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From: "Paul" <sqpilot@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-742268@logan.com>
Subject: Re: [FlyRotary] Re: Vapor Lock
Date: Wed, 16 Feb 2005 21:35:10 -0600
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Sorry, Bulent....the SQ2000 is marketed as an aerobatic airplane. (According 
to the literature I received from them). The wings are rib and spar, and 
covered with carbon fiber. Also according to the manufacturer...."The space 
age composite internal rib and spar structure of our wings and canard is 
much stronger". "Other canard kits use the old solid foam core method. With 
our internal assembly, the structural integrity of the parts is greatly 
increased as evidenced by the canard load testing of 15G's!"  It is 
suggested that an engine with a minimum of 180 horsepower be used for the 
aerobatic version.
      I have done many a roll and loop in my LongEZ. I have also been in 
Tracy's back seat when he did an aileron roll with his 13b powered RV 
aircraft.  According to the FAA, that definately qualifies as an aerobatic 
maneuver. I don't believe Tracy has an inverted fuel or oil system either. 
I have flown aerobatics in a Pitts S2, Long EZ, Citabria, etc.  There is no 
need to go negative in a loop or a roll. My LongEZ did some of the nicest 
aileron rolls ever. Loops are more of a figure 9 because it builds up speed 
rapidly any time the nose is pointed down, but it will do them OK. Not 
competition quality, but good enough to enjoy them.
     Regarding the Facet fuel pump, I am not sure yet. I do know that 
without it, I would never have been able to restart my engine today once the 
fuel system had become heat soaked. I tried for several minutes, until the 
engine was cranking slower as the battery slowly lost it's punch.  I turned 
on the Facet fuel pump, and was then able to restart the engine, as fresh 
fuel was forced into the sump tank, and the vapors etc were forced out of 
the top of the sump tank and into the main fuel tank.
     I think the jury is still out on this one.  Paul Conner

----- Original Message ----- 
From: "Bulent Aliev" <atlasyts@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Wednesday, February 16, 2005 8:12 PM
Subject: [FlyRotary] Re: Vapor Lock


> 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
>
>
>>>  Homepage:  http://www.flyrotary.com/
>>>  Archive:   http://lancaironline.net/lists/flyrotary/List.html
>
>
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