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Date: Mon, 11 Jul 2011 09:44:21 -0400
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From: Dave Saylor <dave.saylor.aircrafters@gmail.com>
Subject: Re: [LML] Re: Ferry Tanks
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Thanks John,

I think this would be a lot simpler if it weren't pressurized.  That
just adds a bunch of factors I'm hoping someone here has figured out.

Dave Saylor
AirCrafters
140 Aviation Way
Watsonville, CA 95076
831-722-9141 Shop
831-750-0284 Cell


On Sun, Jul 10, 2011 at 12:07 PM, John Barrett <jbarrett@carbinge.com> wrot=
e:
> Dave,
>
> I think you know Dan Newland? =C2=A0I recall he made some really great au=
x ferry tanks for someone a few years ago. =C2=A0Maybe he can tell you how =
they transferred fuel? =C2=A0He's off to Alaska on a 10 day cruise as of ye=
sterday, but maybe he'll chime in if he has some information that could be =
useful.
>
> John Barrett
>
> -----Original Message-----
> From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Da=
ve Saylor
> Sent: Saturday, July 09, 2011 8:35 AM
> To: lml@lancaironline.net
> Subject: [LML] Ferry Tanks
>
> We're getting ready to test a ferry tank system in a IV-P. =C2=A0It
> consists of a Turtle Tank bladder in the cabin, a valve, a 30GPH Facet
> pump, and plumbing to the right tank.
>
> The plan is to open the valve and just let the pressurization squeeze
> the fuel in to a partially-drained wing tank.
>
> The pump is to transfer fuel in the event of cabin de-pressurization.
>
> Some of the issues I'm concerned about are:
>
> Adequate transfer rate. =C2=A0Ideally it would be greater than the use ra=
te
> to reduce fuel management planning. =C2=A0All the plumbing is AN6 except
> for the tank inlet fitting and pump adapter fittings, which are AN6 to
> 1/8 NPT. =C2=A0I would have preferred 1/4 NPT.
>
> Pressurizing the wing tank. =C2=A0The tanks have the standard under-wing
> NACA vents without check valves.
>
> Changes in fuel pressure if the tank vents too slowly and therefore
> creates additional fuel pressure. =C2=A0I'm not sure how much change in
> head pressure the metering system can tolerate without affecting how
> the engine runs.
>
> I've removed the vent check valves--thank you Colyn!
>
> If anyone has experience or suggestions, I'm all ears.
>
> Thanks,
>
> Dave Saylor
> AirCrafters
> 140 Aviation Way
> Watsonville, CA 95076
> 831-722-9141=C2=A0Shop
> 831-750-0284=C2=A0Cell
>
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