Fred=2C
Gascolators do not prime well. I would check for an air leak. Andairs are
well made and pull a vacuum. The standard diaphragm pump does not pull ai
r well enough for some brands. If it won't prime the engine with 2.5 gallo
ns on the ground=2C will it do it in the air?
Ground Test war story: Ran the main dry=2C flipped to aux and it would not
self prime without more head pressure. Could not find a leak but the gasc
olator was installed slightly above tank bottom level. With 10 gallons it
would prime. It was a trigear. I know they have used gascolators in a/c f
or ever=2C but they should be the lowest point in the system. That is=2C t
he bowl outside=2C below the belly.
That is why I don't use them and won't install one. To easy to screw up.
Besides=2C water does not condense in the tanks and filters work as well.
Most experimental takeoff accidents are fuel and engine related. Make them
flawless then test for fuel exhaustion=2C on one side then switch and hope
fully keep running.
Clean your fuel lines before hooking to the engine. A common assumption is
the filter missed some dirt/ debris and the gascolators just prior to the
engine caught it. Flush and flush again.
My two cents.
Bud
Sent from my Verizon Wireless 4G LTE DROID
On Apr 17=2C 2015 8:39 PM=2C Fred Klein <fklein@orcasonline.com> wrote:
Gents
Who among you mono-builders can remember how much fuel was neededw
hen introduced to our beloved rotomolded fuel tanks for the first time
in order for fuel to flow thru the selector valve (located per build
manual) and thence aft to assorted pumps and filters?
I=99ve put in 5 (US) gallons and can get nary a drop out of my gascol
ator which is mounted aft of the baggage bay and considerably lower than th
e main and reserve fittings on the selector valve.
(Both main and reserve fuel drains function fine=2C and the aircraft is sit
ting on it=99s main LG and tail wheel.)
A corollary question is: how much unusable fuel is carried aboard a mono wi
th standard tank?
Fred
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