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mdnanwelch7(at)hotmail.co
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 Posted: Fri Jan 26, 2007 7:39 am Post subject: Rib Stitching |
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Rob,
I decided to do rib-stiching, instead of rivets on my MKIII Classic. I
have covered the upper half of one wing, and that was about 4 years ago.
I'm actually going to uncover it---and recover with new materal all the same
age on all surfaces. (I haven't finished building the plane, yet. but
soon, I hope)
As far as I know, maybe rivets are ok, I've never seen a riveted fabric
wing. But I felt stitching would give me the ability to increase the attach
points, and make a slightly smoother ridge.
Not here to criticize rivets, just chose my own preference.
I can tell you one thing....rib-stiching by yourself is a joke. Running
in circles around the wing is a diizzying nightmare. You REALLY want to
find a competant helper if you are going to rib-stitch. But, if I can't
find a helper, then I'm going to rivet!!!!
Oh, BTW, Dondi recommends the narrower reinforcing tape than the 1/2" wide
stuff we're normally supplied with, for stitching.
Yay!!!! Yesterday, I went down to the local building dept. and picked up
the permit for my (airplane) shop. Picked up the pool permit on Wednesday.
So, officially today I begin tractor work
on my pool and shop. (I've been a concrete and general contractor for 30+
years)
Have a pleasant day all. I, for one, hear a tractor calling my
name..............Mike in Utah
FYI I saw on the weather this morning, we in St. George are about double
Salt Lake City's temp.
We should get to 59, they'll see 31 degrees. We're kind of the balmy part
of the state.....much like Vegas weather...........gotta go.
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Don G
Joined: 10 Jan 2006
Posts: 156
Location: Central Illinois
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| Posted: Sun Jan 28, 2007 1:50 pm Post subject: Re: Rib Stitching |
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I distinctly remember my old airframe instructor back at Spartan telling us that on flat ribs...you stitch em...on round ribs, you rivet em.
I cannot remember if it was a FAA requirement, but the 4113 manual should give the answer there. I acknowledge it might not be applicable to experimental class birds, but I considered it quite seriously when I built my wings..after much rumination,,I considered the history of the riveted round ribs was plenty good and the chance at making "puckers" in the fabric around the round rib with a stitch caused me to rivet them. I know the puckers wouldnt show after applying the wide tape, but the pucker seems like a weakspot in fabric/rib connection, and thats what keeps the ribs in column under mucho stresso..
maybe a fella oughta try a test piece of stretched fabric over a round rib to get the hang of it before jumping in on a nicely covered wing.
Might cause a man to decide the rivets are acceptable. maybe not
Just a few contributing thoughts..in caseyou have not considered them.
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_________________
Don G.
Central Illinois
Kitfox IV Speedster
Luscombe 8A
RV9A |
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DAquaNut(at)aol.com
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| Posted: Sun Jan 28, 2007 2:07 pm Post subject: Rib Stitching |
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In a message dated 1/28/2007 3:51:43 P.M. Central Standard Time, donghe(at)one-eleven.net writes:
| Quote: | Might cause a man to decide the rivets are acceptable. maybe not
Just a few contributing thoughts..in caseyou have not considered them.
--------
Don G
FireFly#098
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Don,
Do you or anyone else know of a situation where rivets did not hold the fabric well enough or caused a structural failure! I havent heard of any! I took an aluminum straight edge and marked my rivet spacing on it 1 time and then layed out the holes on All of the ribs In short order. Made a drill fixture out of a piece of tubing and drilled the holes fairly quick. If I built another one that is what I would do without question. That is the beauty of building it yourself!
Ed Diebel (FF #62)
[quote][b]
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Sun Jan 28, 2007 2:18 pm Post subject: Rib Stitching |
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| Do you or anyone else know of a situation where rivets did not
hold the
| fabric well enough or caused a structural failure! I havent heard
of any! |
| Ed Diebel (FF #62)
Ed:
Fabric riveting of fabric is a certified method of attachment. Will
not cause your wings to fall off.
john h
mkIII
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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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