Original Posted By: "Jack Phillips (EUS)"
I remember a while back a discussion about using 1/2" spars for the winginstead of using 1" spars and routing them, and I'm having trouble find theanswer in the archives. my question is can you use the 1/2" spar direct ordo you need to put 1/2"X3/4" capstrip on the top and bottom ends to make itan I-beam?? Also, would ribs have to be modified in any way for eitherconfiguration??Hopefully someone will understand this question and if you have any furtherquestions, please e-mail me. Thanks! --ShawnGulfport, MS________________________________________________________________________________
Pietenpol-List: 1/2" Wing Spars
owner-pietenpol-list-server@mat Pietenpol-List:
Original Posted By: "Greg Cardinal"
11:05:36 AMI don't know that a 1/2 inch spar is strong enough. Bernard builtwith a 3/4 in that was laminated with 3/4 x 3/4 stock. The top andthe bottom of the spar carry most of the load. The center has only toresist shear forces. Only putting a 1/2 x 3/4 cap top and bottomprovides additional strength, but it is PROBABLY getting into thebottom end or below of the strength that you want. Why not go alittle heavier? "Shawn" To: Sent by: cc: owner-pietenpol-list-server@mat Subject: Pietenpol-List:1/2" Wing Spars ronics.com 01/12/2001 09:19 AM Please respond to pietenpol-list I remember a while back a discussion about using 1/2" spars for thewinginstead of using 1" spars and routing them, and I'm having troublefind theanswer in the archives. my question is can you use the 1/2" spardirect ordo you need to put 1/2"X3/4" capstrip on the top and bottom ends tomake itan I-beam?? Also, would ribs have to be modified in any way for eitherconfiguration??Hopefully someone will understand this question and if you have anyfurtherquestions, please e-mail me. Thanks! --ShawnGulfport, MS________________________________________________________________________________Date: Fri, 12 Jan 2001 10:21:43 -0600
11:05:36 AMI don't know that a 1/2 inch spar is strong enough. Bernard builtwith a 3/4 in that was laminated with 3/4 x 3/4 stock. The top andthe bottom of the spar carry most of the load. The center has only toresist shear forces. Only putting a 1/2 x 3/4 cap top and bottomprovides additional strength, but it is PROBABLY getting into thebottom end or below of the strength that you want. Why not go alittle heavier? "Shawn" To: Sent by: cc: owner-pietenpol-list-server@mat Subject: Pietenpol-List:1/2" Wing Spars ronics.com 01/12/2001 09:19 AM Please respond to pietenpol-list I remember a while back a discussion about using 1/2" spars for thewinginstead of using 1" spars and routing them, and I'm having troublefind theanswer in the archives. my question is can you use the 1/2" spardirect ordo you need to put 1/2"X3/4" capstrip on the top and bottom ends tomake itan I-beam?? Also, would ribs have to be modified in any way for eitherconfiguration??Hopefully someone will understand this question and if you have anyfurtherquestions, please e-mail me. Thanks! --ShawnGulfport, MS________________________________________________________________________________Date: Fri, 12 Jan 2001 10:21:43 -0600
Re: Pietenpol-List: 1/2" Wing Spars
Original Posted By: Michael D Cuy
Re: Pietenpol-List: A-65 Exhaust
Original Posted By: Jack Phillips (EUS)
----- Original Message -----
----- Original Message -----
Re: Pietenpol-List: A-65 Exhaust
Original Posted By: "walter evans"
Walt, After you get done playing with your welding, make sure to let us all know of your success. I guess really time will tell, but I really think you on to something with the homemade exhaust!GaryBuilding fuselage & piecing together an A65.Get your FREE download of MSN Explorer at http://explorer.msn.com________________________________________________________________________________
Walt, After you get done playing with your welding, make sure to let us all know of your success. I guess really time will tell, but I really think you on to something with the homemade exhaust!GaryBuilding fuselage & piecing together an A65.Get your FREE download of MSN Explorer at http://explorer.msn.com________________________________________________________________________________
Re: Pietenpol-List: A-65 Exhaust
Original Posted By: "Gary Meadows"
Gary,My mentor had put me on to these pipes when I had to fabricate pipes for a1/2 VW that he had built for me. It seems to be all the neat stuff in aninexpensive part,,,kind of like a kit. If you buy just the flanges,they're about $7.00 apiece. Then the pipes with radiis bends aren't cheapeither.Only difference is that the pipe is .050" wall, compared to .035" on the"from the factory " aircraft pipes. . But Tony B. talks about automotivepipe in his books, and says alot of people use them. Maybe the thicker wallwill help with the cracking problem that was discussed just before.walt---------------------------------------------------------- Original Message -----
Gary,My mentor had put me on to these pipes when I had to fabricate pipes for a1/2 VW that he had built for me. It seems to be all the neat stuff in aninexpensive part,,,kind of like a kit. If you buy just the flanges,they're about $7.00 apiece. Then the pipes with radiis bends aren't cheapeither.Only difference is that the pipe is .050" wall, compared to .035" on the"from the factory " aircraft pipes. . But Tony B. talks about automotivepipe in his books, and says alot of people use them. Maybe the thicker wallwill help with the cracking problem that was discussed just before.walt---------------------------------------------------------- Original Message -----
Re: Pietenpol-List: A-65 Exhaust
Original Posted By: "Shawn"
>>>>> Hi Mort,>>>> The Continental A-65 is an air-cooled four cylinder opposed aircraft>engine of 171 cubic inches, putting out 65 horsepower, and weighing about>170 lbs.>>Thanks for the information.>>I have been told that the Model A engine, complete with radiator weighs 285>lbs, and I shouldn't use a VW or an aircraft engine smaller than the C-85>because a lighter weight engine would cause c.g. problems.>>How do you intend to compensate for the 115 lb weight difference betweenthe>A-65 and Model A engines? Won't the c.g. be too far aft with the lighter>engine?>>Mort>I believe you are a little heavy on the "A" engine. I calculated about235lbs without the water when I converted form an "A" to a 0200.For what it's worth, I would suggest that if you are contemplating an A 65built the short fuselage. You willl have less problems with the CG. You playwith the CG by moving the wing back &/or the engine fwd.WIth the 0200, I moved the CG of the 0200 11 inches fwd of the "A" CG & thewing back 31/2 inches. My CG is at 15.5 inches.Mike B Piet N687MB ( Mr Sam )________________________________________________________________________________
>>>>> Hi Mort,>>>> The Continental A-65 is an air-cooled four cylinder opposed aircraft>engine of 171 cubic inches, putting out 65 horsepower, and weighing about>170 lbs.>>Thanks for the information.>>I have been told that the Model A engine, complete with radiator weighs 285>lbs, and I shouldn't use a VW or an aircraft engine smaller than the C-85>because a lighter weight engine would cause c.g. problems.>>How do you intend to compensate for the 115 lb weight difference betweenthe>A-65 and Model A engines? Won't the c.g. be too far aft with the lighter>engine?>>Mort>I believe you are a little heavy on the "A" engine. I calculated about235lbs without the water when I converted form an "A" to a 0200.For what it's worth, I would suggest that if you are contemplating an A 65built the short fuselage. You willl have less problems with the CG. You playwith the CG by moving the wing back &/or the engine fwd.WIth the 0200, I moved the CG of the 0200 11 inches fwd of the "A" CG & thewing back 31/2 inches. My CG is at 15.5 inches.Mike B Piet N687MB ( Mr Sam )________________________________________________________________________________
Re: Pietenpol-List: 1/2" Wing Spars
Original Posted By: "Michael D Cuy"
Thanks everyone for your answers... I understand alot better now!!! =)Thanks--Shawn----- Original Message -----
Thanks everyone for your answers... I understand alot better now!!! =)Thanks--Shawn----- Original Message -----
Re: Pietenpol-List: 1/2" Wing Spars
Original Posted By: "Gary Meadows"
Subject: Re: Pietenpol-List: 1/2" Wing SparsIn a message dated 01/12/2001 7:26:51 PM Central Standard Time, devildog(at)digiscape.com writes:>.......and thanks also to that silver-tongue devil Mike Cuy...he always comes through as the list's diplomat !!! Don________________________________________________________________________________
Subject: Re: Pietenpol-List: 1/2" Wing SparsIn a message dated 01/12/2001 7:26:51 PM Central Standard Time, devildog(at)digiscape.com writes:>.......and thanks also to that silver-tongue devil Mike Cuy...he always comes through as the list's diplomat !!! Don________________________________________________________________________________
Re: Pietenpol-List: A-65 Exhaust
Original Posted By: JOEL CARROLL
Walt, Thanks for that info, I'll bet you're right about the thicker wall stuff being more resistant to cracking. I'm a ways off from that right now, but I' putting together an A-65 and any way to safely shave a penny or two is very good! This sounds like a savings, plus a possible increase in the quality of the part - that a real winner!Thanks,GaryGet your FREE download of MSN Explorer at http://explorer.msn.com________________________________________________________________________________Date: Fri, 12 Jan 2001 21:25:03 -0800 (PST)
Walt, Thanks for that info, I'll bet you're right about the thicker wall stuff being more resistant to cracking. I'm a ways off from that right now, but I' putting together an A-65 and any way to safely shave a penny or two is very good! This sounds like a savings, plus a possible increase in the quality of the part - that a real winner!Thanks,GaryGet your FREE download of MSN Explorer at http://explorer.msn.com________________________________________________________________________________Date: Fri, 12 Jan 2001 21:25:03 -0800 (PST)