ACRO E-mail Archive Thread: [Acro] Re: New Pitts owner needs S-1S wt & bal ...
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Thread: [Acro] Re: New Pitts owner needs S-1S wt & bal ...
Message: [Acro] Re: New Pitts owner needs S-1S wt & bal info.
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From: "David Pilkington" <David.Pilkington at bigpond.com>
Date: Sun, 18 Aug 2002 08:52:55 UTC
As you're going to weigh an airplane you know little about: when its levelled - take a plumbob and drop a line to the ground at each of the points you need moment arms for. Mark a chalk line on the hangar floor then measure all the distances. You'll probably find that they are different from the book figures. For more info, see http://members.eaa.org/home/homebuilders/authors/alexander/Weight%20&%20Bala nce_%20%20Weighing%20and%20Measuring%20Your%20Safety.html DJP ----- Original Message ----- From: "rklarich" <rklarich at email.msn.com> To: <Klusmanp at aol.com>; <acro at gf24.de> Sent: Sunday, August 18, 2002 10:27 AM Subject: [Acro] Re: New Pitts owner needs S-1S wt & bal info. > Paul, > > Congrats! > > Yes, Level is the upper/top fuse. longerons. This data is from the factory > S1S aircraft owner's manual- with your height I'm sure you have at least an > S1S stock fuselage length, but if it is longer, you'll have to know where > it's longer and I'd say find the original w&b. Lateral level is accross > these top longerons in the cockpit. Tailwheel will weigh around 60-75 > pounds once up level, but more than that on the ground- careful on the back > and whatever on the tail you lift by. FS 50.44 is the main gear position, > FS 171.0 is the centerline of the fwd attach bolt on the springs for the > tailwheel- it's your fulcrum, see pg. 3 of 15 of the manual- aviat or > someone can fax you one- email if you need a fax copy, use at your own risk, > of course... 120.56 inches between the center of the fwd gear axles up > front and the fulcrum of that bolt that the tailwheel springs mount to. > Datum is 65.06 inches fwd of the leading edge of the lower wing. > > First run thru is at Zero fuel weight. Engine oil is at 33.26, radios at > 65.88 stock, full fuel is at 59.63 /120# for your full up considerations > starting acro with a full tank, maybe interpolate too for contests at 10 > gals/half tanks. Stick gets light with lots of baggage in the turtledeck > while in the flare going cross country with just legal reserves at touchdown > for some of us.... > > Say hi to the Colonel for me. > > Rich Klarich > Purdue Det 220 1989-1993 > Altus, OK > IAC 21376 > > ----- Original Message ----- > From: <Klusmanp at aol.com> > To: <acro at gf24.de> > Sent: Saturday, August 17, 2002 3:15 PM > Subject: [Acro] New Pitts owner needs S-1S wt & bal info. > > > > I finally bought a Pitts S-1S! > > > > I'm going to weigh the airplane to update the weight and balance and I > need > > to some info from you S-1S folks out there: > > > > -What is level reference on the airplane? (I'm guessing you raise the tail > to > > level the top fuselage longeron?) > > > > -Where is the datum reference? (firewall?) > > > > -Where are main and taiwheel locations relative to datum? > > > > Thanks, > > Paul Klusman > > Pitts S-1S (finally) > > > > >