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From: "Paul" <sqpilot@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-726202@logan.com>
Subject: Re: [FlyRotary] Re: Vapor lock in sump/header tank.
Date: Sat, 12 Feb 2005 13:22:02 -0600
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OK....Another vote for venting the sump tank. I am convinced.  Paul 
needavent Conner

----- Original Message ----- 
From: "Marvin Kaye" <marv@lancaironline.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Saturday, February 12, 2005 9:57 AM
Subject: [FlyRotary] Re: Vapor lock in sump/header tank.


>I think a part of the problem with this discussion is terminology... a 
>header tank, by definition, is at the "head", or top of the fuel system. 
>It is above the level of the mains and needs to have its fuel pumped into 
>it from them. An auxiliary tank at or below the level of the mains that 
>receives its fuel from them by gravity should be called a sump tank, or by 
>some other name that differentiates it from a header and explains that it 
>functions more or less as a sump for them.  The sump tank needs to be 
>vented to (or through) the mains as its ultimate level is determined by its 
>relation to them, as opposed to the header which must have fuel lifted to 
>it from the mains and can be treated as a free standing 3rd fuel tank. 
>Just my 2c.
>
>  <Marv>
>
>>>  Homepage:  http://www.flyrotary.com/
>>>  Archive:   http://lancaironline.net/lists/flyrotary/List.html
>
>
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