Brodhead Pietenpol Association

Original Posted By: Michael D Cuy

Original Posted By: BARNSTMR(at)aol.com

Original Posted By: "Larry Nelson"
Larry there are some much more simple solutions than moving the wing. Yousimply need enough ballast in the form of bags of lead shot or sheet of leadin a secured position somewhere forward of the empty plane's CG.I've got a Cozy IV. The damn thing will fall over on it's rear prop unlessyou put 40# in the nose area. The min. front seat weight is 250#. Some FAAskinny guys 170# guys have to tote around an extra 20# of lead shot out inthe nose so they can fly alone. So ALL IS NOT LOST.Number one chore- Go thru the procedure that was outlined in earlierposting. Find out exactly where the loaded CG is with you and a full tankof fuel. Using the LE of the wing as datum. Mark that point on the wing.Your wing should have a chord of approx. 60". Your loaded CG (you and apassenger) with an empty gas tank can never fall back of 33% of chord or 20"behind the LE of the wing.Now set a limit for your plane for how much weight you're gonna allow in thefront seat and how much the pilot has max. can weight. For example 200#passenger and #250 pilot. Plus 20 gallons of fuel at 6 #/gal, does thisexceed you Gross max weight on your certification. You have to placelimits. on each group of things. Baggage, passenger, fuel, pilot, stuffetc.NOW- and only after you've collected the data you need above. Calculatewhere and how much ballast you'd have to put somewhere secure in the enginecompartment or in front of the fuel tank or anywhere out in front of the LEof the wing. In order to assure, when you're at max. passenger weight andyou're at max. pilot weight and you've got empty fuel tanks. You never everhave that loaded configuration GC slid back behind the 20" from LE.Remember as you are flying along with max. fuel, as it burns off, you'reloaded CG is sliding back toward the 20" mark.NOW- determine if your new loaded configuration of ballast plus fuel pluspeople puts you loaded CG in front of 25% of chord, or 15" from the LE.Fully loaded. This number is a little more flexible and could be 20-25% dueto the authority of your horizonal stab and your elevator. IF your elevatorcan't lift the nose off the ground at normal takeoff speed, then it's notgot enough authority. You'll have to give up a some ballast and some max.pilot weight.All is not lost."The whole aim of practical politics is to keep the populace alarmed, henceclamorous to be led" ; )...................MenckenGordon Bowen----- Original Message -----

Original Posted By: "Carl D. Vought"

Original Posted By: Galen Hutcheson

Original Posted By: Clif Dawson
Subject: Re: Pietenpol-List: Weight and Balance FunIn a message dated 10/8/04 11:47:12 AM Central Daylight Time, lnelson208(at)yahoo.com writes:>Larry,You are certainly on the right track. Aft CG is a dangerous place to be. You will probably Never load it to be forward of forward CG. I've Never heardof a Pietenpol with a forward CG problem. I agree with Mike C. about moving the wing back (at least) 2". Keep in mind that by moving the wing 2" back willnot move the CG forward a full 2", therefore you should re-weight it after youhave the wing temporarily secured in position, and do your calculations. Adding ballast gives me the Hiebie Jiebies !! Use the design for what it was intended for, and move the wing. I doubt if you will be able to re use all ofthe cables, though...one will be too long, and the other too short. On the longones, you might be able to carefully cut, and re do one end, just remember the portion of the cable that is consumed in the loop at the end. If you nickany of the strands while cutting off the nico press sleeve, the cable is scrap. Mount it in a vise, and use a hack saw to cut just most of the way through, then pry it apart with a screwdriver. I've also used a dremmel tool with a thin cut off wheel to cut most of the way through, then use a screwdriver to pryit apart, and two pair of pliers to spread it apart and remove it.Chuck G.________________________________________________________________________________Date: Fri, 08 Oct 2004 22:51:07 -0700

Original Posted By: "Textor, Jack"
Subject: Re: Pietenpol-List: about to begin??In a message dated 10/11/04 2:31:25 PM Eastern Daylight Time, Rcaprd(at)aol.com writes:> Jack,> Bernard Harold Pietenpol built either 24 or 26 Air Campers. Doc Mosher's > directory lists them. No two of them were exactly alike. The last two were > > built in 1960 and 1964, with Corvair engines.> It might be interesting to post details of the airplanes that BHP did build. Chronological order and what improvements, or modifications he made on each one would be good "historical" information. Engine type, Empty weight and where the airplane is now also.________________________________________________________________________________Subject: RE: Pietenpol-List: Weight and Balance FunDate: Tue, 12 Oct 2004 08:11:29 -0500

Original Posted By: "Textor, Jack"
Jack,Fuselage-to-strut attachment locations don't change. The fittings are designed to allow the struts to pivot fore and aft allowing the wing position to change in relation to the fuselage.Greg CardinalMinneapolis----- Original Message -----