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stephen vestuti
Joined: 05 Jul 2011
Posts: 62
Location: Wales, UK
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 Posted: Sun Apr 22, 2012 9:19 am Post subject: Talking of Fuel Vent Lines... |
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Hi,
I intend to exit the filler neck vent under the fuselage, does it need to
face forward to airflow ( using 90 Deg. bend ), straight down or
turned aft ? Or does it make no difference ?
Steve.
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Ivor Phillips
Joined: 16 Jan 2006
Posts: 253
Location: London UK
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| Posted: Sun Apr 22, 2012 9:42 am Post subject: Talking of Fuel Vent Lines... |
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Steve
Probably overkill but i ran two breathers from the cobra both from the top,
the main one is in 3/8 metal from a large non return valve down the fuselage
side and exits just in front of the flap behind the wing, the second vent is run
in 1/4 aluminium down to the rear baggage bay and across the middle and through the floor to exit facing slightly rearwards, Nether pipe appear to vent fuel in
flight only on the ground if overfilled,
regards
Ivor Phillips
G-IVER
On 22 April 2012 18:19, stephen vestuti <s.vestuti(at)gmail.com (s.vestuti(at)gmail.com)> wrote:
| Quote: | --> Europa-List message posted by: "stephen vestuti" <s.vestuti(at)gmail.com (s.vestuti(at)gmail.com)>
Hi,
I intend to exit the filler neck vent under the fuselage, does it need to
face forward to airflow ( using 90 Deg. bend ), straight down or
turned aft ? Or does it make no difference ?
Steve.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=371498#371498
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dpark748(at)hotmail.co.uk
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| Posted: Sun Apr 22, 2012 11:00 am Post subject: Talking of Fuel Vent Lines... |
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I put mine under fuselage in a position out board of the flap hinge cover to protect from spray from mono!
Regards dave park. G-LDVO
Sent from my iPhone
On 22 Apr 2012, at 18:26, "stephen vestuti" <s.vestuti(at)gmail.com> wrote:
| Quote: |
Hi,
I intend to exit the filler neck vent under the fuselage, does it need to
face forward to airflow ( using 90 Deg. bend ), straight down or
turned aft ? Or does it make no difference ?
Steve.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=371498#371498
|
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Fred Klein
Joined: 26 Mar 2012
Posts: 503
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| Posted: Sun Apr 22, 2012 11:00 am Post subject: Talking of Fuel Vent Lines... |
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Steve & All,
I too have vented from the underside of the fuselage; I've used the
malleable SS tubing provided in the kit and, following the manual in
terms of the orientation, have bent it so the open end of the tubing
faces forward; I have also drilled the 2, 1/8" dia. holes at the rear-
facing side of the vent tubing called for in the manual.
I am still in the build process and cannot attest that this functions
as intended. I attach a photo.
Comments appreciated, especially if something seems amiss,
Fred
| Quote: |
>
Hi,
I intend to exit the filler neck vent under the fuselage, does it
need to
face forward to airflow ( using 90 Deg. bend ), straight down or
turned aft ? Or does it make no difference ?
|
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budyerly(at)msn.com
Guest
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| Posted: Sun Apr 22, 2012 4:51 pm Post subject: Talking of Fuel Vent Lines... |
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<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]--> Steve,
As Fred said, point it forward. I too drill holes in the aft end in case of a bug hit, dirt from muddy ground etc. I set mine glassed to the aft bulkhead on the trigear or on one of the outboard floor supports in the mono on the starboard side. It is not wise to place the vent on the centerline for contaminates from the nose or main wheel and be clear of the exhaust. 1/4 inch tube will work OK.
The object is that the vent will positively vent and the holes in the rear keep it from clogging or building too much pressure.
Regards,
Bud Yerly
Tech support.
[quote] ---
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grahamsingleton(at)btinte
Guest
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| Posted: Sun Apr 22, 2012 10:29 pm Post subject: Talking of Fuel Vent Lines... |
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There's one more reason for the holes in the rear of the vent tubes, they were originally specified by our leader Burt Rutan
to vent any rain water straight out again so that it would not freeze and block the vent.
Graham
From: Bud Yerly <budyerly(at)msn.com>
To: europa-list(at)matronics.com
Sent: Monday, 23 April 2012, 1:50
Subject: Re: Talking of Fuel Vent Lines...
Steve,
As Fred said, point it forward. I too drill holes in the aft end in case of a bug hit, dirt from muddy ground etc. I set mine glassed to the aft bulkhead on the trigear or on one of the outboard floor supports in the mono on the starboard side. It is not wise to place the vent on the centerline for contaminates from the nose or main wheel and be clear of the exhaust. 1/4 inch tube will work OK.
The object is that the vent will positively vent and the holes in the rear keep it from clogging or building too much pressure.
Regards,
Bud Yerly
Tech support.
[quote] ---
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stephen vestuti
Joined: 05 Jul 2011
Posts: 62
Location: Wales, UK
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| Posted: Mon Apr 23, 2012 9:40 am Post subject: Re: Talking of Fuel Vent Lines... |
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Thanks for the replies,
I'll going to go with the forward facing vent drilled at the back as this seems
to be what most of you are using with no probs.,
Thanks,
Steve.
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raimo.toivio(at)rwm.fi
Guest
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| Posted: Thu Apr 26, 2012 9:45 am Post subject: Talking of Fuel Vent Lines... |
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Bud and others,
one more thing: what would be a good way to retrofit a more fuctional fuel breathing system?
I have a Mono and I built its fuel breathing system as per a building manual. I have no difficulties to fill it up (some Mono owners need to lift the tail to get air out before filling totally full). But, when filling very last few litres, I have to do it very slowly. And listen carefully that sound like an elephant is sleeping when the system is breathing. Otherwise it will spill /burble some fuel out and that is uncomfortable and maybe a risk for blames in some circumstances.
Cheers, Raimo
OH-XRT
Finland
From: Bud Yerly <budyerly(at)msn.com>
To: europa-list(at)matronics.com
Sent: Monday, 23 April 2012, 1:50
Subject: Re: Europa-List: Talking of Fuel Vent Lines...
Steve,
As Fred said, point it forward. I too drill holes in the aft end in case of a bug hit, dirt from muddy ground etc. I set mine glassed to the aft bulkhead on the trigear or on one of the outboard floor supports in the mono on the starboard side. It is not wise to place the vent on the centerline for contaminates from the nose or main wheel and be clear of the exhaust. 1/4 inch tube will work OK.
The object is that the vent will positively vent and the holes in the rear keep it from clogging or building too much pressure.
Regards,
Bud Yerly
Tech support.
[quote] ---
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http://www.matronics.com/Navigator?Europa-List |
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