Original Posted By: "Catdesigns"
I can sing! Is it the std. or long fuselage version?--------Location: Wilson, NCRead this topic online here:http://forums.matronics.com/viewtopic.p ... 006#220006 ________________________________________________________________________________Subject: Pietenpol-List: Re: Wing tip bow
Original Posted By: owner-pietenpol-list-server(at)matronics.com [mailto:owner-pietenpol-lis
I agree with Shad.- I used Stainless throughout on my Pietenpol.- Just make sure it is aircraft grade.- Aircraft Grade cable has lubricants added to allow it to flex without chafing that commercial grade cable does not.-I used 1 x 19 1/8=94 stainless for the drag and anti-drag wires, the cabane (roll) wires, and for the undercarriage bracing wires.- I used 7 x 19 -3/32=94 for the control cables and the tail brace wires, as well as the flying wires between the lift struts.- 1 x 19 is the strongest, but it is a bear to put thimbles on.-Jack PhillipsNX899JP-
Original Posted By: Michael Perez
Another thing to consider is if you plan to wrap and solder the cable terminals, which is easy, very inexpensive, and more authentic, you might want to use galvanized instead of stainless.Gene ----- Original Message -----
Original Posted By: "Phillips, Jack"
As I mentioned in an earlier post, my compass swings noticeably when I move thesteel tubecontrol stick forward and aft, particularly as the stick goes forward from theneutralposition. A hardwood control stick would not introduce this effect. I have neverconsideredthe cabane braces to be a factor, assuming that Corky probably swung that errorout ofthe compass when he set up the deviation card. I have never found the mag compass on 41CC to be a problem to use, despite itslimitationsand mine. Like a Tahitian dancer, it jiggles and sways as we fly along but wealways havea general idea of where we're going. When I turn the airplane, the compass doesits turnand dip error things and I don't bother with trying to turn to a specific headingbecauseroads and fences are much better for that purpose and they don't jiggle, dip, bob,andovershoot. I have never flown with a GPS or NAV in the airplane and have neverbeenmore than slightly lost.'Course then again, I've never flown the airplane more than about 75 miles in thesamedirection anyway, so there hasn't been a need to hold any certain heading for morethanan hour or so. Looking at the compass in the airplane though, I notice that Ishould probablyrefinish the face and service the fluid. Might as well swing the compass again,too, since anumber of things have changed on the airplane and the deviation card is all butunreadable.I think I'll try to get a little bit lost again this weekend, if this fog liftsby then.Oscar ZunigaAir Camper NX41CCSan Antonio, TXmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net________________________________________________________________________________Subject: RE: Pietenpol-List: mag compass interferenceDate: Thu, 18 Dec 2008 14:19:47 -0500
Original Posted By: Phillips, Jack
Jack:I am not sure that is "why" Waco used wooden sticks, lots of others did too (Jenny, etc), but just as many did not (Travel Air, etc). It got a friend of mine killed in a Waco when the stick broke off. If the stick is affecting the compass, one could always get it de-magnetized. The effect of something like the roll wires can be adjusted out with the compensators, because they are not moving, as you pointed out, like the stick.Gene ----- Original Message -----
Original Posted By: "walt"
Jack, you just reminded me that I had thought about putting a "civilian" compassup front for the very reasons you mention. I think I'll see if I can find an oldnautical one with brass trim, on a gimbal ;o) Better yet, maybe hung from theunderside of the wing centersection. The bigger, the better... I'm gettingto be "old weak-eyes".Oscar ZunigaAir Camper NX41CCSan Antonio, TXmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net________________________________________________________________________________Date: Thu, 18 Dec 2008 18:49:45 -0500
Original Posted By: walt
The wingtip accounts for a large percentage of the drag of the wing, as the higher pressure air on the bottom tries to get to the top by going around the tip rather than all the way to the trailing edge. Anything you can do to change the shape of the tip to reduce the drag is to your advantage. On a Piet, that may not matter that much because it is such a draggy airplane, but it reduces the effective lifting area around the tip. That is why jets have winglets. They use the airflow coming around the tip across another airfoil (the winglet) to produce additional lift in a forward direction, i.e. additional thrust. Anyway, everything from ath Cub, Piet, etc, which need all the advantage they can get, have shaped wingtips to reduce drag.Gene(now the engineers can give exact numbers) ----- Original Message -----
Original Posted By: HelsperSew(at)aol.com
This one was at Broadhead 2007.http://www.westcoastpiet.com/pete_smith ... -----Chris TracySacramento, CAWestCoastPiet.com________________________________________________________________________________
Original Posted By: Jack T. Textor
That is a great point Jack. Thanks for mentioning that. There are as many idea's on wing tips as there are airplanes. In our work with designing wing tips we found that they mostly just add wing area and looks. But on the Piet as Jack sights, they are also used for the compression struts. Good catch.Jerry GroganSky Classic Aircraft ----- Original Message -----
Original Posted By: "Pieti Lowell"
Ha-! He solved the problem of mag compass interference by using wooden control sticks alright... SQUARE wooden sticks=2C no less!I tell you=2C it's the simplest ones that seem to fly the most hours and spend the least amount of time in the hangar.Oscar ZunigaAir Camper NX41CCSan Antonio=2C TXmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net________________________________________________________________________________Subject: Pietenpol-List: Re: Wing tip bow
Original Posted By: "Catdesigns"
The wing tip bow wasn't on my first Piet, it was a flat board, not good looking,but made a nice place for advertising, etc. She still flew and handled OK. Iflew that bird from Florida to Wisconsin, and a bunch of years after. That alsowas my first Piet flown to Brodhead in the mid 70,s.There were a number of wings built with a square end and all flew well.Pieti LowellRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Wing tip bow
Original Posted By: Oscar Zuniga
I've seen Allan Weise's Piet many times and it flew great for 40 some years. I guess a picture IS worth a thousand words. I thought the discussion was about replacing the bowed wing tip bow with a straight piece of wood and it just wasn't working for me. Thanks for the pic. Ed> Subject: Pietenpol-Lge posted by: "Catdesigns" > > Flat tips have been done=2C and seemed to work. Mr. Weise flew this plane for a long long time with some rather interesting changes to it.> > http://www.westcoastpiet.com/n3513.htm> > > chris> > --------> Chris Tracy> Sacramento=2C CA> WestCoastPiet.com> > > > > Read this topic online here:> > http://forums.matronics.com/v======> > > ________________________________________________________________________________
Is it the std. or long fuselage version?--------Location: Wilson, NCRead this topic online here:http://forums.matronics.com/viewtopic.p ... 006#220006 ________________________________________________________________________________Subject: Pietenpol-List: Re: Wing tip bow