Brodhead Pietenpol Association

Original Posted By: "Cuy, Michael D. (GRC-RXD0)[Vantage Partners, LLC]"
Subject: Pietenpol-List: FUEL TANKTHANKS FOR THE APPROVAL GUYS.I ALSO DON'T MIND CONSTRUCTIVE CRITICISM, THAT ALWAYS GIVES ME A CHANCE TO MAKE IT RIGHT.TED STONE________________________________________________________________________________

Original Posted By: "Dortch, Steven D MAJ MIL USA NGB"
Subject: Pietenpol-List: Re: FUEL TANK> > Ted,> Rather than typing everything with Caps Lock on, why not just type everythingin lower case, and not worry about capitalization of letters?> > IT'S JUST HARDER TO READ WHEN EVERYTHING IS IN CAPITAL LETTERS, AND IT FEELSAS THOUGH THE READER IS BEING SHOUTED AT.> > see what i mean?> > Just a thought.> > Bill C.> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 082#393082> > > > > > > > > > ________________________________________________________________________________

Original Posted By: Michael Perez
Ted,Rather than typing everything with Caps Lock on, why not just type everything inlower case, and not worry about capitalization of letters?IT'S JUST HARDER TO READ WHEN EVERYTHING IS IN CAPITAL LETTERS, AND IT FEELS ASTHOUGH THE READER IS BEING SHOUTED AT.see what i mean?Just a thought.Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Sat, 26 Jan 2013 07:37:38 -0800 (PST)

Original Posted By: Dan Yocum
PF,I am very appreciative of what you guys have done with this report. Real data is always better than opinion when trying to assess things like performance.My project has been stalled for several years thanks to a number of factors, not the least of which being trying to turn an old, worn-out farm into a working, profitable one (and holding down a part time teaching job at the same time to pay the bills while we get the farm on its feet), but I will be moving on to making ribs and wings in the next couple of years, and I've been contemplating which way to go.As far as performance goes, I'm a bit surprised to see such minor differences. I wonder how much the VG's on your wing contribute to performance? It would be interesting to learn whether or not that's a significant factor in the performance of your wing. The other difference I'm thinking about is that, when using a center section fuel tank, which I'm planning to do, I think the Riblett has more potential capacity. When using a Corvair, that may be a consideration, since it has a higher fuel consumption rate than an A-65. The other issue that your work does not address (and I'm not sure it can, but maybe you'll look at this later) is the potential difference in CG envelope on comparable planes.Kip GardnerOn Jan 25, 2013, at 2:56 PM, Barnwell Regional Airport wrote:> Fellow Pietenpoler's,>> For some time, Don Harper and I had planned to write up the results > of a "head to head" test comparing the Pietenpol airfoil to the > Riblett airfoil. To the best of our knowledge, no one else has > conducted the same type testing.>> The write up is self explanatory as to our methods.>> Remember, testing is ongoing and will continue. The various numbers > you see now very likely will change as we do further testing. > Updated results will be posted when we have something worthwhile to > add..>> Our intend, is to share the information with the Piet community, not > to start an argument.>> thank you,>> P. F. Beck> Don Harper> Barnwell, S. C. Panel (Small).JPG>________________________________________________________________________________

Original Posted By:> owner-pietenpol-list-server(at)matronics.com [mailto:owner-pietenpol-li
What about the vortex generators? That's a major difference in my opinion. I'd like to see the same number and type of vortex generators put on the 612 to see if there's a difference. Also, were the gross weights at take off the same? Maybe I missed that in the text. Great information! Thanks for doing this. Dan-- Dan Yocumyocum137(at)gmail.comOn Jan 26, 2013, at 6:17 AM, "Jack Phillips" wrote:> Very interesting, PF. Please keep us updated. I must admit, I expected to see some advantage to the Riblett, but there doesn=99t appear to be much if any. Perhaps further testing will reveal something. Otherwise it looks like, once again, that old Pietenpol fellow really knew what he was doing when he designed this airplane.> > I agree with Mike Cuy =93 looks like this would be an excellent topic for a forum at Brodhead.> > Jack Phillips> NX899JP> Smith Mountain Lake, Virginia>

Original Posted By:>> owner-pietenpol-list-server(at)matronics.com
Dan,that was part of my question. PF's wing (original Pietenpol) was the one with V.G.'s. I would think that would substantively change performance & I would like to see 2 additional 'experiments 9although PF says he's leaving his VG's on, so one experiment would have to be with another, comparable plane). First, a comparison of Don's plane to a plane with a 'clean' Pietenpol airfoil, and secondly, as you suggest, a comparison of PF's plane with Don's after putting VG's on Don's wing.It appeared from what PF wrote that they made a good effort to make sure that takeoff weights were as close to the same as practical.Kip GardnerOn Jan 26, 2013, at 12:24 PM, Dan Yocum wrote:> What about the vortex generators? That's a major difference in my > opinion. I'd like to see the same number and type of vortex > generators put on the 612 to see if there's a difference.>> Also, were the gross weights at take off the same? Maybe I missed > that in the text.>> Great information! Thanks for doing this.>> Dan>>> -- > Dan Yocum> yocum137(at)gmail.com>> On Jan 26, 2013, at 6:17 AM, "Jack Phillips" > wrote:>>> Very interesting, PF. Please keep us updated. I must admit, I >> expected to see some advantage to the Riblett, but there doesn=92t >> appear to be much if any. Perhaps further testing will reveal >> something. Otherwise it looks like, once again, that old Pietenpol >> fellow really knew what he was doing when he designed this airplane.>>>> I agree with Mike Cuy ' looks like this would be an excellent topic >> for a forum at Brodhead.>>>> Jack Phillips>> NX899JP>> Smith Mountain Lake, Virginia>>