Today's Message Index:
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1. 10:35 AM - Fairing attachment bobbins (HMS23TURBO@aol.com)
2. 04:31 PM - Re: Fairing attachment bobbins (LRE2@aol.com)
Message 1
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| Subject: | Fairing attachment bobbins |
--> FEWMustang-List message posted by: HMS23TURBO@aol.com
Hi guys,
I have had my CNC turning shop build a couple of sets (300 + pieces) of what
I call "bobbins" for attaching all the fairings and dorsal fin. I found that
the prototype TF with the previously recommended book binding nuts was in need
of replacement of several of these due to stripping of the threads or simply
being used up. The bad news is that there isn't enough material left to re-tap
or insert these things, so I've had to dig the out and put new ones in. The
new version are 304 stainless with a 6-32 thread, and an o.d. of .625". There
are two heights needed because the core material is thicker in some of the areas
on both the wing and the fuselage (the horizontal stab. is all the same
thickness). These little guys are a piece of cake to install. Just hole saw through
one skin, clean out a bit of the core, push them in until flush, squeeze in
some adhesive with a syringe through a .062" hole in the skin nearby and you're
done. I'll get a couple of pictures today and post them. Anyway, this isn't a
sales pitch but if anyone wants some let me know, The CNC program is written
and all I need to do is make a call and the guys will turn them out.
The prototype TF is getting a new engine (LS6) and will be flying soon. We
should make arrangements if anyone wants to come out and fly it.
Ed Hullinger
TF, about 80% there. Painting the wing next week. Red.
Message 2
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| Subject: | Re: Fairing attachment bobbins |
--> FEWMustang-List message posted by: LRE2@aol.com
Ed,
As usual, you are "Right ON" with this one. I used the alum "Book
Binder Nuts"
on the dorsal fin, and found that the threads stripped out after three or
four installations. I wound up digging them all out and replacing them with ss
T-Nuts available at your friendly hardware store intended for use in furniture
building. I have used them for all of the faring installations, including the
wingroot farings and parts of the cowling. So far, none have stripped out.
Your system sounds much slicker and easier. I wish I had access to those
"little guys" a few years ago.
To those of you who haven't installed farings yet, DON'T use the book
binder nuts.
Ed's inserts may save you Hours and hours of aggravation...LRE
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