Mark Steitle wrote:

I'll soon be starting on the fuel system for my 20B Lancair ES.  Not

FWF,

but everything aft of the firewall.  I was planning on plumbing two RWS
electric pumps & filters in parallel, downstream of the fuel selector

valve.

The Lancair manual was written assuming I am doing a typical engine
installation and calls for a Cessna style gascolator.  I have two
questions, for those that are past this point.  1) Is a gascolator of

any

value when using a RWS EC-2 system?  2) Is a boost pump of any value
(upstream of the gascolator).  If you respond, an explanation of your
answer would be appreciated.
Thanks,
Mark S.
Austin, TX

-Barnhart wrote:

Mark,

Working on the fuel system also.  Still going with a 20bt. Running two 3/8
fuel feed lines to a Andair 500 (1/2 inch) gascolator set up at the lowest
point in the fuel system. This is a high wing with two pickups. A 3/8 in the
back of the wing with a 1/4 up front near the leading edge.  Will also be
paralleling fuel pumps and filters.  Talked to Tracy  (Lefty) and it seems
that the RWS electric pumps are great for a 13B and a NA 20b, but may be a
little small for a 20bt. Maybe run both fuel pumps for higher fuel burn and
one pump for cruise. Was thinking about looking for  30 gallon/hour electric
pumps  and matching hose size fuel filter that had threaded fittings instead
of hose barbs. Running a 1/4 return line back from the feed rail that will
feed both tanks. Will probably have shut offs so that I can put the fuel in
the tank of choice or both open to feed both tanks. Not sure yet what size
to run for hose between the fuel filter and feed rail. Probably will be the
same size as the electric fuel pump and filter  fittings. Forgot to ask
Tracy for fuel pressure rating on the pumps. The catch to the 30 gallon/hour
fuel pump is that alot of fuel (about 15 gallons/hour) would be returned
while flying an economy cruise. Fuel pumps, filters, and gascolator going in
cabin area under floor. Thought about putting a 5 gallon header tank under
the floor, but it was a fleeting idea. Feed coming through the firewall on
the cold side of engine,absolutely  no fuel related stuff anywhere near the
exhaust systems.

  If Bob is going with 350 hp turboed, that will definely need bigger fuel
pumps.  What is Bob doing?

Getting my Hurley modified 3mm rotors back from Pineapple next week.

Barny
MGDQ- 

 
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