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Date: Wed, 16 Feb 2005 21:12:01 -0500
Subject: Re: [FlyRotary] Re: Vapor Lock
From: Bulent Aliev <atlasyts@bellsouth.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Message-ID: <BE3967A1.582%atlasyts@bellsouth.net>
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Paul, my vote is against that Facet pump. If you are so stuck up on
aerobatics (with an airplane not designed for it), the sump tank will be
able to supply you with fuel for the brief negative G moments. Is your
lubrication system aerobatics compliant too? I don't think so. Upside down
time your engine will be running with no oil. Just my opinion?
Buly

On 2/16/05 8:25 PM, "Paul" <sqpilot@bellsouth.net> wrote:

> I ran my engine today with all the firesleeve installed and the new sump
> tank vent.  After 3 engine runs at WOT, the water temp hit 230 (and
> climbing), and the engine started acting just like it did the day of my
> forced landing.  Sputtering, erratic and finally just it quit, and would not
> restart. I turned on my inline Facet fuel pump.  It took 3 or 4 seconds,
> then the engine came back to life. I was able to taxi back to the hangar (I
> used about 1/2 throttle to get the aircraft rolling, then throttled back a
> bit to taxi).  My Facet pump is between the main tanks and the sump
> tank.(after the fuel selector valve). The EFI pumps are after the sump tank
> and before the fuel rail/regulator. The unused fuel from the regulator
> returns to the sump tank.  There is no way the engine would run without the
> Facet pump to push fresh gasoline into the sump tank, which was obviously
> filled with gas and bubbles after the thorough heat soaking it received.
> With the Facet pump still on, and taxiing under reduced power, the temps
> came down from 240 to 210 by the time I reached the hangar, and shut it
> down. My sump tank is vented with a 3/16" OD line on the top, which goes
> into the top of my left fuel tank. The line is opaque, and I can see fuel
> movement going through the new vent line when the Facet pump is turned on.
> Unfortunately, I can't tell if it is clear fuel or bubbles, or a mixture, as
> the line is opaque rather than clear, but I can definately see motion and
> tell it's direction of flow. Hope this more helpful than confusing.  Paul
> Conner
> 
> ----- Original Message -----
> From: "Jim Sower" <canarder@frontiernet.net>
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Sent: Wednesday, February 16, 2005 10:41 AM
> Subject: [FlyRotary] Re: Vapor Lock