Today's Message Index:
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1. 06:34 AM - OT Santa Airplane Joke (Tim Verthein)
2. 09:51 AM - Wing drag cables and fittings (Michael Perez)
3. 01:41 PM - Re: Wing drag cables and fittings (Mike Tunnicliffe)
4. 03:41 PM - Re: Wing drag cables and fittings (Michael Perez)
5. 03:55 PM - A65 parts for sale (Steve Singleton)
6. 04:48 PM - test (Steve Singleton)
Message 1
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| Subject: | OT Santa Airplane Joke |
Every morning on my radio show I read a "Joke for the day" and they are pretty
much always pretty bad jokes, either form my collectin of really old joke books,
or sent in, emailed in from listeners, etc. Friday, I received this joke and
used it on the show and thought that this was a good one to share with other
flying minded individuals. So, hopefully you haven't heard this one yet and
don't mind the OT post. Here we go-
Santa Claus, like all pilots, gets regular visits from the Federal Aviation Administration,
and the FAA examiner, Orton, arrived last week for the pre-Christmas
check ride.
In preparation, Santa had his elves wash the sled and bathe all the reindeer.
Santa got his logbook out and made sure all his paperwork was in order. He knew
they would examine all his equipment and truly put Santa's flying skills to the
test.
The examiner walked slowly around the sled. He checked all the reindeer harnesses,
the landing gear, and even Rudolph's nose.
He painstakingly reviewed Santa's weight and balance calculations for sled's enormous
payload.
Finally, they were ready for the check ride. Santa got in and fastened his seat
belt and shoulder harness and checked the compass.
Then the FAA examiner hopped in carrying, to Santa's surprise, a shotgun.
"What's that for!?" asked Santa incredulously.
The FAA examiner winked and said, "I'm not supposed to tell you this ahead of time,"
as he leaned over to whisper in Santa's ear,
"but you're gonna lose an engine on takeoff."
Here in beautiful Bovey, MN, looking for 14 inches of new snow between now (Sunday
morning) and Monday morning. And since I'm the morning radio guy, and my wife
is a nurse, we pretty much have to make it to work in the morning, so we're
busy keeping the driveway clear and the truck and car pointed toward the road!
Tim in Bovey
Message 2
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| Subject: | Wing drag cables and fittings |
I am confused with how cables, turnbuckles and fittings are rated. I see th
at 3/32 GALV. 7X19 cable is rated at 1000. An appropriate turnbuckle is rat
ed at 1600. 4130 is rated around 97,000 PSI and T6061-T6 about 45,000 PSI t
ensile. I can't figure out what these numbers really mean. I understand the
load numbers but am lost with the PSI tensile. How does PSI compare to-p
ounds as-used in the cables and turnbuckles?-(It's not as easy as divid
ing PSI by 144 is it?)
-
How much force does the wing drag cables see besides the tension put on the
m at assembly?
-
It seems to me that the steel cable and .080 4130 is overkill. Unless there
are loads at work that I just don't "see".
Message 3
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| Subject: | Wing drag cables and fittings |
Hi Michael, psi is pounds per square inch, if a piece of 4130 has a cross
sectional area of .1 square inch it will be able to carry up to 9,700 pounds
before it fails, ie: 97,000 psi x .1 square inch = 9,700 pounds. Normally
you would allow a safety factor which may be 50%, so the safe maximum load
on the .1 square inch piece of steel would be 6466 pounds. Hope this
clarifies things Mike T.
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Michael
Perez
Sent: Monday, 15 December 2008 6:51 a.m.
Subject: Pietenpol-List: Wing drag cables and fittings
I am confused with how cables, turnbuckles and fittings are rated. I see
that 3/32 GALV. 7X19 cable is rated at 1000. An appropriate turnbuckle is
rated at 1600. 4130 is rated around 97,000 PSI and T6061-T6 about 45,000 PSI
tensile. I can't figure out what these numbers really mean. I understand the
load numbers but am lost with the PSI tensile. How does PSI compare to
pounds as used in the cables and turnbuckles? (It's not as easy as dividing
PSI by 144 is it?)
How much force does the wing drag cables see besides the tension put on them
at assembly?
It seems to me that the steel cable and .080 4130 is overkill. Unless there
are loads at work that I just don't "see".
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Message 4
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| Subject: | Wing drag cables and fittings |
So, say-a wing strut fitting is 1" X 10" X .080. Would the cross sectiona
l area be-.080? square inches?- If this is right, then that piece made
of 4130 would be able to carry, (97,000 X .080) about 7,760lbs? If that fit
ting was doubled, as the wing strut fittings are, (one-piece each side of
the spar) then the total load capability of the fitting would be around 15
,520 lbs? Or would it still be "rated" at 7,760 because that is when one si
de could fail and render the entire fitting failed?
Message 5
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| Subject: | A65 parts for sale |
Hi everyone. We sold our Champ and will be getting started back on
building the Piet so i thought i'd offer a few extra A65 motor parts
that i have collected for sale to the Piet group if anyone is
interested. I plan on useing a Model A (tough decision). Its
embarrassing to say how little i've accomplished on it so i won't. I
have four good cylinders(steel) that will make good cores. My A/P motor
guy thought they would not need to be chromed. Two Camshafts that are
not yellow tagged but my A/p told me to make sure and not pitch them.
Crankshaft and camshaft gears. Four rods and caps that would need
rebushed i'm sure. Four valve covers. A good Taper Shaft Prop Hub( were
useing it untill overhaul when i found a good Flanged Crank). A set of
bushings for a McCaully Prop. Also have the taper shaft crank but it
will need to go Twenty under to be worth anything. I may have a few
other small parts but thats about it. Most of what i have is not high
dollar items but Cylinders, Prop Hub, and bushing i'd expect current
market valve. Make me an offer if anyone is interested. Would be willing
to spilt up parts. Thanks. I'm located (Hale MO) 50 miles north of I-70.
Not home much so try my cell 660 214 0029
Message 6
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