The Murphy Builders Site

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com]On Behalf Of
Alan Hepburn
Sent: Thursday, April 28, 2005 7:13 PM
To: rebel-builders@dcsol.com
Subject: Gascolator/Mo-gas


I have encountered a problem with the standard MAM (=ACS) gascolator
when using mo-gas. The sealing gasket swells. I notice the current ACS
catalogue says "not for use with auto fuel". This gasket would appear
to be the only reason for not using it with mo-gas. Anybody know of a
source for a suitable gasket, or do I just roll my own from cork?

Al Hepburn




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ALan:

ALan:

Hi Terry and all

I already have the Andair gascolator and fuel tank selector. I'm assured
they will both accept all types of fuel (mogas/avgas/jetA)

Nigel
745E


-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com]On Behalf Of
Terry Dazey
Sent: 02 May 2005 19:42
To: rebel-builders@dcsol.com
Subject: Re: gascolator/mo-gas

ALan:

If your Gascolator is similar to the one on my Long-EZ (I think that it is
also an ACS), there is also an o-ring at the drain end. You might want to
look at that also.

When the time comes, I think that I am going to use Andair selector and
gascolator as I believe they can use both fuels.

Regards,
Terry Dazey
Rebel 662

Sumner, Washington USA





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-----Original Message-----
From: mike.davis@dcsol.com
[mailto:mike.davis@dcsol.com]On Behalf Of
Alan Hepburn
Sent: Tuesday, May 03, 2005 6:06 PM
To: rebel-builders@dcsol.com
Subject: Re: gascolator/mo-gas


Terry:

Yes, it did occur to me that the O ring might be be
subject to the same
swelling. However, no sign of leakage there, and it
isn't sticking either.
The same goes for the drains on the fuel tanks. Seems
to me I've seen all
kinds of O rings in automaotive fuel systems, and I
can't remember ever
having seen a caveat on O rings, but if anybody knows
the full story, I'd
like to hear. I got a piece of 1/16" gasket material
from the local auto
parts store, and it seems to work well. It's a dark
grey rubber like
material, but not as soft as the original rubber seal
on the ACS gascolator.

Al





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I have used mogas with my 0320 most of the time, but did have a
problem early on with a couple of fuel tank drains. They started
to leak after a while, and the little O ring just seemed to eat
away, so that it wouldn't seal anymore. I ended up replacing them
with some small O rings I found at an automotive parts shop, and
no problem since. Funny thing, though, I had two others from the
same batch that I am still using on the bottom of the fuselage
without a problem. So I guess its possible some O rings just
aren't up to the job. Good news, is that it didn't take long to
find that out. My first clue actually was that they would spring
out further, and my doors would catch on them during opening. I
notched them out a bit more to clear, but shortly after they
started to leak, and I knew there was something odd going on. No
problems with my standard homebuilders gascolator.

Walter

-----Original Message-----
From: mike.davis@dcsol.com
[mailto:mike.davis@dcsol.com]On Behalf Of
Alan Hepburn
Sent: Tuesday, May 03, 2005 6:06 PM
To: rebel-builders@dcsol.com
Subject: Re: gascolator/mo-gas


Terry:

Yes, it did occur to me that the O ring might be be
subject to the same
swelling. However, no sign of leakage there, and it
isn't sticking either.
The same goes for the drains on the fuel tanks. Seems
to me I've seen all
kinds of O rings in automaotive fuel systems, and I
can't remember ever
having seen a caveat on O rings, but if anybody knows
the full story, I'd
like to hear. I got a piece of 1/16" gasket material
from the local auto
parts store, and it seems to work well. It's a dark
grey rubber like
material, but not as soft as the original rubber seal
on the ACS gascolator.

Al

Thanks to both Wlater and Mike. No problems with Proseal and mo-gas I

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So what's the alcohol going to do, Wayne? I have been assured by

Power that the engine and carb. are OK.

Al





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If you have any sloshing compound in your tanks it will soften and lift it.
Ticking time bomb that one day may just come lose in a large piece and
smother your finger strainers.

Alcohol will rot your fuel line from gascolator to the carb as well...but
then again car gas does a good job at that as well on some hose types. Not
such an issue in a gravity feed, but when running a pump it has been known
to suck the swelled internal hose shut when it has been softened by alcohol
or car gas.

FWIW, alcohol also doesn't produce as much BTU (read HP) as gasoline will.
Some of you probably remember Ron Newburgs "Alcohol Express" C150
taildragger. It was a DOG when running alcohol.

Wayne

----- Original Message -----
From: "Alan Hepburn" <ahepburn@renc.igs.net>
To: <rebel-builders@dcsol.com>
Sent: Thursday, May 05, 2005 9:19 PM
Subject: Re: Gascolator/Mo-gas

So what's the alcohol going to do, Wayne? I have been assured by

Aerosport

Power that the engine and carb. are OK.

Al





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