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grahamsingleton(at)btinte
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 Posted: Tue Sep 08, 2009 1:32 am Post subject: Pipe clamps |
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Has anyone used sring clips for the fuel system yet, similar to the ones
used by Rotax for the cooling system?
The smell of fuel that sometimes occurs might be due to worm drive clips
loosening, either due to the pipe taking a permanent set, (shrinks under
pressure with heat) or the clips turning with vibration.
These look good but might not be small enough. Ian tells me its
important to have the right size for the pipe..
<http://www.zeroclips.com/emward_constant_tension.htm>
Graham
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loboloda(at)execulink.com
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| Posted: Tue Sep 08, 2009 10:12 am Post subject: Pipe clamps |
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Graham,
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I tried using auto hose clamps ( but not the spring clamps you
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mention ) in an attempt to trace the fuel smell.
There was no leakage at the connections so it did not make any
difference.
The smell always seemed like vented autogas, and as soon as I changed
the vent from the top of the fuselage and plumbed
it back into the neck of the tank, the smell disappeared.
Odd as it may seem, I think the smell came from vented gas running
down the fuselage and being sucked back inside via the
cut outs for the flaps and elevator
Dave
| Quote: | Has anyone used sring clips for the fuel system yet, similar to the
ones used by Rotax for the cooling system?
The smell of fuel that sometimes occurs might be due to worm drive
clips loosening, either due to the pipe taking a permanent set,
(shrinks under pressure with heat) or the clips turning with
vibration.
Graham
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rampil
Joined: 04 May 2007
Posts: 870
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| Posted: Thu Sep 10, 2009 10:09 am Post subject: Re: Pipe clamps |
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I do not believe the odor of mogas that has always been presenct in my Europa emanates from any of the connections of the hose to connector hardware. Rather some volatile components of the fuel seem to permeate through the hose itself. When I replaced the factory supplied Gates R7 spec hoses this year with Gates R9 hose, the smell of fuel was quite a bit reduced. R9 hose is fuel injection rated hose with a specified lower permeance to fuel (also, longer working life). I used bare hose aft of the tank selector switch, and stainless braided forward of the switch and throughout the engine compartment.
Ira
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Ira N224XS |
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paul.the.aviator(at)gmail
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| Posted: Thu Sep 10, 2009 2:55 pm Post subject: Pipe clamps |
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Hi Ira,
I can echo your findings. I replaced all of my rubber hoses with fuel
injection hose along with the recommended clamps and I noticed a drop
in the fuel smell. The other thing that helped was to replace the
rubber elbow at the fuel filler with an aluminum elbow.
Regards, Paul
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fklein(at)orcasonline.com
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| Posted: Thu Sep 10, 2009 5:18 pm Post subject: Pipe clamps |
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On Sep 10, 2009, at 3:51 PM, Paul McAllister wrote:
| Quote: | I replaced all of my rubber hoses with fuel injection hose along
with the recommended clamps and I noticed a drop in the fuel smell.
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Paul,
When you say, "recommended clamps", are you talking about the small
worm-drive SS clamps, or something else?
Thanks,
Fred
PS...regrettably, I will not be joining the gang at RR.
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paul.the.aviator(at)gmail
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| Posted: Thu Sep 10, 2009 6:20 pm Post subject: Pipe clamps |
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Hi Fred,
No, the clamps came from NAPA and they are specifically for fuel
injection hose. With that all said, if I had it all over (don't we
say that a lot when we get older) I would do my fuel system in all
aluminum, with twin gascolators and a few other things, but that's
another story all by its self.
Paul
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acrojim7534(at)YAHOO.COM
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| Posted: Fri Sep 11, 2009 4:42 am Post subject: Pipe clamps |
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Ira I also used the R9 Gates fuel injection hose in March this year to replace all of the old fuel line hose.
I had the same results, the fuel smell went away.
Jim Brown
914 monowheel.
--- On Thu, 9/10/09, rampil <ira.rampil(at)gmail.com> wrote:
| Quote: |
From: rampil <ira.rampil(at)gmail.com>
Subject: Re: Pipe clamps
To: europa-list(at)matronics.com
Date: Thursday, September 10, 2009, 6:09 PM
--> Europa-List message posted by: "rampil" <ira.rampil(at)gmail.com (ira.rampil(at)gmail.com)>
I do not believe the odor of mogas that has always been presenct in my Europa emanates from any of the connections of the hose to connector hardware. Rather some volatile components of the fuel seem to permeate through the hose itself. When I replaced the factory supplied Gates R7 spec hoses this year with Gates R9 hose, the smell of fuel was quite a bit reduced. R9 hose is fuel injection rated hose with a specified lower permeance to fuel (also, longer working life). I used bare hose aft of the tank selector switch, and stainless braided forward of the switch and throughout the engine compartment.
Ira
--------
Ira N224XS
Read this topic online here:
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rampil
Joined: 04 May 2007
Posts: 870
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