Bob,

I have a 1/4" vent in my header (per the plans).  It allows fuel flows in
excess of 20 GPH.  I suppose it's possible to think the total volume of air
is not entirely through the vent tube.  The balance could of course be
coming from the wing tanks through the transfer pumps.  I don't think this
happens because there is no evidence of fuel flow or bubbles in the sight
tubes.  So there!  I on board with Ian on this one.  We've thought about it
and his ruling remains.

Go Build!

Larry Henney
N360LH

PS:  A man could go completely bald with all the head scratching from
building a Lancair.


-----Original Message-----
From: Lorn H Olsen [mailto:lorn@dynacomm.us]
Sent: Friday, November 28, 2008 2:25 PM
To: lml@lancaironline.net
Subject: Re: 360 Fuel Vent

Robert,

Any hole in your airplane should be as small as possible in order to get
it's job done.

Lorn

> From: "Robert Mitchell" <rmitch1@hughes.net>
> Date: November 26, 2008 7:01:38 PM GMT-05:00
>
> I was thinking about putting 3/8 vent line in my header tank (under
> construction) but the opposite question is --- would it over pressure
> the tank?
> Bob Mitchell
> Lancair 320 sloooo build kit
--
Lorn H. 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst DynaComm, Corp.,
248-345-0500, mailto:lorn@dynacomm.us LNC2, FB90/92, O-320-D1F, 1,497 hrs,
N31161, Y47, SE Michigan