Bill Freeman wrote:

Paul,

DO  NOT - Use  the sexy looking, expensive stainless braid
exterior, teflon-lined hose.  Why?  The FALSE story is that the
teflon hose lasts forever, so even if it costs many times what
the H-8794 hose does it is worth it.   Let me repeat THIS IS
FALSE.   The teflon hose has an unlimited SHELF LIFE,
**not** service life and should be replaced every decade or
sooner, just exactly like H-8794.  Also, this hose is known to have
caused fuel system fires if the teflon gets too hot and starts to flow
and break down. If you doubt the above, go to Parker's web site
and verify it.

http://www.parker.com/fcg/index.htm

Bill do you have the exact page address where it talks about
teflon verses rubber?

DO - Use Mil  H-8794 fuel line (cloth braid exterior, steel braid
next, then rubber liner).

Mil H-8794 is met by Aeroquip 303 hose with Aeroquip 491
fittings or Stratoflex 111 hose with 111 fittings.  This hose is
rated at 2,000 psi operation pressure in the 3/8" ( -6) size.

DO - Put fire sleeve on all fuel lines on engine side of firewall.

DO NOT - Use any fuel valve that uses a tapered brass plug
in a brass body.   I think the brand is Weatherhead.
 These WILL seize and CANNOT be kept permanently lubed
well enough to work reliably.  This has been fought for many
decades by Piper and verified for over a decade by Rutan designs.
Piper finally gave up and commisioned a direct replacement (no
changes to lines, fittings, mntg bolts, etc) which Wickes
sells and works beautifully, if more expensive.  I have flown it
for 10 yrs and it works great.  My Weatherhead was seizing up
in the garage during "play flying" during construction!

DO drill a 1/16" hole in the back of each forward facing fuel
vent standpipe to keep air flowing if a big bug or ice blocks
the main inlet.

Bill

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