Hi Richard,
I am not sure I understand what you intend to do regarding sealing. The
large diameter pitch control tube passes through the area you are talking
about and would require some form of bellows to seal and allow movement- Or
have I misunderstood?
Regards
Brian
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Richard
Collings
Sent: 14 May 2015 20:21
Subject: Re: Europa-List: Smell of petrol in the cocpit just after takeoff
--> <rcollings@talktalk.net>
Hi Gilles & Brian
Watching your email thread I would like to add my 2 pennies, I was aware
that there was a problem with exhaust gasses entering the cabin through the
flap slots on each side of the fuselage so I made a bulk head from the rear
of the baggage bay floor to the floor of the aircraft [in 2 pieces] I am
going to seal them air tight with foam rubber so that under the baggage bay
is air tight to the cabin.
I have had only one problem associated with engine smells from the start and
that is a smell of fuel when I switch on the electric fuel pump. Fuel
pressure remain the same with fuel pump no or off. No leaks found so far its
very strange.
Regards
Richard
G-CGZV Tri-gear 912ul 115hrs
-----Original Message-----
From: Brian Davies
Sent: Wednesday, May 13, 2015 10:46 AM
Subject: RE: Europa-List: Smell of petrol in the cocpit just after takeoff
--> <brian.davies@clara.co.uk>
Hi Gilles,
I think leather bellows is probably the way to go. I have been chasing
higher than normal CO levels on my aircraft, hence the research into
airflows from the engine compartment. I have been looking at bellows around
the pitch tube behind the baggage bay to close off the airflow through the
flap slots and forward through the tunnel. I am ,however, struggling to
understand why I should have a problem on my aircraft when others are not
reporting problems.
The trouble with measuring CO with a digital sensor is that once you know
the reading you feel you should do something about it, even if it is within
limits. I am getting 11 - 20 ppm in cruise and up to 35ppm on approach with
the flaps down, with a normal limit of 50ppm for GA aircraft but zero would
be better!
Regards
Brian
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of GTH
Sent: 12 May 2015 23:31
Subject: Re: Europa-List: Smell of petrol in the cocpit just after takeoff
Brian,
Thank you for the information.
> I know it is good aero practice to have a gas tight FWL but on the
> Europa, with rudder cables passing through it, it is actually
> impossible
to achieve.
I would have thought that it could be easily addressed with leather bellows,
like on vintage aircraft.
> Also the external airflow from the engine area can attach to the lower
> fuselage and enter the flap slots.
This one beats me, but when there is a will there is a way...
Best regards,
Gilles
http://contrails.free.fr
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