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601zv(at)ritternet.com
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 Posted: Fri Feb 16, 2007 4:40 am Post subject: fiberglass wingtip fit |
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Re: first question -
I had about 3/8" gap at the front of wingtips. I used FiberFil Lightweight
Epoxy Filler from ACS to reshape the tips and eliminate all gap. Seems to be
a handy easily worked filler to help clean up many of the poor factory parts
fits.
Robin in AR
601XL Zen-Vair, N601ZV reserved
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naumuk(at)alltel.net
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| Posted: Fri Feb 16, 2007 4:12 pm Post subject: fiberglass wingtip fit |
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All-
For God's sake, I thought this was over with the XL-3/8" of putty is not
acceptable!! Check the archives- this is one subject that HAS been flogged
to death.
Bill Naumuk
HDS Fuselage
Townville, Pa
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naumuk(at)alltel.net
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| Posted: Fri Feb 16, 2007 6:11 pm Post subject: fiberglass wingtip fit |
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To be more specific, +/-2mm = +/-.0792. 3/8"= .375. It's your plane, but I
rest my case.
Bill Naumuk
HDS Fuselage
Townville, Pa
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p.mulwitz(at)worldnet.att
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| Posted: Sat Feb 17, 2007 3:52 am Post subject: fiberglass wingtip fit |
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Hi Bill,
I take a different view of the fiberglass gap in the wing tip.
I think the 3 mm measurement limit specified in the builder's manual
is a general tolerance limit for structural components. In any case
where this limit is exceeded it is time to call for technical support
and professional engineer judgement whether to accept the design
change or rebuild the part or structure in question.
In this case, the fiberglass is essentially a fairing rather than a
critical structural component. The gap in fitting this fairing to
the aluminum skin occurs in a place where there is normally no air
flow anyway since the skin is outside the fiberglass. I think it is
OK to fill this gap with any sort of material that you can get to
stick in there.
I realize this could be a minority opinion. Still, I have to
conclude that the strength required for the fiberglass wing tip only
needs to be enough to keep it from falling apart in flight.
Paul
XL fuselage
| Quote: |
To be more specific, +/-2mm = +/-.0792. 3/8"= .375. It's your plane,
but I rest my case.
Bill Naumuk
HDS Fuselage
Townville, Pa
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gboothe5(at)comcast.net
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| Posted: Sat Feb 17, 2007 5:50 am Post subject: fiberglass wingtip fit |
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..I used a hand-flanging tool to roll the edge enough to fill the gap...why
introduce more stuff? Keep it simple....
Gary Boothe
Cool, CA
601 HDSTD, WW Conversion 90% done,
Tail done, wings done, working on c-section
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naumuk(at)alltel.net
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| Posted: Sat Feb 17, 2007 6:49 am Post subject: fiberglass wingtip fit |
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Which is a technique I first saw on Jeff Small's plane (Although he used
a different tool) and used on mine.
I'm not very familiar with XL construction, but two things surprise me.
One, that the general tolerance has been increased to +/- 3mm, and two,
considering all the problems people have had over the years re: fiberglass
wingtip fit that an alternative wasn't implemented. The time and
installation frustration savings would be considerable.
do not archive
Bill Naumuk
HDS Fuselage
Townville, Pa
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bryanmmartin
Joined: 10 Jan 2006
Posts: 1018
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| Posted: Sat Feb 17, 2007 10:18 am Post subject: fiberglass wingtip fit |
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I had little trouble getting my fairing to fit snugly into the skin.
But then, Mine didn't sit in storage very long before I installed
them. Apparently, these fiberglass pieces tend to sag a bit when they
are stored a long time.
--
Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus redrive.
do not archive.
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_________________
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Bryan Martin
N61BM, CH 601 XL, Stratus Subaru.
do not archive. |
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naumuk(at)alltel.net
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| Posted: Sat Feb 17, 2007 3:59 pm Post subject: fiberglass wingtip fit |
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Bryan-
Yes, they do. I had all kinds of trouble with my originals (Which were
about 2 years old), but relatively no problems with replacements.
do not archive
Bill Naumuk
HDS Fuselage
Townville, Pa
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zman601xl(at)verizon.net
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| Posted: Sun Feb 18, 2007 4:57 pm Post subject: fiberglass wingtip fit |
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From: Bill Naumuk <naumuk(at)alltel.net>
Date: 2007/02/17 Sat PM 05:59:32 CST
To: zenith-list(at)matronics.com
Subject: Re: fiberglass wingtip fit
Bryan-
Yes, they do. I had all kinds of trouble with my originals (Which were
about 2 years old), but relatively no problems with replacements.
do not archive
Bill Naumuk
HDS Fuselage
Townville, Pa
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