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#31
February 24th 08, 01:58 PM
posted to rec.aviation.owning
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New (old) bird
Do I? Hell, no! I cruise at 140 knots, at 15 gph.
Lean, grasshopper, lean! Snort! That *is* leaned. At take-off, we'll be around 24+ gph... :-) I read about these LSAs flying around at 120 knots on 3 gph, and start salivating. -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destination" 
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#32
February 24th 08, 08:50 PM
posted to rec.aviation.owning
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New (old) bird
When operating properly in cruise lean of peak 14.9 times fuel flow
equals horsepower. So pick your desired percent HP and set the fuel flow accordingly. When ROP, HP is proportional to AIR (controlled by RPM and MP), and changing the FF doesn't matter much. Jay Honeck wrote: Do I? Hell, no! I cruise at 140 knots, at 15 gph. Lean, grasshopper, lean! Snort! That *is* leaned. At take-off, we'll be around 24+ gph... :-) I read about these LSAs flying around at 120 knots on 3 gph, and start salivating.
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#33
February 25th 08, 01:21 AM
posted to rec.aviation.owning
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New (old) bird
On 2008-02-24, Jay Honeck wrote:
I read about these LSAs flying around at 120 knots on 3 gph, and start salivating. Yeah. The Tecnam salesman I was flying the Bravo with was sure to point out that it burned about 3.5 GPH at 4600 RPM and 105 KIAS. (I haven't seen anyone claim 3 GPH for 120, but it won't be long before someone does, I'm sure.) Even 5.5 GPH for 115 KIAS in the Zodiac is a nice number... -- Jay Maynard, K5ZC http://www.conmicro.com http://jmaynard.livejournal.com http://www.tronguy.net http://www.hercules-390.org (Yes, that's me!) Buy Hercules stuff at http://www.cafepress.com/hercules-390
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#34
February 25th 08, 02:34 AM
posted to rec.aviation.owning
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New (old) bird
When operating properly in cruise lean of peak 14.9 times fuel flow equals
horsepower. So pick your desired percent HP and set the fuel flow accordingly. When ROP, HP is proportional to AIR (controlled by RPM and MP), and changing the FF doesn't matter much. We flew to Stevens Point, WI today, to visit Jim & Tami Burns. On the way home, we cruised at 6500 feet, where we were able to maintain 21 inches of manifold pressure. RPMs were set to 2300, and when leaned back our fuel flow was 12.4 gph. Probably coulda got it lower, but our EGTs were nice and even, less than 90 degrees apart, and everything was running nice and smooth... -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destination"
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#35
February 27th 08, 09:38 AM
posted to rec.aviation.owning
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New (old) bird
On Feb 11, 12:53*pm, Ray Andraka wrote:
Congrats, You'll soon grow into it and will love it! *If you do lose the * engine, look straight down for a landing spot, because that is about as far as you'll get (actually about a 45 degree down cone is reachable). *It glides about like a brick. *Don't even try to make it back to the runway unless you have at least 1200 feet and have practiced it.
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#36
March 9th 08, 01:11 PM
posted to rec.aviation.owning
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New (old) bird
What fuel flow/EGTs do you get when you run high MP/low RPM?
Define "high MP" and "Low RPM", please. -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destination"
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#37
March 9th 08, 02:32 PM
posted to rec.aviation.owning
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New (old) bird
Probably something like 24" and 2200 rpm (or some other "oversquare"
combination, which contrary to OWT may be allowed as per the POH), instead of 22" and 2400 rpm. "Jay Honeck" wrote in message news:OlRAj.68149$yE1.27190@attbi_s21... What fuel flow/EGTs do you get when you run high MP/low RPM? Define "high MP" and "Low RPM", please. -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destination"
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#38
March 9th 08, 05:15 PM
posted to rec.aviation.owning
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New (old) bird
How do you get 24" MP at 6500 MSL?
Jim -- "If you think you can, or think you can't, you're right." --Henry Ford "Steven Barnes" wrote in message et... Probably something like 24" and 2200 rpm (or some other "oversquare" combination, which contrary to OWT may be allowed as per the POH), instead of 22" and 2400 rpm. "Jay Honeck" wrote in message news:OlRAj.68149$yE1.27190@attbi_s21... What fuel flow/EGTs do you get when you run high MP/low RPM? Define "high MP" and "Low RPM", please. -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destination"
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#39
March 9th 08, 06:01 PM
posted to rec.aviation.owning
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New (old) bird
"RST Engineering" wrote in message ... How do you get 24" MP at 6500 MSL? Jim Why, you hook up a tube to your intake, and continuously blow into it, of course. I thought everyone knew that! ;-)) -- Jim in NC
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#40
March 10th 08, 01:20 AM
posted to rec.aviation.owning
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New (old) bird
Point.
I was just giving an example of "oversquare". My Six POH tops out 6K at 23.7 inches @ 2300 RPM for 75% power. I haven't tried it yet. "RST Engineering" wrote in message ... How do you get 24" MP at 6500 MSL? Jim -- "If you think you can, or think you can't, you're right." --Henry Ford "Steven Barnes" wrote in message et... Probably something like 24" and 2200 rpm (or some other "oversquare" combination, which contrary to OWT may be allowed as per the POH), instead of 22" and 2400 rpm. "Jay Honeck" wrote in message news:OlRAj.68149$yE1.27190@attbi_s21... What fuel flow/EGTs do you get when you run high MP/low RPM? Define "high MP" and "Low RPM", please. -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destination"
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