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clint_bazzill(at)hotmail.
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 Posted: Sat Mar 20, 2010 12:05 pm Post subject: Fuel situation |
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Murle Williams low fuel sensor is great. It sits above the header tank and holds a few oz of fuel. As soon as the 2 tanks become unported it responds very fast. It can be checked on preflight by having tanks shut off and drain a few oz of fuel. I tested my system a 912ULS engine over Half Moon Bay. I shut off both tanks and waited for light to come on. Engine running at 5000 rpm's with 24 inches MP. Altitude 3500 feet, pretty standard day. The engine quit after 21 minutes and a few seconds. I am using the standard header tank that came with my Kit.
Clint
[quote] From: lynnmatt(at)jps.net
Subject: Re: Kitfox-List: Re: Fuel situation
Date: Sat, 20 Mar 2010 15:47:13 -0400
To: kitfox-list(at)matronics.com
--> Kitfox-List message posted by: Lynn Matteson <lynnmatt(at)jps.net>
Clear vent line and glass (Purolator see-through) filters is how I
observe my fuel low at low-fuel situations. When I had the incident
that started this thread, I flew within about a mile of my home field
at about 4000 AGL, then lost altitude at the rate of about 2000 fpm,
turned into the pattern and landed...piece of cake.....all without
the low-fuel warning light coming on. It's just a matter of "knowing
thine own airplane" as AVweb's John Deakin (Pelican's Perch) might say.
Lynn Matteson
Kitfox IV Speedster, taildragger
Jabiru 2200, #2062, 881.5 hrs (since 3-27-2006)
Countdown to 1000 hrs~119 to go(126 days to go)
Sensenich 62"x46" Wood (summer)
Sensenich 55.5" x 46" Wood (winter)
Electroair direct-fire ignition system
Rotec TBI-40 injection
Status: flying (and learning)
On Mar 20, 2010, at 12:44 PM, Lowell Fitt wrote:
> --> Kitfox-List message posted by: "Lowell Fitt"
> <lcfitt(at)sbcglobal.net>
>
> This is one of the things I think of during the aircooled vs.
> liquid cooled debates. Sometimes simpler is not simpler. It
> reminds me of the times we dropped down the canyon to land at
> Orofino - Point the nose at the river and watch the airspeed. I
> have tested the fuel flow on a 30 min descent from 14,000 ft. to my
> pattern - 2000 ft. and if on the final six gallons each tank, the
> tanks will definitely unport and the engine will feed from the
> header tank. It is an easy task to level a bit and get things
> flowing again. This, of course, with the early aft feeding wing
> tanks. I like the clear vent lines and the glass fuel filters
> between the wing tanks and the header tankl I was able to watch
> all this unfold.
>
> Lowell
> ---
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Lynn Matteson
Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan
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| Posted: Sat Mar 20, 2010 1:58 pm Post subject: Fuel situation |
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Murle's low fuel sensor is the one I have. I haven't tried to empty
the header tank yet, but I guess I should, just to know exactly what
I've got. I have flown to a fuel stop that was about 6 minutes away
when the light came on, but not to the point of empty yet....that'll
give me something to do tomorrow, I guess.
I DO have a "check low fuel light" switch which only shows me that
the light is working, and as often as I check the actual operation of
the sensor system during actual flying, maybe it's time to change the
bulb. : )
Lynn Matteson
Kitfox IV Speedster, taildragger
Jabiru 2200, #2062, 881.5 hrs (since 3-27-2006)
Countdown to 1000 hrs~119 to go(126 days to go)
Sensenich 62"x46" Wood (summer)
Sensenich 55.5" x 46" Wood (winter)
Electroair direct-fire ignition system
Rotec TBI-40 injection
Status: flying (and learning)
do not archive
On Mar 20, 2010, at 4:04 PM, Clint Bazzill wrote:
[quote] Murle Williams low fuel sensor is great. It sits above the header
tank and holds a few oz of fuel. As soon as the 2 tanks become
unported it responds very fast. It can be checked on preflight by
having tanks shut off and drain a few oz of fuel. I tested my
system a 912ULS engine over Half Moon Bay. I shut off both tanks
and waited for light to come on. Engine running at 5000 rpm's with
24 inches MP. Altitude 3500 feet, pretty standard day. The engine
quit after 21 minutes and a few seconds. I am using the standard
header tank that came with my Kit.
Clint
> From: lynnmatt(at)jps.net
> Subject: Re: Re: Fuel situation
> Date: Sat, 20 Mar 2010 15:47:13 -0400
> To: kitfox-list(at)matronics.com
>
>
>
> Clear vent line and glass (Purolator see-through) filters is how I
> observe my fuel low at low-fuel situations. When I had the incident
> that started this thread, I flew within about a mile of my home
field
> at about 4000 AGL, then lost altitude at the rate of about 2000 fpm,
> turned into the pattern and landed...piece of cake.....all without
> the low-fuel warning light coming on. It's just a matter of "knowing
> thine own airplane" as AVweb's John Deakin (Pelican's Perch)
might say.
>
> Lynn Matteson
> Kitfox IV Speedster, taildragger
> Jabiru 2200, #2062, 881.5 hrs (since 3-27-2006)
> Countdown to 1000 hrs~119 to go(126 days to go)
> Sensenich 62"x46" Wood (summer)
> Sensenich 55.5" x 46" Wood (winter)
> Electroair direct-fire ignition system
> Rotec TBI-40 injection
> Status: flying (and learning)
>
>
>
>
>
>
> On Mar 20, 2010, at 12:44 PM, Lowell Fitt wrote:
>
> >
> > <lcfitt(at)sbcglobal.net>
> >
> > This is one of the things I think of during the aircooled vs.
> > liquid cooled debates. Sometimes simpler is not simpler. It
> > reminds me of the times we dropped down the canyon to land at
> > Orofino - Point the nose at the river and watch the airspeed. I
> > have tested the fuel flow on a 30 min descent from 14,000 ft.
to my
> > pattern - 2000 ft. and if on the final six gallons each tank, the
> > tanks will definitely unport and the engine will feed from the
> > header tank. It is an easy task to level a bit and get things
> > flowing again. This, of course, with the early aft feeding wing
> > tanks. I like the clear vent lines and the glass fuel filters
> > between the wing tanks and the header tankl I was able to watch
> > all this unfold.
> >
> > Lowell
> > ---
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kitfox-List |
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_________________
Lynn
Kitfox IV-Jabiru 2200
N369LM |
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Float Flyr
Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
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| Posted: Sat Mar 20, 2010 2:18 pm Post subject: Fuel situation |
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The process for certified engines is to time the descent and once a minute
raise the nose and use full power for around six to ten seconds. I don't see
why that wouldn't work for non certified engines.
Noel
--
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats |
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