Today's Message Index:
----------------------
1. 02:54 AM - Re: Piet Hardware (Jack Phillips)
2. 08:30 AM - Re: 75th Pietenpol Anniversary (Michael D Cuy)
3. 11:50 AM - A-65 cost? (Jim Ash)
4. 11:59 AM - how I made my jury strut fitting....... (Michael D Cuy)
5. 03:54 PM - How about some help from one of you "engineer" types? (Jim Markle)
6. 04:26 PM - Re: How about some help from one of you "engineer (Hubbard, Eugene)
Message 1
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I don't remember, Rick. I'd have to count them and some of them are buried
inside the fuselage or wing now due to painting. To get an accurate count,
I'd have to go through the plans and figure it out just as you will.
Basically it is pretty easy. You need one turnbuckle for every piece of
cable on the airplane. The size can be determined by the cable size. AS&S
lists in their catalog the breaking strength of the turnbuckles and the
cables. SIze your turnbuckle so it is at least as strong as the cable it is
adjusting.
Good luck,
Jack
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com]On Behalf Of
At7000ft@aol.com
Subject: Re: Pietenpol-List: Piet Hardware
Jack, by the way, how many turnbuckles did you need for your Piet and what
sizes?
Rick H
As others have said, since nearly every Piet is slightly different, no list
exists. I found it best ot buy the hardware for whatever section I was
working on at the time, planning it out ahead of time by looking at the
plans. I did order one of Aircraft Spruce's hardware kits with assorted
sizes of AN hardware and found that helpful. For turnbuckles, I counted
them up ahead of time so I could buy them cheaply at Oshkosh from B&B
Aircraft supply (about half what AS&S charges). Turnbuckles are the single
most expensive hardware items.
Message 2
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| Subject: | Re: 75th Pietenpol Anniversary |
--> Pietenpol-List message posted by: Michael D Cuy <Michael.D.Cuy@grc.nasa.gov>
Larry-- are you going to Champaign/Urbana for the SAA fly-in ? I am still
'up in the air' about going to that one.
Wouldn't be that long of a trip. Would you camp or motel it ? You know
if Kinsella is going ?
Mike
do not archive
Message 3
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--> Pietenpol-List message posted by: Jim Ash <ashcan@earthlink.net>
Does anybody have any ballpark ideas on how much a zero-time experimental A-65
should cost?
And how much should I expect it to cost if I pay someone to take one that's run
out and rebuild it?
Jim Ash
Message 4
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| Subject: | how I made my jury strut fitting....... |
Hey guys--- Just found this in my list of chicken-scratch drawings and
thought if it might help any of you to see it. I don't think the image
size is too big so I decided to attach it.
Mike C.
Message 5
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| Subject: | How about some help from one of you "engineer" types? |
I need to mount a step somewhere near the front of my fuse so I can get up to the
center section tank in case (well, ok, WHEN) there's not a ladder handy.....
So I'm thinking about mounting a length of round 5/8"-.095Wall Thickness (WT) 4130
tubing inside a piece of 3/4"-.058WT tubing so that it can telescope out around
6" or so......and that will be my step.....
I have no idea even what range of sizes to plan for without doing some tests, a
VERY expensive process when using 4130......
Any estimates on what kind of load this setup would handle? Or what other combinations
might come close to handling 200lbs plus a fuel can (maybe an additional
40lbs)?
jm
Message 6
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" types?
| Subject: | How about some help from one of you "engineer |
" types?
The way I see it, you have 200 lb on the 6" side of a lever giving 2400 lb
on the 1/2" side of the same lever (well, 5/8", but 1/2" is easier to
calculate). The top half of the tube will be in tension, and to the extent
that pi=3, you have about 0.2" sq inches of cross section (3 x 5/8 x .095).
Total tension on the 4130 is 12,000psi. Since 4130 is good for 50,000 psi
or so, you should have a safety factor of about 4. Seems OK to me. Make
sure that you have enough of a lever arm on the inside that you don't
overstress the wood where you anchor the 3/4" tube--spruce is only good for
about 900 psi across the grain (as I remember).
Gene
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com]On Behalf Of Jim Markle
Subject: Pietenpol-List: How about some help from one of you "engineer"
types?
I need to mount a step somewhere near the front of my fuse so I can get up
to the center section tank in case (well, ok, WHEN) there's not a ladder
handy.....
So I'm thinking about mounting a length of round 5/8"-.095Wall Thickness
(WT) 4130 tubing inside a piece of 3/4"-.058WT tubing so that it can
telescope out around 6" or so......and that will be my step.....
I have no idea even what range of sizes to plan for without doing some
tests, a VERY expensive process when using 4130......
Any estimates on what kind of load this setup would handle? Or what other
combinations might come close to handling 200lbs plus a fuel can (maybe an
additional 40lbs)?
jm
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