Today's Message Index:
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1. 06:54 AM - Plexiglass - remove and re-install - RV-9A Tip-up (Joe & Jan Connell)
2. 08:05 AM - Re: Re: Fuel System Diagram (Panama Red)
3. 08:10 AM - Re: Plexiglass - remove and re-install - RV-9A Tip-up (Jim Fogarty, Lakes & Leisure Realty, Inc.)
4. 05:56 PM - Re: was Fuel System Diagram, now gascolator redux (glen matejcek)
Message 1
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| Subject: | Plexiglass - remove and re-install - RV-9A Tip-up |
Guys,
I need to replace the skin on the tip-up canopy on my RV-9A. I may also
have to replace the front canopy weldment assembly. The Plexiglas has
already been fiber glassed in front.
Has anyone been able to remove the Plexiglas and re-install it again? A
local RV builder has replaced his cracked Plexiglas by using a thin,
narrow sharpened putty knife between the fiberglass fairing and the
skin. He also use a Dremel grinder to expose the front clips holding
the Plexiglas.
ANY suggestions would be very welcome...
Thanks.
Joe Connell
Stewartville, MN
Message 2
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| Subject: | Re: Fuel System Diagram |
Bob-
Please explain how this would occur provided that the device were
properly installed and purged of water before flight.
-GV
In a message dated 9/29/2009 9:28:37 A.M. Pacific Daylight Time,
panamared505@brier.net writes:
> To each his own, but my money (and rear end) is on the simple
physics of a
> gascolator.
Simple physics of the gascolator may get one killed while in
sustained
inverted flight!
Bob
I agree if properly installed and the entire fuel system is purged of
water prior to flight. So then what is the purpose of a gascolator?
In my fuel injected system and most others that I know of, there is a
very fine fuel filter prior to the high pressure boost pump, to protect
the boost pump. Therefore if one had a gascolator after the fuel
filter, the gascolator would not filter out any large debris. On the
other hand, if one did not have a fuel filter prior to the cascolator
the possible debris caught by the gascolator may then end up back in the
fuel flow once gravity is reversed in reference to the gascolator
(inverted flight).
I assume, but may be wrong, if the gascolator did collect water while
upright, then wouldn't this water then enter the fuel system while
inverted? I have always thought that the force that made the gascolator
work was gravity, reverse gravity and it does not work? How many pilots
are able to do an engine restart while inverted? The obvious answer is
to roll upright and attempt to start the engine, but trust me, when the
engine quits while inverted, it gets real exciting, especially if one is
foolish enough to be at a critically low altitude.
In my 30 years of flying, I have only found water in the fuel once.
That was after I left the RV out in the rain with the fuel caps removed
from the tank (a long story). I keep looking for water in my tanks,
especially since I hanger my RV with tanks 1/4 to 1/2 full.
Disappointed am I, that l find no water in the tanks. I have found the
entire outside of the aircraft wet from sweat/humidity on rainy days
while in the hanger. I have often opined that the RV would be dryer if
I parked it in the rain rather than in the hanger! But still no water
in the fuel tanks!
Back to the original question, if there is no water in the fuel system
and the fuel filter eliminates all the fuel debris in the system, what
is the purpose of the gascolator?
Bob
RV6 "Wicked Witch of the West"
Message 3
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| Subject: | Re: Plexiglass - remove and re-install - RV-9A Tip-up |
Joe, Look at your pictures online, Chapter 100, everything looks good,
however, I don't see a photo of the tip-up. Want is the problem with
the skin?
Jim
RV9a building
----- Original Message -----
From: Joe & Jan Connell
To: RV-List
Sent: Wednesday, September 30, 2009 8:49 AM
Subject: RV-List: Plexiglass - remove and re-install - RV-9A Tip-up
Guys,
I need to replace the skin on the tip-up canopy on my RV-9A. I may
also have to replace the front canopy weldment assembly. The Plexiglas
has already been fiber glassed in front.
Has anyone been able to remove the Plexiglas and re-install it again?
A local RV builder has replaced his cracked Plexiglas by using a thin,
narrow sharpened putty knife between the fiberglass fairing and the
skin. He also use a Dremel grinder to expose the front clips holding
the Plexiglas.
ANY suggestions would be very welcome...
Thanks.
Joe Connell
Stewartville, MN
Message 4
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| Subject: | Re: was Fuel System Diagram, now gascolator redux |
>> To each his own, but my money (and rear end) is on the simple physics of
a
>> gascolator.
>
>Simple physics of the gascolator may get one killed while in sustained
>inverted flight!
>
>Bob
>RV6 "Wicked Witch of the West"
I'd sure like to know what you are basing that commentary on. Each of the
5 or so Decathlons we ran through our aerobatic program lo those many years
ago had a gascolator, and we spent a significant amount of time inverted
with each student. Never once had a problem with any of them. The
gascolators, that is...
WRT to the pressure issue and the potential for leaks, mine is located in
the left wing root and is plumbed between the selector valve and the boost
pump. This makes for easy and convenient draining through a hole in the
bottom of the wing gap seal / fairing. It also keeps it away from the
engine compartment heat, as well as the possibility of shearing it off the
bottom of the firewall in a forced / crash landing.
glen matejcek
aerobubba@earthlink.net
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