Original Posted By: "Jeff Boatright"
Hi People!Talking about the Red Piet which has the Funk engine and the louvred radiator inside the cowl on the side of the engine, Lowell told me he thoiught it was for sale. Last summer I talked to the husband of the owner and he said it was. Lowell and I met with the owner at her hangar in Sullivan, Wi.The plane had not been touched in two yrs.Lowell spent about 2 hrs. and about 150 prop flips to finally get it running. Jo Beth Barrett, who incidently also own a Stearman and a military Taylorcraft, then taxied it around on the runway. It geve her a renewed interest in the plane and she decided not to sell it.This turned out to be a good thing for me because I ended up buying a really well crafted Piet from Ray Hill, Baxter, IA. You'll see it next summer at Brodhead.About the airfoil!Lowell Frank currently has a Pietenpol with a radial engine. He did not build this plane but he did build a new wing with the better performing airfoil. The airfoil was designed by Harry Riblett who also did airfoil designs for NASA and Burt Rutan. It is called a GA-30U-612.It has a deeper chord, rounder leading edge and almost no undercamber. It far outperforms the Pietenpol airfoil.Riblett did an analysis of the Piet airfoil and gave it a poor rating. Riblett said, even better than the GA-30U-612 is an airfoil with even a thicker chord called the GA-30U-613.5.The 12 defines the 12% thickness and the 13.5 defines the 13.5% chord thickness.Lowell chose to build the 612 because when looking at his Piet from the front one doesn't notice the difference in airfoil thickness from the Piet airfoil but he was afraid that buildingt the 13.5 airfoil, it would show.At any rate the 612 airfoil demonstrates much better climb, higher speed, greater lift, slower and more gentle stall characteristics. I saw his plane climb out at Brodhead in half the distance and double the altitude than any of the other Piets and the engine, 90hp wasn't even running at full throttle.These airfoils caught the interest of both Bill Rewey and myself. We evaluated them, Bill had conversations with Harry Riblett and we plotted them out.The next issue of the Brodhead Newsletter will have an article by Bill Rewey about these airfoils.I have plotted out both airfoils full size and either one is available to anyone who's interested for $10 including shipping. I definitely will build one of the two for my Piet. I understand that the 613.5 airfoil has not been tried on a Piet yet. I have a full set of the Piet ribs all built and they'll be available for sale at Brodhead next summer. Fortunately I hadn't started assembling the wing yet.Roman Bukolt NX20795 and (NX88XN reserved)----- Original Message -----
Pietenpol-List: Re: Funk piet and Riblett airfoil
Pietenpol-List: Re: Funk piet and Riblett airfoil
Original Posted By: "Don Emch"
>>>Hi People!>Talking about the Red Piet which has the Funk engine and the louvred >radiator inside the cowl on the side of the engine, Lowell told me he>>thoiught it was for sale. Last summer I talked to the husband of the>owner >and he said it was. Lowell and I met with the owner at her hangar in>>Sullivan, Wi.>The plane had not been touched in two yrs.>Lowell spent about 2 hrs. and about 150 prop flips to finally get it >running. Jo Beth Barrett, who incidently also own a Stearman and a >military Taylorcraft, then taxied it around on the runway. It geve>her a >renewed interest in the plane and she decided not to sell it.>This turned out to be a good thing for me because I ended up buying a>really >well crafted Piet from Ray Hill, Baxter, IA. You'll see it next>summer at >Brodhead.>About the airfoil!>Lowell Frank currently has a Pietenpol with a radial engine. He did>not >build this plane but he did build a new wing with the better>performing >airfoil. The airfoil was designed by Harry Riblett who also did>airfoil >designs for NASA and Burt Rutan. It is called a GA-30U-612.>It has a deeper chord, rounder leading edge and almost no>undercamber. It >far outperforms the Pietenpol airfoil.>Riblett did an analysis of the Piet airfoil and gave it a poor>rating. >Riblett said, even better than the GA-30U-612 is an airfoil with even>a >thicker chord called the GA-30U-613.5.>The 12 defines the 12% thickness and the 13.5 defines the 13.5% chord>>thickness.>Lowell chose to build the 612 because when looking at his Piet from>the >front one doesn't notice the difference in airfoil thickness from the>Piet >airfoil but he was afraid that buildingt the 13.5 airfoil, it would>show.>At any rate the 612 airfoil demonstrates much better climb, higher>speed, >greater lift, slower and more gentle stall characteristics. I saw>his plane >climb out at Brodhead in half the distance and double the altitude>than any >of the other Piets and the engine, 90hp wasn't even running at full >throttle.>These airfoils caught the interest of both Bill Rewey and myself. We>>evaluated them, Bill had conversations with Harry Riblett and we>plotted >them out.>The next issue of the Brodhead Newsletter will have an article by>Bill Rewey >about these airfoils.>I have plotted out both airfoils full size and either one is>available to >anyone who's interested for $10 including shipping. I definitely>will build >one of the two for my Piet. I understand that the 613.5 airfoil has>not >been tried on a Piet yet. I have a full set of the Piet ribs all>built and >they'll be available for sale at Brodhead next summer. Fortunately I>hadn't >started assembling the wing yet.>>Roman Bukolt NX20795 and (NX88XN reserved)>>>----- Original Message ----- >From: "Jeff Boatright" >To: >Sent: Monday, December 18, 2006 6:55 AM>Subject: RE: Pietenpol-List: radiators low?>>>>>>> Lowell was talking about a new airfoil that he's been testing on>his Piet. >> I'd like to hear more about that, too. Maybe Doc Mosher will get>him to >> write more articles for the newsletter.>>>>>>>>>>>Jeff,>>>I did talk to Lowell Frank about the plane last year at Brodhead.>He said>>>the performance is better than the normal Ford Piet. I don't think>it has>>>any cooling issues.>>>If someone on the list knows how to contact Loewll, I'm sure he>would be>>>real happy to talk to you about it. He is very knowledgeable about>>>airplanes and engines, he was the antique airplane technical expert>for >>>the>>>movie Red Betsy, and loves to talk about airplanes.>>>Skip>>>>>>>>>>>>>> Do you know anything about how it cooled and>>>> performed otherwise?>>>>>> > Jeff>>>>>>> -- >>>> _____________________________________________________________>> Jeffrey H. Boatright, PhD>> Associate Professor, Emory Eye Center, Atlanta, GA, USA>> Senior Editor, Molecular Vision, http://www.molvis.org/molvis>> mailto:jboatri(at)emory.edu>>>>>>>>>>>> >>________________________________________________________________________________Subject: Pietenpol-List: Re: Funk piet and Riblett airfoil
>>>Hi People!>Talking about the Red Piet which has the Funk engine and the louvred >radiator inside the cowl on the side of the engine, Lowell told me he>>thoiught it was for sale. Last summer I talked to the husband of the>owner >and he said it was. Lowell and I met with the owner at her hangar in>>Sullivan, Wi.>The plane had not been touched in two yrs.>Lowell spent about 2 hrs. and about 150 prop flips to finally get it >running. Jo Beth Barrett, who incidently also own a Stearman and a >military Taylorcraft, then taxied it around on the runway. It geve>her a >renewed interest in the plane and she decided not to sell it.>This turned out to be a good thing for me because I ended up buying a>really >well crafted Piet from Ray Hill, Baxter, IA. You'll see it next>summer at >Brodhead.>About the airfoil!>Lowell Frank currently has a Pietenpol with a radial engine. He did>not >build this plane but he did build a new wing with the better>performing >airfoil. The airfoil was designed by Harry Riblett who also did>airfoil >designs for NASA and Burt Rutan. It is called a GA-30U-612.>It has a deeper chord, rounder leading edge and almost no>undercamber. It >far outperforms the Pietenpol airfoil.>Riblett did an analysis of the Piet airfoil and gave it a poor>rating. >Riblett said, even better than the GA-30U-612 is an airfoil with even>a >thicker chord called the GA-30U-613.5.>The 12 defines the 12% thickness and the 13.5 defines the 13.5% chord>>thickness.>Lowell chose to build the 612 because when looking at his Piet from>the >front one doesn't notice the difference in airfoil thickness from the>Piet >airfoil but he was afraid that buildingt the 13.5 airfoil, it would>show.>At any rate the 612 airfoil demonstrates much better climb, higher>speed, >greater lift, slower and more gentle stall characteristics. I saw>his plane >climb out at Brodhead in half the distance and double the altitude>than any >of the other Piets and the engine, 90hp wasn't even running at full >throttle.>These airfoils caught the interest of both Bill Rewey and myself. We>>evaluated them, Bill had conversations with Harry Riblett and we>plotted >them out.>The next issue of the Brodhead Newsletter will have an article by>Bill Rewey >about these airfoils.>I have plotted out both airfoils full size and either one is>available to >anyone who's interested for $10 including shipping. I definitely>will build >one of the two for my Piet. I understand that the 613.5 airfoil has>not >been tried on a Piet yet. I have a full set of the Piet ribs all>built and >they'll be available for sale at Brodhead next summer. Fortunately I>hadn't >started assembling the wing yet.>>Roman Bukolt NX20795 and (NX88XN reserved)>>>----- Original Message ----- >From: "Jeff Boatright" >To: >Sent: Monday, December 18, 2006 6:55 AM>Subject: RE: Pietenpol-List: radiators low?>>>>>>> Lowell was talking about a new airfoil that he's been testing on>his Piet. >> I'd like to hear more about that, too. Maybe Doc Mosher will get>him to >> write more articles for the newsletter.>>>>>>>>>>>Jeff,>>>I did talk to Lowell Frank about the plane last year at Brodhead.>He said>>>the performance is better than the normal Ford Piet. I don't think>it has>>>any cooling issues.>>>If someone on the list knows how to contact Loewll, I'm sure he>would be>>>real happy to talk to you about it. He is very knowledgeable about>>>airplanes and engines, he was the antique airplane technical expert>for >>>the>>>movie Red Betsy, and loves to talk about airplanes.>>>Skip>>>>>>>>>>>>>> Do you know anything about how it cooled and>>>> performed otherwise?>>>>>> > Jeff>>>>>>> -- >>>> _____________________________________________________________>> Jeffrey H. Boatright, PhD>> Associate Professor, Emory Eye Center, Atlanta, GA, USA>> Senior Editor, Molecular Vision, http://www.molvis.org/molvis>> mailto:jboatri(at)emory.edu>>>>>>>>>>>> >>________________________________________________________________________________Subject: Pietenpol-List: Re: Funk piet and Riblett airfoil
Re: Pietenpol-List: Re: Funk piet and Riblett airfoil
Original Posted By: "Alan Lyscars"
Subject: Re: Pietenpol-List: Re: Funk piet and Riblett airfoilRoman,I am quite interested in the two full sized airfoils as mentioned. Please give me a mailing address so I may send you my last $10.00.Corky625 Pierremont RdShreveport, La 71106________________________________________________________________________________
Subject: Re: Pietenpol-List: Re: Funk piet and Riblett airfoilRoman,I am quite interested in the two full sized airfoils as mentioned. Please give me a mailing address so I may send you my last $10.00.Corky625 Pierremont RdShreveport, La 71106________________________________________________________________________________
Re: Pietenpol-List: Re: Funk piet and Riblett airfoil
Original Posted By: "Rick Holland"
Roman,Where do I send my ten bucks for a plot?Al LyscarsPortland, Maine It is called a GA-30U-612.> It has a deeper chord, rounder leading edge and almost no undercamber. It> far outperforms the Pietenpol airfoil.________________________________________________________________________________Date: Mon, 18 Dec 2006 11:08:45 -0700
Roman,Where do I send my ten bucks for a plot?Al LyscarsPortland, Maine It is called a GA-30U-612.> It has a deeper chord, rounder leading edge and almost no undercamber. It> far outperforms the Pietenpol airfoil.________________________________________________________________________________Date: Mon, 18 Dec 2006 11:08:45 -0700
Re: Pietenpol-List: Re: Funk piet and Riblett airfoil
Original Posted By: amsafetyc(at)aol.com
Re: Pietenpol-List: Re: Funk piet and Riblett airfoil
Original Posted By: "Rick Holland"
Subject: Re: Pietenpol-List: Re: Funk piet and Riblett airfoilShame, Shame on anybody even THINKING about using this morphodite, parasitic, foreign airfoil. Bernie is rolling over in his grave!Where do I send my ten bucks? Dan HelsperPoplar Grove, IL.________________________________________________________________________________Date: Mon, 18 Dec 2006 13:45:32 -0700
Subject: Re: Pietenpol-List: Re: Funk piet and Riblett airfoilShame, Shame on anybody even THINKING about using this morphodite, parasitic, foreign airfoil. Bernie is rolling over in his grave!Where do I send my ten bucks? Dan HelsperPoplar Grove, IL.________________________________________________________________________________Date: Mon, 18 Dec 2006 13:45:32 -0700
Re: Pietenpol-List: Re: Funk piet and Riblett airfoil
Original Posted By: Kip and Beth Gardner
Pietenpol-List: Re: Funk piet and Riblett airfoil
Original Posted By: johnwoods(at)westnet.com.au
I'm sure there are better airfoils out there but heck, that's part of the Pietenpollegend! When people ask about the wing you won't be able to tell them allabout Mr. Pietenpol's highly technical research. Kidding aside the old oneain't too bad either. On 65hp. I just flew my 230lb. dad and 185lb. me aroundthe other day at 78-80mph, out climbed the cub I used to fly, and landed at around32mph or so. Not too bad for his trial and error engineering. I guessI lean toward the purists though! :-)Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
I'm sure there are better airfoils out there but heck, that's part of the Pietenpollegend! When people ask about the wing you won't be able to tell them allabout Mr. Pietenpol's highly technical research. Kidding aside the old oneain't too bad either. On 65hp. I just flew my 230lb. dad and 185lb. me aroundthe other day at 78-80mph, out climbed the cub I used to fly, and landed at around32mph or so. Not too bad for his trial and error engineering. I guessI lean toward the purists though! :-)Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
RE: Pietenpol-List: Re: Funk piet and Riblett airfoil
Original Posted By: conceptmodels(at)tds.net
Hi Roman,I am just starting my Piet in Australia and am about to lay up thewing ribs.I would be interested in these Riblett airfoils.Would you be able to post the co-ordinates for these airfoils?Regards,JohnW---- Original Message ----
Hi Roman,I am just starting my Piet in Australia and am about to lay up thewing ribs.I would be interested in these Riblett airfoils.Would you be able to post the co-ordinates for these airfoils?Regards,JohnW---- Original Message ----
Original Posted By: "Roman Bukolt"
One thing to keep in mind, then I'll stop preaching, with other airfoils on thePiet, is the rear most C.G. for that particular airfoil. Especially since Pietstend to be tail heavy. Mr. Pietenpol's airfoil is fairly forgiving of rearC.G.. Just be sure to know the limits.Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
One thing to keep in mind, then I'll stop preaching, with other airfoils on thePiet, is the rear most C.G. for that particular airfoil. Especially since Pietstend to be tail heavy. Mr. Pietenpol's airfoil is fairly forgiving of rearC.G.. Just be sure to know the limits.Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Re: Pietenpol-List: Re: Funk piet and Riblett airfoil
Original Posted By: Rick Holland
RomanBukolt6505 Urich TerraceMadison, Wi 54719 ----- Original Message -----
RomanBukolt6505 Urich TerraceMadison, Wi 54719 ----- Original Message -----
Re: Pietenpol-List: Re: Funk piet and Riblett airfoil
Original Posted By: "Ed G."
Roman Bukolt6505 Urich TerraceMadison, Wi. 53719----- Original Message -----
Roman Bukolt6505 Urich TerraceMadison, Wi. 53719----- Original Message -----
Re: Pietenpol-List: Re: Funk piet and Riblett airfoil
Original Posted By: amsafetyc(at)aol.com
Roman Bukolt6505 Urich TerraceMadison, Wi. 53719 ----- Original Message -----
Roman Bukolt6505 Urich TerraceMadison, Wi. 53719 ----- Original Message -----
Re: Pietenpol-List: Re: Funk piet and Riblett airfoil
Original Posted By: "Alan Lyscars"
Roman Bukolt6505 Urich TerraceMadison, Wi. 53719----- Original Message -----
Roman Bukolt6505 Urich TerraceMadison, Wi. 53719----- Original Message -----
Re: Pietenpol-List: Re: Funk piet and Riblett airfoil
Original Posted By: Tim Willis
Re: Pietenpol-List: Re: Funk piet and Riblett airfoil
Original Posted By: PIETLARS29(at)wmconnect.com
Subject: Re: Pietenpol-List: Re: Funk piet and Riblett airfoilIn a message dated 12/18/2006 12:38:59 PM Central Standard Time, flyboy_120(at)hotmail.com writes:I saw Mr. Lowell's piet climb out at Brodhead too, but thought it's great performance was just because of the large diameter prop that he had on the big radial engine. ......Ed G.You would be correct, Ed.________________________________________________________________________________
Subject: Re: Pietenpol-List: Re: Funk piet and Riblett airfoilIn a message dated 12/18/2006 12:38:59 PM Central Standard Time, flyboy_120(at)hotmail.com writes:I saw Mr. Lowell's piet climb out at Brodhead too, but thought it's great performance was just because of the large diameter prop that he had on the big radial engine. ......Ed G.You would be correct, Ed.________________________________________________________________________________
RE: Pietenpol-List: Jury Strut - flying wing strut attach method
Original Posted By: Hans Vander Voort
Subject: Re: Pietenpol-List: Jury Strut - flying wing strut attach methodHi,I used the Skytek large struts and found it was simple enough to run a # 10 bolt through the strut to hold a stainlrss steel angle to which I bolted the jury strut. I used a very short piece of the 1" aluminum bar stock which matches the internal 'flats' of the the large strut to back the hole site, I drilled a hole through the block and it makes for a solid mount for the strut connection. Looks OK too .Lou Larsen (its 78 here in the middle of Florida)________________________________________________________________________________Subject: RE: Pietenpol-List: Jury Strut - flying wing strut attach method
Subject: Re: Pietenpol-List: Jury Strut - flying wing strut attach methodHi,I used the Skytek large struts and found it was simple enough to run a # 10 bolt through the strut to hold a stainlrss steel angle to which I bolted the jury strut. I used a very short piece of the 1" aluminum bar stock which matches the internal 'flats' of the the large strut to back the hole site, I drilled a hole through the block and it makes for a solid mount for the strut connection. Looks OK too .Lou Larsen (its 78 here in the middle of Florida)________________________________________________________________________________Subject: RE: Pietenpol-List: Jury Strut - flying wing strut attach method
Re: Pietenpol-List: Re: Funk piet and Riblett airfoil
Original Posted By:
I'll email them when I get some time.----- Original Message -----
I'll email them when I get some time.----- Original Message -----