Original Posted By: "DJ Vegh"
Guys -How have most of you affixed your inter-cylinder cooling baffles? The little onesthat go between the cylinders from the bottom. I have got mine all cut andfitted in place - many bends!, but need to make sure that they will not fallout.Thanks -Craig Having fun, enjoying life! Craig Wilcox craigwilcox(at)peoplepc.com Powered by Plaxo Want a signature like this? ________________________________________________________________________________
Pietenpol-List: Baffling Baffles
Re: Pietenpol-List: Baffling Baffles
Original Posted By: "Craig Wilcox"
Craig,My mentor said that I didn't need them.walt evansNX140DL----- Original Message -----
Craig,My mentor said that I didn't need them.walt evansNX140DL----- Original Message -----
Re: Pietenpol-List: Baffling Baffles
Original Posted By: "w b evans"
Walt,Put them on.Chris BobkaATP, CFI, A&P, IA, FE, AGI----- Original Message -----
Walt,Put them on.Chris BobkaATP, CFI, A&P, IA, FE, AGI----- Original Message -----
Pietenpol-List: Baffling Baffles
Original Posted By: "Christian Bobka"
Craig,Take a look at your handy copy of Bingelis Firewall Forward page 127 and 131for patterns to make all the baffles for the small continentals. The oilcooling baffle shown on page 131 is highly recommended and it really works.The premise is to positively route cooling air along the lower side of thecase where the oil is in the process of draining back to the sump. It iswhere the oil is hottest and is thus able to lose the most heat in theshortest time frame. This oil shroud also keeps you from having a highpressure air leak under the cylinders right where you want to have the airpressure lowest.High air pressure on top of the cylinders gets forced THROUGH the fins bythe small baffles that are put on from underneath the cylinders. WaltEvans' airflow does not get forced THROUGH the fins but can convenientlypass through the big opening near the cylinder fins so he loses out oncooling that his mentor THINKS he has plenty of.For an engine the size of the small continentals, you can get by with nobaffling as long as you make about 45 hp or less.The two nicest setups for the intercylinder baffles is either theTaylorcraft or the Cessna 140 with the Taylorcraft the better one. See ifyou can find someone with a Taylorcraft with a Continental that can show youthe set up.Can you send pictures of what you have already?Chris Bobka----- Original Message -----
Craig,Take a look at your handy copy of Bingelis Firewall Forward page 127 and 131for patterns to make all the baffles for the small continentals. The oilcooling baffle shown on page 131 is highly recommended and it really works.The premise is to positively route cooling air along the lower side of thecase where the oil is in the process of draining back to the sump. It iswhere the oil is hottest and is thus able to lose the most heat in theshortest time frame. This oil shroud also keeps you from having a highpressure air leak under the cylinders right where you want to have the airpressure lowest.High air pressure on top of the cylinders gets forced THROUGH the fins bythe small baffles that are put on from underneath the cylinders. WaltEvans' airflow does not get forced THROUGH the fins but can convenientlypass through the big opening near the cylinder fins so he loses out oncooling that his mentor THINKS he has plenty of.For an engine the size of the small continentals, you can get by with nobaffling as long as you make about 45 hp or less.The two nicest setups for the intercylinder baffles is either theTaylorcraft or the Cessna 140 with the Taylorcraft the better one. See ifyou can find someone with a Taylorcraft with a Continental that can show youthe set up.Can you send pictures of what you have already?Chris Bobka----- Original Message -----
Re: Pietenpol-List: Apple QuickTime Viewing Problems
Original Posted By: "w b evans"
Subject: Re: Pietenpol-List: Apple QuickTime Viewing ProblemsBob,As they used to say on the Amos 'n Andy radio show in the thirties, " boy, did you say a mouthful".Started a Smith Miniplane in '58. Wife raised hell. Had a welder over on Sat and she ran his ass off. That's what you call LOVE. Gave up to raise the kids.Kids are now adults and I begin a Volksplane II. Wife raises more hell. Got rid of the VP project.Got rid of the wife. Got a new one. Built a Piet, wife is happy, I finish it a few month's prior to birthday #80. Moral of the story; Get the right wife to begin with if you want to build airplanes.Corky in La living the good life________________________________________________________________________________
Subject: Re: Pietenpol-List: Apple QuickTime Viewing ProblemsBob,As they used to say on the Amos 'n Andy radio show in the thirties, " boy, did you say a mouthful".Started a Smith Miniplane in '58. Wife raised hell. Had a welder over on Sat and she ran his ass off. That's what you call LOVE. Gave up to raise the kids.Kids are now adults and I begin a Volksplane II. Wife raises more hell. Got rid of the VP project.Got rid of the wife. Got a new one. Built a Piet, wife is happy, I finish it a few month's prior to birthday #80. Moral of the story; Get the right wife to begin with if you want to build airplanes.Corky in La living the good life________________________________________________________________________________
Re: Pietenpol-List: Baffling Baffles
Original Posted By: "w b evans"
Craig,If I remember correctly, his reasoning was that they were necessary in anenclosed engine config. where, as the air travels from high pressure areato low past the fins, you can have a "dead" area under the cyls. That iswhy you put that "mustasched" shaped baffle under the cyl. bases to shootair fore and aft to clear the dead zone.With mine , the cyls are exposed with eyebrows, and there would be no deadspots, cause the eyebrows push down and then the free air comming by coolsthe undersides.walt evansNX140DL----- Original Message -----
Craig,If I remember correctly, his reasoning was that they were necessary in anenclosed engine config. where, as the air travels from high pressure areato low past the fins, you can have a "dead" area under the cyls. That iswhy you put that "mustasched" shaped baffle under the cyl. bases to shootair fore and aft to clear the dead zone.With mine , the cyls are exposed with eyebrows, and there would be no deadspots, cause the eyebrows push down and then the free air comming by coolsthe undersides.walt evansNX140DL----- Original Message -----
> Pietenpol-List: Baffling Baffles
Original Posted By: Michael D Cuy
Re: Pietenpol-List: Apple QuickTime Viewing Problems
Original Posted By: del magsam
RE: Pietenpol-List: Apple QuickTime Viewing Problems
Original Posted By: owner-pietenpol-list-server(at)matronics.com
Corky, you sound like me - an AIDS survivor (Aviation Induced DivorceSyndrome). First wife loved to fly, until she got that ring on her finger.Three years after the wedding, she told me that either my J-3 had to go, orshe was leaving. Made the wrong choice and sold the airplane (should havedivorced her on the spot and saved myself 12 more years of misery). Finallydivorced her, started building the Piet, met and married wife number two(who loved flying until she got that ring on her finger). Stayed marriedfor 5 years until she got tired of me spending most of my time building theairplane and she ran off with an ear-ringed, tattooed, pony-tailed 28 yearold and moved to Seattle with him. Now I'm looking for one who is already apilot, preferably with her own airplane.Jack PhillipsPutting the last touches on the fabric work on NX899JP today. -----Original Message-----
Corky, you sound like me - an AIDS survivor (Aviation Induced DivorceSyndrome). First wife loved to fly, until she got that ring on her finger.Three years after the wedding, she told me that either my J-3 had to go, orshe was leaving. Made the wrong choice and sold the airplane (should havedivorced her on the spot and saved myself 12 more years of misery). Finallydivorced her, started building the Piet, met and married wife number two(who loved flying until she got that ring on her finger). Stayed marriedfor 5 years until she got tired of me spending most of my time building theairplane and she ran off with an ear-ringed, tattooed, pony-tailed 28 yearold and moved to Seattle with him. Now I'm looking for one who is already apilot, preferably with her own airplane.Jack PhillipsPutting the last touches on the fabric work on NX899JP today. -----Original Message-----
Re: Pietenpol-List: Baffling Baffles
Original Posted By: "w b evans"
W.B, others -Thanks for your input on the baffling question. The airplane is NOT a Piet,but a Bakeng Duce, with Lyc O-290-D, fully enclosed cowl.I am going to use Chris' idea of using a rectangular aluminum plate directlyabove the intercylinder baffle, safety wired to the baffle. This shouldform a sandwich which will force air through the fins instead of the deadspace between the cylinders.The other baffles were a pain to cut and bend - several times I got them cutperfectly, only to bend them the wrong way on the brake. Got to learn toput the bend line on the inside of the bend, instead of all on one side!Lots of rejects, which I have turned into smaller pieces for other places.Appreciate all the help!Craig----- Original Message -----
W.B, others -Thanks for your input on the baffling question. The airplane is NOT a Piet,but a Bakeng Duce, with Lyc O-290-D, fully enclosed cowl.I am going to use Chris' idea of using a rectangular aluminum plate directlyabove the intercylinder baffle, safety wired to the baffle. This shouldform a sandwich which will force air through the fins instead of the deadspace between the cylinders.The other baffles were a pain to cut and bend - several times I got them cutperfectly, only to bend them the wrong way on the brake. Got to learn toput the bend line on the inside of the bend, instead of all on one side!Lots of rejects, which I have turned into smaller pieces for other places.Appreciate all the help!Craig----- Original Message -----
Re: Pietenpol-List: iet list observations
Original Posted By: "DJ Vegh"
Way to go DJ. This list is for people who are building.... I for one likeseeing pictiures and videos of other peoples projects, keeps me stoked onmy project. I boated for many years and listened to the same stuff fromthe sail and power boys, " you stink potters" " You stick boaters". Whocares, you should take a step back and listen to yourself. We "GN1"builders find a lot in common with the Piet builders on this list. I forone have got many usefull tips on this list from people like DJ and MikeCuy. It's time to get off your soap box and realize that everyone on thislist has 2 things in common. 1). We all love to fly and 2). We all love tobuild. It really makes no difference if it's a GN1 or A Piet, this is acommunity of builders, not airplane racists.KenGN1 2992Canada----- Original Message -----
Way to go DJ. This list is for people who are building.... I for one likeseeing pictiures and videos of other peoples projects, keeps me stoked onmy project. I boated for many years and listened to the same stuff fromthe sail and power boys, " you stink potters" " You stick boaters". Whocares, you should take a step back and listen to yourself. We "GN1"builders find a lot in common with the Piet builders on this list. I forone have got many usefull tips on this list from people like DJ and MikeCuy. It's time to get off your soap box and realize that everyone on thislist has 2 things in common. 1). We all love to fly and 2). We all love tobuild. It really makes no difference if it's a GN1 or A Piet, this is acommunity of builders, not airplane racists.KenGN1 2992Canada----- Original Message -----
Re: Pietenpol-List: iet list observations
Original Posted By: Gary Gower