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RE: Europa-List: Fuel tank dimensions

Subject: RE: Europa-List: Fuel tank dimensions
From: craig bastin <craigb@onthenet.com.au>
Date: Thu, 19 Jun 2008 18:48:42
I am doing the same as you suggest Svein, and have allowed for it when
building the CM and the fuel system. Now that the top of the fusealage
is bonded on, the top of the seats is coming off and i am lifting it up
110mm, one reason is to fix the seat belt issue, the other is to
allow for a second tank sitting on top of the main tank, total volume is 28
litres, giving almost 100litres total, it fills from the return line
on the engine and is set up to be an independant reserve tank, so any fuel
in there has already been filtered by the main gascolator. and is then
run through a second gascolator between the reserve tank and the fuel
selector. When the reserve tank is full it overflows back into the main
tank. Tank is 1.5mm alloy wrapped in glass using vinyl ester resin, which is
what the glasair's are made from and they run wet wings with no lining
(according to a builder I visited)

craig
  -----Original Message-----
  From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com]On Behalf Of Sidsel & Svein
Johnsen
  Sent: Thursday, 19 June 2008 4:23 PM
  To: europa-list@matronics.com
  Subject: Re: Europa-List: Fuel tank dimensions


  Steve,

  Thank you very much for measuring the dimensions I asked for, plus some in
addition.  Can you explain where you measured the "inside saddle back" and
"inside saddle front"?

  Regarding the square box section extending into the baggage bay just over
the hump in the middle:  I am afraid that this would reduce the transverse
strength of the cockpit module (CM) too much.  Admittedly, much of the
forces from the wings' lift and drag are equalized between them by the cross
bar just aft of the CM, but I will not take any risk here.

  Cutting off the CM top and refitting it (at same level or higher) will not
compromise the aircrafts structural strength.  My plan - if I go ahead with
it - would be to lift the top at least 4 inches (probably more) to maximize
the volume, and make the head rests so that the shoulder belts will go back
---From my shoulders at an up angle of 35 degrees (ref. previous discussions
the spine compression and European VLA seat belt rules).

  Best regards,
  Svein


Checked by AVG.
9:08 PM


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