Today's Message Index:
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1. 06:13 AM - Re: NEOPRENE HOSE (mark_trickel)
2. 06:56 AM - Re: Sun-N-Fun 2015 (mark_trickel)
Message 1
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| Subject: | Re: NEOPRENE HOSE |
The 3/8 I.D. Neoprene hose included in KIS kits was intended for the fuel line
connection between the fuel tanks, and the fuselage. The manual is a little vague,
but there is a drawing of a typical aircraft fuel system included in the
TR-1 Builders Manual (Airframe Assembly section page 8 ). I did not check, but
I am sure the same drawing is in the TR-4 Builders Manual. The drawing comes
from our faster, sleeker, and much more difficult to build cousin, the Lancair
235/320.
The black rubber hose is a very important piece to the KIS aircraft. I can think
of 2 real important reasons for this hose. First it makes hooking up the fuel
tanks simple. It would be a lot harder to install a metal piece of tubing in
this tight spot. Second when a wing panel breaks off in a crash, the neoprene
fuel line would separate very easily - you wont have to worry about the fuel
line whiplashing about the cockpit (hopefully you all have plenty of Adell clamps
or the like securing the fuel line inside the cockpit).
Vinyl tubing was also included in KIS kits for use in the pitot static system.
Some items included in the kits in fact have a shelf life, and that includes the
neoprene, and vinyl tubing (tires, unused resin and adhesives). KIS kits are
now reaching the 25 year old mark, and owners that have KIS aircraft built with
these original materials need to seriously think about replacing or upgrading
them if they have not done so already. The vinyl tubing in my 23 year old
is still somewhat serviceable, but I am upgrading to Nyloseal tubing, and fittings
- those will last a few lifetimes.
Some builders did not follow the Builders Manual, its just the nature of homebuilt
airplanes. Some installed that black rubber hose from the fuel tanks all the
way through the cockpit to the firewall (a very bad idea). My TR-1 had that
black hose from the tanks through the side of the fuselage, then slid onto the
aluminum tubing (no barb) held on by 2 hose clamps, running 45+ psi automotive
fuel pumps in each wing slosh tank. The return came from the firewall fitting
into vinyl tubing, to the fuel valve, back into vinyl tubing to the tanks.
That tubing is now petrified. Whats in your fuel system?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=439763#439763
Message 2
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| Subject: | Re: Sun-N-Fun 2015 |
Galin - Fabricio I am reasonably certain I will be at Sun N Fun later in the week.
I will probably be helping Mark K. with his engines in the Ultralight/LSA
display area.
Robert If you are inspired by the recent article in Kitplanes about the wraps
one concern I would have, and one that was not discussed in the article is about
removing the wrap years down the road. I have a buddy that works in a shop
that does wraps on automobiles, and I asked him that question (many years ago)
he said they will guarantee a clean removal only on factory painted surfaces.
They cannot guarantee the paint will not come off with the wrap on any repainted
surfaces. Paint jobs done in the factories are baked on. Finishes we commonly
spray on our airplanes are not nearly as durable as finishes done in a huge
factory. You would still have to have some kind of fill, and primer on the airplane
before you wrap it, but even those finishes may be jeopardized when removing
the wrap. My experiences removing the vinyl stripes of my TR-1, even with
an industrial heat gun getting it hot enough to almost bubble the paint the
surfaces under the paint are still peeling off with the stripes all the way down
to the fiberglass weave.
At the airport where my dad, and I kept our airplanes there was a local auto body
guy that would come out a shoot the paint on an airplane for a reasonable price.
Maybe an ad on craigslist could find someone near you worthy of the task.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=439766#439766
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