be far more resistant> to> >denting. You know, the dents that occur when the line boy drops the> fuel> >nozzle on your boot cowl. On the Christavia, however, I'm pretty sure> that> >they spec 0.025" 6061 for that area. I'll double check tonight for> you.> >You should find that this is similar in price to 2024.> >> >Is it still possible to get the designer's opinion or is this an> orphanned> >design.> >> >Ken.> >> >On Tue, 31 Aug 1999, oil can wrote:> >> > > I need to cover the upper cowling of my super ace in aluminium> sheet.> > >> > > This is the area foreward of the cockpit, and behind the firewall,> just> > > under the wing. It is not a stressed part...mostly just keeps the> wind> >out.> > >> > > What I wonder is, can I substitute .025 5052 ( 1/2 the strength> by my> >a/c> > > spruce catalog) for .025 2024 ?> > >> > > Would I be able to, if I were to go with .032 5052 ?> > >> > > I can get the 5052 locally for about 60.00 ,where the 2024 from my> same> > > local source requires a full 4 by 12 ft sheet at around 180.00 .> > >> > > Bob> > >> > >> >> >Ken Beanlands B.Eng (Aerospace)> >Calgary, Alberta, Canada> >Christavia MK 1 C-GREN> >> >> >>Areas that need a lot of forming, go to 3003. All the cowl pieces on myHoward are 3003.Lightsey, Mark - TP2MAL wrote:On my Super Ace I used 2024 anyplace that wasn't a compoundcurve which included the area between the firewall and the cockpit. Formost of the cowling ahead of the firewall I used 5052 because of the formingrequired. I don't remember the exact thicknesses, but .025-.032 soundsabout right, although you need to go a little heavier(oops bad word) Imean thicker on any pieces requiring deep forming. I've got a couple ofimages on my web page if you're interested.The original plans are very vague when it comes to thecowling and engine installation.Markhttp://members.tripod.com/~Mark_Lightsey/index.html-----Original Message-----Sent: Wednesday, September 01, 1999 10:46 PMTo: Pietenpol DiscussionSubject: Pietenpol-List: Re: aluminium, 5052 vs 2024Hay Ken,Yes I would like to know what you are using on that cowling.As for myairplane.."an orphaned design" One could just about callit that. The planswere drawn up by the president of the EAA. I have written3 letters forhelp, and 1 e-mail, and received one nice responce, butno help.The project is comming along well however.Bob>From: Ken Beanlands kbeanlan(at)spots.ab.ca>>Reply-To: Pietenpol Discussion piet(at)byu.edu>>To: Pietenpol Discussion piet(at)byu.edu>>Subject: Re: aluminium, 5052 vs 2024>Date: Wed, 01 Sep 1999 08:40:00 -0600 (MDT)>>I dont think it's the strength they are after as muchas the hardness.>2024is a harder aluminum than the 5052 and will be farmore resistant to>denting. You know, the dents that occur when the lineboy drops the fuel>nozzle on your boot cowl. On the Christavia, however,I'm pretty sure that>they spec 0.025" 6061 for that area. I'll double checktonight for you.>You should find that this is similar in price to 2024.>>Is it still possible to get the designer's opinion oris this an orphanned>design.>>Ken.>>On Tue, 31 Aug 1999, oil can wrote:>> > I need to cover the upper cowling of my super acein aluminium sheet.> >> > This is the area foreward of the cockpit, and behindthe firewall, just> > under the wing. It is not a stressed part...mostlyjust keeps the wind>out.> >> > What I wonder is, can I substitute .0255052 ( 1/2 the strength by my>a/c> > spruce catalog) for .025 2024 ?> >> > Would I be able to, if I were to go with .0325052 ?> >> > I can get the 5052 locally for about 60.00 ,wherethe 2024 from my same> > local source requires a full 4 by 12 ft sheet ataround 180.00 .> >> > Bob> >> >>>Ken Beanlands B.Eng (Aerospace)>Calgary, Alberta, Canada>Christavia MK 1 C-GREN>http://www.spots.ab.ca/~kbeanlan>>>____ ... __________
Areas that need a lot of forming, go to 3003. All the cowl pieces on myHoward are 3003.Lightsey, Mark - TP2MAL wrote:>>> On my Super Ace I used 2024 anyplace that wasn't a compound curve> which included the area between the firewall and the cockpit. For most> of the cowling ahead of the firewall I used 5052 because of the> forming required. I don't remember the exact thicknesses, but> .025-.032 sounds about right, although you need to go a little> heavier(oops bad word) I mean thicker on any pieces requiring deep> forming. I've got a couple of images on my web page if you're> interested.>> The original plans are very vague when it comes to the cowling and> engine installation.> Mark> http://members.tripod.com/~Mark_Lightsey/index.html>> -----Original Message-----> Sent: Wednesday, September 01, 1999 10:46 PM> To: Pietenpol Discussion> Subject: Re: aluminium, 5052 vs 2024>> Hay Ken,> Yes I would like to know what you are using on that cowling. As for my>> airplane.."an orphaned design" One could just about call it that. The> plans> were drawn up by the president of the EAA. I have written 3 letters> for> help, and 1 e-mail, and received one nice responce, but no help.> The project is comming along well however.>> Bob>> >From: Ken Beanlands > >Reply-To: Pietenpol Discussion > >To: Pietenpol Discussion > >Subject: Re: aluminium, 5052 vs 2024> >Date: Wed, 01 Sep 1999 08:40:00 -0600 (MDT)> >> >I dont think it's the strength they are after as much as the> hardness.> >2024is a harder aluminum than the 5052 and will be far more resistant> to> >denting. You know, the dents that occur when the line boy drops the> fuel> >nozzle on your boot cowl. On the Christavia, however, I'm pretty sure> that> >they spec 0.025" 6061 for that area. I'll double check tonight for> you.> >You should find that this is similar in price to 2024.> >> >Is it still possible to get the designer's opinion or is this an> orphanned> >design.> >> >Ken.> >> >On Tue, 31 Aug 1999, oil can wrote:> >> > > I need to cover the upper cowling of my super ace in aluminium> sheet.> > >> > > This is the area foreward of the cockpit, and behind the firewall,> just> > > under the wing. It is not a stressed part...mostly just keeps the> wind> >out.> > >> > > What I wonder is, can I substitute .025 5052 ( 1/2 the strength> by my> >a/c> > > spruce catalog) for .025 2024 ?> > >> > > Would I be able to, if I were to go with .032 5052 ?> > >> > > I can get the 5052 locally for about 60.00 ,where the 2024 from my> same> > > local source requires a full 4 by 12 ft sheet at around 180.00 .> > >> > > Bob> > >> > >> >> >Ken Beanlands B.Eng (Aerospace)> >Calgary, Alberta, Canada> >Christavia MK 1 C-GREN> >> >> >>Areas that need a lot of forming, go to 3003. All the cowl pieces on myHoward are 3003.Lightsey, Mark - TP2MAL wrote:On my Super Ace I used 2024 anyplace that wasn't a compoundcurve which included the area between the firewall and the cockpit. Formost of the cowling ahead of the firewall I used 5052 because of the formingrequired. I don't remember the exact thicknesses, but .025-.032 soundsabout right, although you need to go a little heavier(oops bad word) Imean thicker on any pieces requiring deep forming. I've got a couple ofimages on my web page if you're interested.The original plans are very vague when it comes to thecowling and engine installation.Markhttp://members.tripod.com/~Mark_Lightsey/index.html-----Original Message-----Sent: Wednesday, September 01, 1999 10:46 PMTo: Pietenpol DiscussionSubject: Pietenpol-List: Re: aluminium, 5052 vs 2024Hay Ken,Yes I would like to know what you are using on that cowling.As for myairplane.."an orphaned design" One could just about callit that. The planswere drawn up by the president of the EAA. I have written3 letters forhelp, and 1 e-mail, and received one nice responce, butno help.The project is comming along well however.Bob>From: Ken Beanlands kbeanlan(at)spots.ab.ca>>Reply-To: Pietenpol Discussion piet(at)byu.edu>>To: Pietenpol Discussion piet(at)byu.edu>>Subject: Re: aluminium, 5052 vs 2024>Date: Wed, 01 Sep 1999 08:40:00 -0600 (MDT)>>I dont think it's the strength they are after as muchas the hardness.>2024is a harder aluminum than the 5052 and will be farmore resistant to>denting. You know, the dents that occur when the lineboy drops the fuel>nozzle on your boot cowl. On the Christavia, however,I'm pretty sure that>they spec 0.025" 6061 for that area. I'll double checktonight for you.>You should find that this is similar in price to 2024.>>Is it still possible to get the designer's opinion oris this an orphanned>design.>>Ken.>>On Tue, 31 Aug 1999, oil can wrote:>> > I need to cover the upper cowling of my super acein aluminium sheet.> >> > This is the area foreward of the cockpit, and behindthe firewall, just> > under the wing. It is not a stressed part...mostlyjust keeps the wind>out.> >> > What I wonder is, can I substitute .0255052 ( 1/2 the strength by my>a/c> > spruce catalog) for .025 2024 ?> >> > Would I be able to, if I were to go with .0325052 ?> >> > I can get the 5052 locally for about 60.00 ,wherethe 2024 from my same> > local source requires a full 4 by 12 ft sheet ataround 180.00 .> >> > Bob> >> >>>Ken Beanlands B.Eng (Aerospace)>Calgary, Alberta, Canada>Christavia MK 1 C-GREN>http://www.spots.ab.ca/~kbeanlan>>>____ ... __________
> > Re: aluminium, 5052 vs 2024
Original Posted By: ToySat(at)aol.com
Sorry to say, they spec 0.020 or 0.025 2024-t3. BUMMER!KenOn Wed, 1 Sep 1999, oil can wrote:> Hay Ken,> Yes I would like to know what you are using on that cowling. As for my > airplane.."an orphaned design" One could just about call it that. The plans > were drawn up by the president of the EAA. I have written 3 letters for > help, and 1 e-mail, and received one nice responce, but no help.> The project is comming along well however.> > Bob> > >From: Ken Beanlands > >Reply-To: Pietenpol Discussion > >To: Pietenpol Discussion > >Subject: Re: aluminium, 5052 vs 2024> >Date: Wed, 01 Sep 1999 08:40:00 -0600 (MDT)> >> >I dont think it's the strength they are after as much as the hardness.> >2024is a harder aluminum than the 5052 and will be far more resistant to> >denting. You know, the dents that occur when the line boy drops the fuel> >nozzle on your boot cowl. On the Christavia, however, I'm pretty sure that> >they spec 0.025" 6061 for that area. I'll double check tonight for you.> >You should find that this is similar in price to 2024.> >> >Is it still possible to get the designer's opinion or is this an orphanned> >design.> >> >Ken.> >> >On Tue, 31 Aug 1999, oil can wrote:> >> > > I need to cover the upper cowling of my super ace in aluminium sheet.> > >> > > This is the area foreward of the cockpit, and behind the firewall, just> > > under the wing. It is not a stressed part...mostly just keeps the wind > >out.> > >> > > What I wonder is, can I substitute .025 5052 ( 1/2 the strength by my > >a/c> > > spruce catalog) for .025 2024 ?> > >> > > Would I be able to, if I were to go with .032 5052 ?> > >> > > I can get the 5052 locally for about 60.00 ,where the 2024 from my same> > > local source requires a full 4 by 12 ft sheet at around 180.00 .> > >> > > Bob> > >> > >> >> >Ken Beanlands B.Eng (Aerospace)> >Calgary, Alberta, Canada> >Christavia MK 1 C-GREN> >> >> >> > Ken Beanlands B.Eng (Aerospace)Calgary, Alberta, CanadaChristavia MK 1 C-GREN________________________________________________________________________________
Sorry to say, they spec 0.020 or 0.025 2024-t3. BUMMER!KenOn Wed, 1 Sep 1999, oil can wrote:> Hay Ken,> Yes I would like to know what you are using on that cowling. As for my > airplane.."an orphaned design" One could just about call it that. The plans > were drawn up by the president of the EAA. I have written 3 letters for > help, and 1 e-mail, and received one nice responce, but no help.> The project is comming along well however.> > Bob> > >From: Ken Beanlands > >Reply-To: Pietenpol Discussion > >To: Pietenpol Discussion > >Subject: Re: aluminium, 5052 vs 2024> >Date: Wed, 01 Sep 1999 08:40:00 -0600 (MDT)> >> >I dont think it's the strength they are after as much as the hardness.> >2024is a harder aluminum than the 5052 and will be far more resistant to> >denting. You know, the dents that occur when the line boy drops the fuel> >nozzle on your boot cowl. On the Christavia, however, I'm pretty sure that> >they spec 0.025" 6061 for that area. I'll double check tonight for you.> >You should find that this is similar in price to 2024.> >> >Is it still possible to get the designer's opinion or is this an orphanned> >design.> >> >Ken.> >> >On Tue, 31 Aug 1999, oil can wrote:> >> > > I need to cover the upper cowling of my super ace in aluminium sheet.> > >> > > This is the area foreward of the cockpit, and behind the firewall, just> > > under the wing. It is not a stressed part...mostly just keeps the wind > >out.> > >> > > What I wonder is, can I substitute .025 5052 ( 1/2 the strength by my > >a/c> > > spruce catalog) for .025 2024 ?> > >> > > Would I be able to, if I were to go with .032 5052 ?> > >> > > I can get the 5052 locally for about 60.00 ,where the 2024 from my same> > > local source requires a full 4 by 12 ft sheet at around 180.00 .> > >> > > Bob> > >> > >> >> >Ken Beanlands B.Eng (Aerospace)> >Calgary, Alberta, Canada> >Christavia MK 1 C-GREN> >> >> >> > Ken Beanlands B.Eng (Aerospace)Calgary, Alberta, CanadaChristavia MK 1 C-GREN________________________________________________________________________________