REFLECTOR: fuel feed - my solutions

[Jim Sower]

<... pressure in the cabin while flying should be good most of a pound ...>
A *POUND?* Do you mean 1.0 psi? That's about 1/15th of an atmosphere 
which is about 2" Hg which is about 2000' on an altimeter and is the 
equivalent of about 230 KTS ram air pressure.

Do the math ... Jim S.

Wayne wrote:

> Thanks Al. Since I draw fuel from the nearly bottom of the sump and 
> with a couple of inches of fuel in the tanks I would have thought I 
> had about 15 inches. The pressure in the cabin while flying should be 
> good most of a pound. My alternate air for the airspeed seems to 
> confirm that cabin pressure is higher than static .
> Oh well if they don't work they don't weigh much.Next order from 
> McMaster carr perhaps I will order the 0 psi jobs.
> Wayne
>
>     ----- Original Message -----
>     *From:* Al Gietzen <mailto:ALVentures at cox.net>
>     *To:* 'Velocity Aircraft Owners and Builders list'
>     <mailto:reflector at tvbf.org>
>     *Sent:* Sunday, February 27, 2005 12:42 PM
>     *Subject:* RE: REFLECTOR: fuel feed - my solutions
>
>     I'm using two of the .5 jobs for an alternate air source in the
>     top of the loop before the vent line goes to the bottom of the
>     fuselage. If the fuel vent iced over I hope they will provide
>     cabin air to the fuel tanks. If the bird is upside down they
>     shouldn't allow fuel to leak inside the cabin.
>
>     Wayne;
>
>     0.5 psi is equivalent to about 15” head of fuel – which is more
>     than we have- so that check valve will never open.
>
>     Al
>
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