Original Posted By: "GrantZ"
I finally folded on this subject after reading the poly fiber manual about it.Addresses this exactly and in no uncertain terms says it's completely required.Even addresses not using uv protection on ultralights because of weight. It's kindof convincing.. And they recommend a compromise. It seems the best compromise would be skimping on the undersides of things, and/oron less critical things like the fuse.On my chief I'm gonna paint it one of three colors that has uv protection builtin. Will save about five pounds and a thousand bucks. So, because they.say so... ? I don't know. I've just decided to agree. I wouldrecommend reading the poly fiber book on it though.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: W & B, CG, and LG location question
Pietenpol-List: W & B, CG, and LG location question
Pietenpol-List: Re: W & B, CG, and LG location question
Original Posted By: "William Wynne"
I am getting ready to start on my landing gear. I am planning on using the splitaxle version with 6" Cleveland wheels.I have read most if not all of the posts in this forum and obtained and digestedthe Doc Mosher collection of WWs articles on the topic.A question still remains. If main wheel location (0 to 3" behind wing LE) is dependenton wing location, and wing location (cabane tilt to get CG in proper range) is dependenton final W & B and final W & B requires a completed aircraft, how doesone go about determining the correct geometry and dimensions for constructingthe LG before the aircraft is completed?I would certainly like to avoid building the LG now using roughly estimated dimensionsonly to have to rebuild it when aircraft is finished.This really feels like a chicken or egg type situation.Thoughts!ThanxGrant ZiebellSavannah, TNPlodding ahead but making progress!Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: W & B, CG, and LG location question
I am getting ready to start on my landing gear. I am planning on using the splitaxle version with 6" Cleveland wheels.I have read most if not all of the posts in this forum and obtained and digestedthe Doc Mosher collection of WWs articles on the topic.A question still remains. If main wheel location (0 to 3" behind wing LE) is dependenton wing location, and wing location (cabane tilt to get CG in proper range) is dependenton final W & B and final W & B requires a completed aircraft, how doesone go about determining the correct geometry and dimensions for constructingthe LG before the aircraft is completed?I would certainly like to avoid building the LG now using roughly estimated dimensionsonly to have to rebuild it when aircraft is finished.This really feels like a chicken or egg type situation.Thoughts!ThanxGrant ZiebellSavannah, TNPlodding ahead but making progress!Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Pietenpol-List: Re: W & B, CG, and LG location question
Original Posted By: "GrantZ"
plett57(at)hotmail.com wrote:> The plans came with the Pietenol. The Piet is long gone and I still have plans.By count there a 19 sheets all together. I no longer need the plans. Whatis something like this worth and is anyone interested?> > DanD'oh. Interesting this posted me as a guest.--------Dan PlettN28WHRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: W & B, CG, and LG location question
plett57(at)hotmail.com wrote:> The plans came with the Pietenol. The Piet is long gone and I still have plans.By count there a 19 sheets all together. I no longer need the plans. Whatis something like this worth and is anyone interested?> > DanD'oh. Interesting this posted me as a guest.--------Dan PlettN28WHRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Pietenpol-List: Re: W & B, CG, and LG location question
Original Posted By: "William Wynne"
Then I think I will have you covered!RaySent from my iPad> On Sep 2, 2014, at 7:40 PM, Jim Boyer wrote:> > > Hi Ray,> No I have to mount the pitot tube and have to make a L bracket to mount it. That is what I will be working on tomorrow. I also have to order about 18 feet of 1/4 inch Nylon II tubing for the pitot/static tube. Then the wings are ready to cover. I only have everything primed right now so when wings are covered and primed then it is time for color coats.> > If any of your pieces of aluminium are at least 4 1/2 inches or longer that will work too.> Thanks,> Jim> > > 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D> ________________________________________________________________________________Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Then I think I will have you covered!RaySent from my iPad> On Sep 2, 2014, at 7:40 PM, Jim Boyer wrote:> > > Hi Ray,> No I have to mount the pitot tube and have to make a L bracket to mount it. That is what I will be working on tomorrow. I also have to order about 18 feet of 1/4 inch Nylon II tubing for the pitot/static tube. Then the wings are ready to cover. I only have everything primed right now so when wings are covered and primed then it is time for color coats.> > If any of your pieces of aluminium are at least 4 1/2 inches or longer that will work too.> Thanks,> Jim> > > 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D> ________________________________________________________________________________Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Pietenpol-List: Re: W & B, CG, and LG location question
Original Posted By: "GrantZ"
John-here's how I installed my louvers in my 2024 T3 cowling. I found a local machine shop (from car show guys at car shows)who had louvers punched in their hot rod hoods and the shop had various sized dies but they tore the edges of the 2024 material.I gave the shop 000 dead soft aluminum and the louvers punched very cleanly. The attached photos show how I then attached the 000 aluminumto the cowling in 3 areas and after almost 500 hours of flying and 16 years there have been no cracks in the vents.Mike C.[cid:image001.jpg(at)01CFC844.42D8A7A0] [cid:image002.jpg(at)01CFC844.42D8A7A0]________________________________________________________________________________Subject: Pietenpol-List: Re: W & B, CG, and LG location question
John-here's how I installed my louvers in my 2024 T3 cowling. I found a local machine shop (from car show guys at car shows)who had louvers punched in their hot rod hoods and the shop had various sized dies but they tore the edges of the 2024 material.I gave the shop 000 dead soft aluminum and the louvers punched very cleanly. The attached photos show how I then attached the 000 aluminumto the cowling in 3 areas and after almost 500 hours of flying and 16 years there have been no cracks in the vents.Mike C.[cid:image001.jpg(at)01CFC844.42D8A7A0] [cid:image002.jpg(at)01CFC844.42D8A7A0]________________________________________________________________________________Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Pietenpol-List: Re: W & B, CG, and LG location question
Original Posted By: "William Wynne"
Jim,It may be a little out of your way, but Barnwell SC is about 120 miles from Florence,and it is the home of the Pietenpols of PF Beck and Don Harper. You canget a look at Don's plane at this link:http://flycorvair.net/2013/01/17/nwe-pi ... per-sc/And there are a number of Photos of PF and his plane at this story about the 'CherryGrove Trophy' which we award to the Corvair pilot of the year. (We awardedit to PF in 2011, and Kevin Purtee and Shelley Tumino in 2012.) :http://flycorvair.net/2013/01/18/the-ch ... trophy/For the 5th consecutive year we are holding the November college at Barnwell, onthe 7-9th. PF has said he would like to have more Piets there, of all enginepersuasions. You can read about it at this link:http://flycorvair.net/2014/06/19/corvai ... illiamRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Jim,It may be a little out of your way, but Barnwell SC is about 120 miles from Florence,and it is the home of the Pietenpols of PF Beck and Don Harper. You canget a look at Don's plane at this link:http://flycorvair.net/2013/01/17/nwe-pi ... per-sc/And there are a number of Photos of PF and his plane at this story about the 'CherryGrove Trophy' which we award to the Corvair pilot of the year. (We awardedit to PF in 2011, and Kevin Purtee and Shelley Tumino in 2012.) :http://flycorvair.net/2013/01/18/the-ch ... trophy/For the 5th consecutive year we are holding the November college at Barnwell, onthe 7-9th. PF has said he would like to have more Piets there, of all enginepersuasions. You can read about it at this link:http://flycorvair.net/2014/06/19/corvai ... illiamRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Pietenpol-List: Re: W & B, CG, and LG location question
Original Posted By: "bubbleboy"
Grant,Here is the rough (+ or - 3/4") basic CG for your plane. We can work this a littlecloser with a fine calculation in a second part, but you could easily buildwith confidence off this data.------------Looking at the differences: One way to look at having 2" in the front fuselagebay is to consider it as having a motor mount that is 2" longer. In the firstpart of the series that Ryan and I wrote, we showed that making a loner motormount has far less effect than most people think. In the sample we did, movingan A-65 4" forward netted only a 1" change in the EWCG. On your aircraft, havingthe engine sitting 2" further forward will roughly produce only a 1/2" forwardshift over Kevin's installation, not much, and it is in a favorable direction..On your Pilot Seat Location, as you mentioned, a small part of the difference isleaning the seat back. This will not produce a substantial pilot CG shift, atonly part of the pilots mass is leaning back, and then it is only moving halfthe distance that the top of the seat back is shifted, if you left the seatbottom in the plans location. This difference is negligible, even with a 225 poundpilot..If you look at the Corvair notes for Kevin's plane (#3), you can see the leadingedge of his wing is 12.625" behind the firewall. To simulate this location onyour longer fuselage, you could set your leading edge at 14.625" If the #3 pilotweight range is 151-310 pounds, this would look like 165-325 with your longerfuselage. That's not bad, because it would put you flying at 225 pounds inthe middle of the Pietenpol's 15-20" CG range. There is no benefit to just squeakingin the aft end of the range, you are far better off operating in themiddle of it..The #3 planes landing gear is 5.5" behind the leading edge, or 5.5 + 12.625" =18.125" behind the firewall. If you wanted yours in the same spot, it would be20.125" back from your firewall. Personally, I think this is too far back. Ifyou are using 6x6's with hyd. brakes, putting the axle at your leading edge wouldmake it 14.625" aft of your firewall. the furthest back I would considerputting it is 17.625" behind your firewall. .For the second part of this, the fine calculation, I am going to need to retrievesome raw data from Ryan's archives. Starting with the weight on the scalesof plane #3, we can do an exact calculation to account for the shift in engineposition caused by having a 2" longer fuselage. The math on this will look likethis:1) Retrieve EWCG of plane #32) Remove 250 pounds of engine/prop/cowl from its CG location 24" ahead of thefirewall 250x(24" + the 12.625" for FW to LE)3) Replace the 250 pound motor installation 2" forward 250 x (24" + 14.625")4) Recalculate aircraft CG location with 225 pilot.5) Recalculate Min and Max allowable pilot weights..The fine tuned calculation should be within a half inch of the measured CG of theplane when it is done. You can hit a lot closer than this if we were dealingwith a comparison between two metal kit aircraft, but builder variations onPiet's don't allow that level of prediction. Still, even the rough first stageplan outlined above is vastly better than the pilots who had a rude awakeningwhen their planes hit the scales, and they found out that 30 minutes of readingand planning is a lot easier than weeks of moving the wing, or building newgear or both. .BTW, here is a good look at one of our powder coated, high thrust line mounts. It is on Mark Chouinard's plane. http://flycorvair.net/2013/10/17/pieten ... -airframe/ We make all of these mounts are 33" MML. The is the same mount that is also on Kevin Purtee's, Bob Dewenter's, Terry Hand's, Dave Aldrich's and Jim Boyer's builds.-ww.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Grant,Here is the rough (+ or - 3/4") basic CG for your plane. We can work this a littlecloser with a fine calculation in a second part, but you could easily buildwith confidence off this data.------------Looking at the differences: One way to look at having 2" in the front fuselagebay is to consider it as having a motor mount that is 2" longer. In the firstpart of the series that Ryan and I wrote, we showed that making a loner motormount has far less effect than most people think. In the sample we did, movingan A-65 4" forward netted only a 1" change in the EWCG. On your aircraft, havingthe engine sitting 2" further forward will roughly produce only a 1/2" forwardshift over Kevin's installation, not much, and it is in a favorable direction..On your Pilot Seat Location, as you mentioned, a small part of the difference isleaning the seat back. This will not produce a substantial pilot CG shift, atonly part of the pilots mass is leaning back, and then it is only moving halfthe distance that the top of the seat back is shifted, if you left the seatbottom in the plans location. This difference is negligible, even with a 225 poundpilot..If you look at the Corvair notes for Kevin's plane (#3), you can see the leadingedge of his wing is 12.625" behind the firewall. To simulate this location onyour longer fuselage, you could set your leading edge at 14.625" If the #3 pilotweight range is 151-310 pounds, this would look like 165-325 with your longerfuselage. That's not bad, because it would put you flying at 225 pounds inthe middle of the Pietenpol's 15-20" CG range. There is no benefit to just squeakingin the aft end of the range, you are far better off operating in themiddle of it..The #3 planes landing gear is 5.5" behind the leading edge, or 5.5 + 12.625" =18.125" behind the firewall. If you wanted yours in the same spot, it would be20.125" back from your firewall. Personally, I think this is too far back. Ifyou are using 6x6's with hyd. brakes, putting the axle at your leading edge wouldmake it 14.625" aft of your firewall. the furthest back I would considerputting it is 17.625" behind your firewall. .For the second part of this, the fine calculation, I am going to need to retrievesome raw data from Ryan's archives. Starting with the weight on the scalesof plane #3, we can do an exact calculation to account for the shift in engineposition caused by having a 2" longer fuselage. The math on this will look likethis:1) Retrieve EWCG of plane #32) Remove 250 pounds of engine/prop/cowl from its CG location 24" ahead of thefirewall 250x(24" + the 12.625" for FW to LE)3) Replace the 250 pound motor installation 2" forward 250 x (24" + 14.625")4) Recalculate aircraft CG location with 225 pilot.5) Recalculate Min and Max allowable pilot weights..The fine tuned calculation should be within a half inch of the measured CG of theplane when it is done. You can hit a lot closer than this if we were dealingwith a comparison between two metal kit aircraft, but builder variations onPiet's don't allow that level of prediction. Still, even the rough first stageplan outlined above is vastly better than the pilots who had a rude awakeningwhen their planes hit the scales, and they found out that 30 minutes of readingand planning is a lot easier than weeks of moving the wing, or building newgear or both. .BTW, here is a good look at one of our powder coated, high thrust line mounts. It is on Mark Chouinard's plane. http://flycorvair.net/2013/10/17/pieten ... -airframe/ We make all of these mounts are 33" MML. The is the same mount that is also on Kevin Purtee's, Bob Dewenter's, Terry Hand's, Dave Aldrich's and Jim Boyer's builds.-ww.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Original Posted By: John Theron
This is all very interesting William. Thank youI have widened my Piet by two inches. If I wanted you to make me an engine mount,is this possible or have you got a fixed jig for a standard width fuselage?ScottyAustralia--------Tamworth, AustraliaBuilding a Corvair Powered Pietenpol Air Camperwww.scottyspietenpol.comFuslage now on its undercarriage! About to start wing spars...Corvair engine atRoy's Garage waiting to be modified.Read this topic online here:http://forums.matronics.com/viewtopic.p ... __________
This is all very interesting William. Thank youI have widened my Piet by two inches. If I wanted you to make me an engine mount,is this possible or have you got a fixed jig for a standard width fuselage?ScottyAustralia--------Tamworth, AustraliaBuilding a Corvair Powered Pietenpol Air Camperwww.scottyspietenpol.comFuslage now on its undercarriage! About to start wing spars...Corvair engine atRoy's Garage waiting to be modified.Read this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Pietenpol-List: Re: W & B, CG, and LG location question
Original Posted By: "William Wynne"
Subject: Pietenpol-List: New video of UK Pietenpol G_BUCOHave a look at the most well known and very widely traveled Pietenpol inthe UK, probably known to you all, G-BUCO.BUCO was built many years ago now by Alan James and he's still flying herand has flown over 1000 hours, a true tribute to Bernie.Alan flies BUCO all over the UK and even across the channel a few times(and under it once)!See: http://youtu.be/LrYhgZh1lTMEnglish JohnnyBuilding wings extremely slowly.________________________________________________________________________________Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Subject: Pietenpol-List: New video of UK Pietenpol G_BUCOHave a look at the most well known and very widely traveled Pietenpol inthe UK, probably known to you all, G-BUCO.BUCO was built many years ago now by Alan James and he's still flying herand has flown over 1000 hours, a true tribute to Bernie.Alan flies BUCO all over the UK and even across the channel a few times(and under it once)!See: http://youtu.be/LrYhgZh1lTMEnglish JohnnyBuilding wings extremely slowly.________________________________________________________________________________Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Pietenpol-List: Re: W & B, CG, and LG location question
Original Posted By: "bdewenter"
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________________________________________________________________________________Subject: Pietenpol-List: Re: W & B, CG, and LG location question
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________________________________________________________________________________Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Original Posted By: "Cuy, Michael D. (GRC-LME0)[Vantage Partners, LLC]"
Scotty,Our motor mount fixture is adjustable to compensate for builder variation in widthcaused by people putting the side skins of the fuselage before assembly orafterwards. The first makes the plane 24" wide, the latter 24.25", and we actuallymake different mounts for each of them to make sure every one of them fitslike a glove.A 26" fuselage is a different story, but we make many custom mounts every year,mostly for one-off planes. The major impediment to mounts going down under isthe abominable shipping cost. We can check this out in advance when you are ready,but it may make building it there a lot more attractive, and if so I wouldbe glad to supply the 'tray' or even precut tubing, or just share all the dimensions.-wwRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Scotty,Our motor mount fixture is adjustable to compensate for builder variation in widthcaused by people putting the side skins of the fuselage before assembly orafterwards. The first makes the plane 24" wide, the latter 24.25", and we actuallymake different mounts for each of them to make sure every one of them fitslike a glove.A 26" fuselage is a different story, but we make many custom mounts every year,mostly for one-off planes. The major impediment to mounts going down under isthe abominable shipping cost. We can check this out in advance when you are ready,but it may make building it there a lot more attractive, and if so I wouldbe glad to supply the 'tray' or even precut tubing, or just share all the dimensions.-wwRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Pietenpol-List: Re: New video of UK Pietenpol G_BUCO
Original Posted By: "bdewenter"
For those of you following the W&B discussion I am reminding the Piet buildersthat I wrote a little W&B app that makes it very easy and very intuitive to playW&B "what-if" scenarios including moving an item -such as an engine or a batteryto see how it changes CG.If you want a copy email me OFF list at rdewenter at woh.rr.comI still owe this to Jack T and one other gentleman this app - sorry Im late onthis guys its on its way.There is even a calculation for Max pilot weight - (used for worst case scenario- no fuel situation). The min pilot weight is a little flaky it does not workin all situations but max pilot does its intended job perfectly.After using it myself I could see how a properly built airplane is harder to getloaded out of CG - perhaps the Pietenpol is not as impervious to this as a C-172but its a great learning tool. It also demonstrates how a light plane isMORE easy to get out of CG than a HEAVY one.Food for thought--------Bob 'Early Builder' DewenterDayton OHRead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/wbto ... ___Subject: Pietenpol-List: Re: New video of UK Pietenpol G_BUCO
For those of you following the W&B discussion I am reminding the Piet buildersthat I wrote a little W&B app that makes it very easy and very intuitive to playW&B "what-if" scenarios including moving an item -such as an engine or a batteryto see how it changes CG.If you want a copy email me OFF list at rdewenter at woh.rr.comI still owe this to Jack T and one other gentleman this app - sorry Im late onthis guys its on its way.There is even a calculation for Max pilot weight - (used for worst case scenario- no fuel situation). The min pilot weight is a little flaky it does not workin all situations but max pilot does its intended job perfectly.After using it myself I could see how a properly built airplane is harder to getloaded out of CG - perhaps the Pietenpol is not as impervious to this as a C-172but its a great learning tool. It also demonstrates how a light plane isMORE easy to get out of CG than a HEAVY one.Food for thought--------Bob 'Early Builder' DewenterDayton OHRead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/wbto ... ___Subject: Pietenpol-List: Re: New video of UK Pietenpol G_BUCO
Pietenpol-List: Re: W & B, CG, and LG location question
Original Posted By: "bubbleboy"
Please Pietenpol friends be careful If you like me shop on Barnstormers. I hadan attempted scam happen when I was selling my 0300-D engine. The so calledbuyer held up my sell for two days until I finally figured what was happing. They were going to send me a check for too much money and have me send the balanceto another location. Barnstormers warns about just such a scam with exactlythe details I witnessed . I smelled a rat and gave them a good cussing,but I would like to get my hands around that scrawny neck and see if I could bulgetheir eyes a little.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Please Pietenpol friends be careful If you like me shop on Barnstormers. I hadan attempted scam happen when I was selling my 0300-D engine. The so calledbuyer held up my sell for two days until I finally figured what was happing. They were going to send me a check for too much money and have me send the balanceto another location. Barnstormers warns about just such a scam with exactlythe details I witnessed . I smelled a rat and gave them a good cussing,but I would like to get my hands around that scrawny neck and see if I could bulgetheir eyes a little.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Pietenpol-List: Re: W & B, CG, and LG location question
Original Posted By: "GrantZ"
that was not a scam... that was an attempt to find a idiot that would would partwith his money. the guy didnt ask for more than he needed...any time a smartguy beats a fool out of his money i call that working smart just good business.a scam is when someone beats a poor old, weak feeble minded etc. person outof his money.. i wouldnt call it a scam when the tv preacher passes the collectionplate and fools put their hard earned money in it..with that said wouldanyone on here like to send their pocket change and green backs to the JIM HYDEINTERNATIONAL CHEESEBURGER FOUNDATION..MAKE ALL CHECKS PAYABLE TO MS. LINDAHYDE TREASURER. for you muslims we are having a sale on virgins. Each virgincomes with a certificate of authenticity personally signed by Right Rev.Mo HAMID..Christianscan receive a nice photo signed by jesus and a splinter of woodfrom jims pietenpol project. For a contrabution of 10,000 jim come personallyto your shop and will personally bless your pietenpol project. Annoited engineoil is avaiable for a 150.00 donation per qt. For all of my jewish bros weoffer a nice leather leather bound book titled how to start your own shoe store.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: W & B, CG, and LG location question
that was not a scam... that was an attempt to find a idiot that would would partwith his money. the guy didnt ask for more than he needed...any time a smartguy beats a fool out of his money i call that working smart just good business.a scam is when someone beats a poor old, weak feeble minded etc. person outof his money.. i wouldnt call it a scam when the tv preacher passes the collectionplate and fools put their hard earned money in it..with that said wouldanyone on here like to send their pocket change and green backs to the JIM HYDEINTERNATIONAL CHEESEBURGER FOUNDATION..MAKE ALL CHECKS PAYABLE TO MS. LINDAHYDE TREASURER. for you muslims we are having a sale on virgins. Each virgincomes with a certificate of authenticity personally signed by Right Rev.Mo HAMID..Christianscan receive a nice photo signed by jesus and a splinter of woodfrom jims pietenpol project. For a contrabution of 10,000 jim come personallyto your shop and will personally bless your pietenpol project. Annoited engineoil is avaiable for a 150.00 donation per qt. For all of my jewish bros weoffer a nice leather leather bound book titled how to start your own shoe store.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Pietenpol-List: Re: W & B, CG, and LG location question
Original Posted By: "William Wynne"
I am sorry but I have to disagree with at least part of your thoughts.when a smart person beats an ignorant person out of there goods, I do not callthat smart business. This world has always had those shrewed people who liveoff other people's sweat. It will always be that way, nothing will change it,but I won't put a nice name to it.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: W & B, CG, and LG location question
I am sorry but I have to disagree with at least part of your thoughts.when a smart person beats an ignorant person out of there goods, I do not callthat smart business. This world has always had those shrewed people who liveoff other people's sweat. It will always be that way, nothing will change it,but I won't put a nice name to it.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Pietenpol-List: Re: W & B, CG, and LG location question
Original Posted By: "bubbleboy"
i know a lawyer here that got the same letter except it was for advanced legalpayments..450,000... the wolf is always waiting to eat sheepal.. i am a p t barnumfan...i wish that i could find a nice fat little sheepal to scam for an enginefor my heath parasol.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: W & B, CG, and LG location question
i know a lawyer here that got the same letter except it was for advanced legalpayments..450,000... the wolf is always waiting to eat sheepal.. i am a p t barnumfan...i wish that i could find a nice fat little sheepal to scam for an enginefor my heath parasol.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Pietenpol-List: Re: W & B, CG, and LG location question
Original Posted By: "Ken_P"
Some assumptions first:1) top line is the top of the upper capstrip2) bottom line (not the reference line) is the bottom of the lower capstrip3) the top line is measured from the bottom line (not the reference line)4) My measurements are correctThe drawing indicates that the trailing edge piece will be 1 1/4" wide startingat a point where the inside edges of the capstrips meet.My inside edges meet at a point where my trailing edge will have to be 1 3/4" wide(half inch longer) to get me to a 60" chord.Has anyone else come across this and if so, what did you do?In the photo, the last line to the right is 60 1/8" from the forward referenceline. Measurements add up to 1/8" too much (big deal, right?). The line just leftof it is 60". That hash mark area is where I expected the inside edges tomeet (based on plans).Thank you--------JohnRead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/piet ... ___Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Some assumptions first:1) top line is the top of the upper capstrip2) bottom line (not the reference line) is the bottom of the lower capstrip3) the top line is measured from the bottom line (not the reference line)4) My measurements are correctThe drawing indicates that the trailing edge piece will be 1 1/4" wide startingat a point where the inside edges of the capstrips meet.My inside edges meet at a point where my trailing edge will have to be 1 3/4" wide(half inch longer) to get me to a 60" chord.Has anyone else come across this and if so, what did you do?In the photo, the last line to the right is 60 1/8" from the forward referenceline. Measurements add up to 1/8" too much (big deal, right?). The line just leftof it is 60". That hash mark area is where I expected the inside edges tomeet (based on plans).Thank you--------JohnRead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/piet ... ___Subject: Pietenpol-List: Re: W & B, CG, and LG location question
Original Posted By: Ray Krause
William or Scotty,Sorry for the hijack as this isn't related to W&B but I have a friend who is tryingto get a prop shipped from the US (Nevada) to Australia (Perth). Can youshare the name of the shipping company Dan Weseman uses for Panther kits?ThanksRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
William or Scotty,Sorry for the hijack as this isn't related to W&B but I have a friend who is tryingto get a prop shipped from the US (Nevada) to Australia (Perth). Can youshare the name of the shipping company Dan Weseman uses for Panther kits?ThanksRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Re: Pietenpol-List: Re: NX992WD "Finished"
Original Posted By: Ray Krause
Mike,I received a lot of good advise from Oscar Zuniga's A&P friend concerning this problem. If I find the letter, will forward it to you. I was hoping you had the magical solution.I put woven mesh shielding over my ignition wires and grounded the shielding to the magneto. I used the old time, non-shielded plugs, this did not work. Then I ordered shielded wires from ACS to fit the A-65 and used shielded plugs, this did not work. Then I put condensers on the P leads (ACS noise suppressing condensers), this did not work. Then I shielded the P leads all the way from the ignition switch to the magnetos, this did not help. Right now I have the ACS ignition wires, shielded plugs, shielded P leads to the switch (grounded on the magneto end) and the condensers. No joy!Oscar's friend said that the Eismann AM-4's have a plastic (Bakelite?) distributor cap on the rear that is not shielded and this is where the noise is most likely coming from. He suggested making a "shield" out of metallic (copper) screen formed to the shape of the distributor cap, place it over the caps and ground it. I will try that someday, maybe this winter when things slow down. The A&P says the Eisemann mags are great and run forever, very reliable, but not shielded and thus noisy (they have an AD on them that should be done). Slick mags are shielded, expensive and are not as reliable (500 hr overhaul?). Of course, I may not live long enough to put 500 hrs on SkyScout!The ACS shielded wires come with the connectors for the shielded plugs on one end. The wires are silicone rubber covered and the inner core appears to be carbon within a clear tube. About 6" of this tube, without the silicone cover, sticks out the magneto end of the wire and has a clip to plug into the magneto. I don't understand how the shield is grounded, only on the spark plug end?This is a work in progress with no solution, yet. If you find the solution, please let me know. All of this experimenting has been done on my 1946 restored Aeronca 7AC. It has the exact setup that I have for SkyScout...whenever it flies!If you figure it out, let me know. I hate to buy 4 new Slick mags, wires and plugs just to be able to use a radio!Ray KrauseSent from my iPad> On Sep 12, 2014, at 3:56 AM, Michael Perez wrote:> > Ray, you are correct, 2 Eisemann AM-4s. I do intend to use a handheld radio. At this time, I do not a handheld picked out, nor do I have a headset chosen. (I am using a borrowed, David Clark, non-noise canceling deal for my current flight training.)> > How did you handle the shielding on the mag side? Did you just run the shields to ground? My plan is to operate as is, however, if the noise is an issue, I'll revisit my setup and come up with plan "B".> > Thanks for the heads up Ray.> > If God is your co-pilot, switch seats> Mike Perez> Karetaker Aero> Construction complete! (8/2014)> > > ============================================================================================================================================> ________________________________________________________________________________
Mike,I received a lot of good advise from Oscar Zuniga's A&P friend concerning this problem. If I find the letter, will forward it to you. I was hoping you had the magical solution.I put woven mesh shielding over my ignition wires and grounded the shielding to the magneto. I used the old time, non-shielded plugs, this did not work. Then I ordered shielded wires from ACS to fit the A-65 and used shielded plugs, this did not work. Then I put condensers on the P leads (ACS noise suppressing condensers), this did not work. Then I shielded the P leads all the way from the ignition switch to the magnetos, this did not help. Right now I have the ACS ignition wires, shielded plugs, shielded P leads to the switch (grounded on the magneto end) and the condensers. No joy!Oscar's friend said that the Eismann AM-4's have a plastic (Bakelite?) distributor cap on the rear that is not shielded and this is where the noise is most likely coming from. He suggested making a "shield" out of metallic (copper) screen formed to the shape of the distributor cap, place it over the caps and ground it. I will try that someday, maybe this winter when things slow down. The A&P says the Eisemann mags are great and run forever, very reliable, but not shielded and thus noisy (they have an AD on them that should be done). Slick mags are shielded, expensive and are not as reliable (500 hr overhaul?). Of course, I may not live long enough to put 500 hrs on SkyScout!The ACS shielded wires come with the connectors for the shielded plugs on one end. The wires are silicone rubber covered and the inner core appears to be carbon within a clear tube. About 6" of this tube, without the silicone cover, sticks out the magneto end of the wire and has a clip to plug into the magneto. I don't understand how the shield is grounded, only on the spark plug end?This is a work in progress with no solution, yet. If you find the solution, please let me know. All of this experimenting has been done on my 1946 restored Aeronca 7AC. It has the exact setup that I have for SkyScout...whenever it flies!If you figure it out, let me know. I hate to buy 4 new Slick mags, wires and plugs just to be able to use a radio!Ray KrauseSent from my iPad> On Sep 12, 2014, at 3:56 AM, Michael Perez wrote:> > Ray, you are correct, 2 Eisemann AM-4s. I do intend to use a handheld radio. At this time, I do not a handheld picked out, nor do I have a headset chosen. (I am using a borrowed, David Clark, non-noise canceling deal for my current flight training.)> > How did you handle the shielding on the mag side? Did you just run the shields to ground? My plan is to operate as is, however, if the noise is an issue, I'll revisit my setup and come up with plan "B".> > Thanks for the heads up Ray.> > If God is your co-pilot, switch seats> Mike Perez> Karetaker Aero> Construction complete! (8/2014)> > > ============================================================================================================================================> ________________________________________________________________________________
Re: Pietenpol-List: Re: NX992WD "Finished"
Original Posted By: Ray Krause
Could you describe your setup in more detail? You may have the silver bullet that we need! I do not have wind noise in the Aeronca, it is the clicking noise from the mags. It is even heard on a hand held radio 20' from the plane!Thanks,Ray KrauseSent from my iPad> On Sep 12, 2014, at 5:24 AM, Marcus Zechini wrote:> > I have 2 Eisemann AM-4s on my C-85-12. I use a handheld and finally got leather mic muff covers which were the biggest issue. Now intercom is usable.> ATC & formation friends seem to hear me OK, I hear them. I am not sure, but I assume the spark plug wires are shielded. I don't get spark plug noise.> > -Zeke> NX431LA> GN-1> >> On Fri, Sep 12, 2014 at 6:56 AM, Michael Perez wrote:>> Ray, you are correct, 2 Eisemann AM-4s. I do intend to use a handheld radio. At this time, I do not a handheld picked out, nor do I have a headset chosen. (I am using a borrowed, David Clark, non-noise canceling deal for my current flight training.)>> >> How did you handle the shielding on the mag side? Did you just run the shields to ground? My plan is to operate as is, however, if the noise is an issue, I'll revisit my setup and come up with plan "B".>> >> Thanks for the heads up Ray.>> >> If God is your co-pilot, switch seats>> Mike Perez>> Karetaker Aero>> Construction complete! (8/2014)>> >> >> >> " target="_blank">http://www.matronics.com/Navigator?Pietenpol-List>> tp://forums.matronics.com>> _blank">http://www.matronics.com/contribution>> > > > 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D> ________________________________________________________________________________
Could you describe your setup in more detail? You may have the silver bullet that we need! I do not have wind noise in the Aeronca, it is the clicking noise from the mags. It is even heard on a hand held radio 20' from the plane!Thanks,Ray KrauseSent from my iPad> On Sep 12, 2014, at 5:24 AM, Marcus Zechini wrote:> > I have 2 Eisemann AM-4s on my C-85-12. I use a handheld and finally got leather mic muff covers which were the biggest issue. Now intercom is usable.> ATC & formation friends seem to hear me OK, I hear them. I am not sure, but I assume the spark plug wires are shielded. I don't get spark plug noise.> > -Zeke> NX431LA> GN-1> >> On Fri, Sep 12, 2014 at 6:56 AM, Michael Perez wrote:>> Ray, you are correct, 2 Eisemann AM-4s. I do intend to use a handheld radio. At this time, I do not a handheld picked out, nor do I have a headset chosen. (I am using a borrowed, David Clark, non-noise canceling deal for my current flight training.)>> >> How did you handle the shielding on the mag side? Did you just run the shields to ground? My plan is to operate as is, however, if the noise is an issue, I'll revisit my setup and come up with plan "B".>> >> Thanks for the heads up Ray.>> >> If God is your co-pilot, switch seats>> Mike Perez>> Karetaker Aero>> Construction complete! (8/2014)>> >> >> >> " target="_blank">http://www.matronics.com/Navigator?Pietenpol-List>> tp://forums.matronics.com>> _blank">http://www.matronics.com/contribution>> > > > 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D> ________________________________________________________________________________
Re: Pietenpol-List: Santiago Morete's panel
Original Posted By: Amsafetyc
Mike,Here is some of the info from Oscars friend, Jeff...More from Jeff... and by the way, I seem to remember that my airplane has either 12 or 12-1/2 degrees of angle when sitting on the ground, and I don't have any problems with it. Don't go changing anything drastic with your landing gear geometry just yet.-Oscar HI Oscar,Yep. If I remember correctly (it is possible that I may not), the distributor cap on the AM series Eisemans are Bakelite, so offer no RF shielding what-so-ever. I suppose one could fashion a Faraday Cage over them, but I really don't have any feel at all for the density of the wire mesh to get any effectiveness from them. [couldn't get the diagrams to attach, but you'll get the idea]Below is a side-by-side cutaway of the LA-4 model on the left and the AM-4 model on the right. Note that the coil lead (#12 on the right picture) is cast into the cap with no shielding. That is likely the source of most of the noise, although the spark jumping from the distributor gear is also going to generate a lot of noise as well. I would also hate to give up the Eisemann mags. They work reliably and are easy to repair. Effectively, they are a forever magneto. Not so much on the Slicks. With Slicks you do a 500 hour inspection, then throw them away at 1000 hours or when they fail, whichever comes first.Since Ray apparently doesn't mind experimenting a bit, you might suggest he try using wire mesh to construct a grounded cage over each of the magnetos. It might work. Or it might not. But an afternoon with the snips and a little bit of screen wire is a darned sight less expensive than a new set of mags. Any conductive wire mesh should do. The finer the mesh, the better. I would try window screening.Best regards,-JeffSent from my iPad> On Sep 12, 2014, at 3:56 AM, Michael Perez wrote:> > Ray, you are correct, 2 Eisemann AM-4s. I do intend to use a handheld radio. At this time, I do not a handheld picked out, nor do I have a headset chosen. (I am using a borrowed, David Clark, non-noise canceling deal for my current flight training.)> > How did you handle the shielding on the mag side? Did you just run the shields to ground? My plan is to operate as is, however, if the noise is an issue, I'll revisit my setup and come up with plan "B".> > Thanks for the heads up Ray.> > If God is your co-pilot, switch seats> Mike Perez> Karetaker Aero> Construction complete! (8/2014)> > > ============================================================================================================================================> ________________________________________________________________________________Subject: Re: Pietenpol-List: Santiago Morete's panel
Mike,Here is some of the info from Oscars friend, Jeff...More from Jeff... and by the way, I seem to remember that my airplane has either 12 or 12-1/2 degrees of angle when sitting on the ground, and I don't have any problems with it. Don't go changing anything drastic with your landing gear geometry just yet.-Oscar HI Oscar,Yep. If I remember correctly (it is possible that I may not), the distributor cap on the AM series Eisemans are Bakelite, so offer no RF shielding what-so-ever. I suppose one could fashion a Faraday Cage over them, but I really don't have any feel at all for the density of the wire mesh to get any effectiveness from them. [couldn't get the diagrams to attach, but you'll get the idea]Below is a side-by-side cutaway of the LA-4 model on the left and the AM-4 model on the right. Note that the coil lead (#12 on the right picture) is cast into the cap with no shielding. That is likely the source of most of the noise, although the spark jumping from the distributor gear is also going to generate a lot of noise as well. I would also hate to give up the Eisemann mags. They work reliably and are easy to repair. Effectively, they are a forever magneto. Not so much on the Slicks. With Slicks you do a 500 hour inspection, then throw them away at 1000 hours or when they fail, whichever comes first.Since Ray apparently doesn't mind experimenting a bit, you might suggest he try using wire mesh to construct a grounded cage over each of the magnetos. It might work. Or it might not. But an afternoon with the snips and a little bit of screen wire is a darned sight less expensive than a new set of mags. Any conductive wire mesh should do. The finer the mesh, the better. I would try window screening.Best regards,-JeffSent from my iPad> On Sep 12, 2014, at 3:56 AM, Michael Perez wrote:> > Ray, you are correct, 2 Eisemann AM-4s. I do intend to use a handheld radio. At this time, I do not a handheld picked out, nor do I have a headset chosen. (I am using a borrowed, David Clark, non-noise canceling deal for my current flight training.)> > How did you handle the shielding on the mag side? Did you just run the shields to ground? My plan is to operate as is, however, if the noise is an issue, I'll revisit my setup and come up with plan "B".> > Thanks for the heads up Ray.> > If God is your co-pilot, switch seats> Mike Perez> Karetaker Aero> Construction complete! (8/2014)> > > ============================================================================================================================================> ________________________________________________________________________________Subject: Re: Pietenpol-List: Santiago Morete's panel