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majurpain
PostPosted: Tue Dec 17, 2013 9:13 pm 
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Joined: Sun Jul 08, 2012 12:25 pm
Posts: 43
Location: U42 Salt Lake City, utah
Just noticed when logging my latest oil change that I've cracked the 100 hour mark in 589LW. It's been a blast, what an awesome plane and great community. Thanks for welcoming me!

One fuel economy note I never posted anywhere else here- with the PMag replacing the right mag in the O-360, I'm burning about a gallon (and change) an hour less than Fraser and Cubes with their O-320's. That's in formation, repeated over several fuel stops. Some of that is no doubt due to excellent pilot technique, but give Lee credit for buildi.ng a really slick Thorp, too.
Still, for a O-360 to burn significantly less than O-320's is quite a testament to the electronic ignition...

-Homey


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James Grahn
PostPosted: Tue Dec 17, 2013 10:20 pm 
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Well, actually Homey, it's pretty common for an O360 to burn less along side of an O320. Spanky does it every week. The 360 is not working as hard for the same speed.
Cubes


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dan
PostPosted: Tue Dec 17, 2013 10:40 pm 
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That electronic makes it smooth don't it Homey, it is very efficient, what is your fuel burn at cruise speed at 6500 ft or so? Dan


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jrevens
PostPosted: Thu Dec 19, 2013 1:28 am 
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James Grahn wrote:
Well, actually Homey, it's pretty common for an O360 to burn less along side of an O320. Spanky does it every week. The 360 is not working as hard for the same speed.
Cubes


The O-360s have the best specific fuel consumption of all the 4 cylinder Lycomings. Like Dan, I'm wondering about fuel burn also... do you have any numbers for your averages when cruising at 7500 MSL (your normal TAS & GPH)? I have an O-320-D2A (160 hp) & average 6.7 to 7.0 GPH @ 180 MPH TAS.

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John Evens
Arvada, Colorado

T-18 N71JE (sold)
Kitfox 7 SS N27JE


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Fraser MacPhee
PostPosted: Thu Dec 19, 2013 1:07 pm 
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When lead is flying the dance of the sugar plum fairy, "TWO" is gonna burn more fuel.....

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Fraser MacPhee
N926WM
Serial #279-1
Draper, UT


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James Grahn
PostPosted: Thu Dec 19, 2013 5:04 pm 
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Very true, Frase.. I have busted a guy in flight lead upgrade for burning too much of his wingman's fuel.
Cubes


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majurpain
PostPosted: Mon Dec 23, 2013 7:47 pm 
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Joined: Sun Jul 08, 2012 12:25 pm
Posts: 43
Location: U42 Salt Lake City, utah
I need to do some better data logging to get accurate numbers. Also, absent headwinds, I'm flying xc as high as practical, usually 12500 to 15500' so don't know much about the altitudes you asked about. At high altitudes, I'm typically indicating just under 7 gph at 2350RPM and the throttle off the firewall just enough to show about a .1" MP drop from peak, leaned out just as much as I can lean without running rough. It varies a bit flight to flight, right around 7 GPH. Indicated burn. Haven't check groundspeeds on a course (both ways for wind...). Fast bird, though (thanks again, Lee...)


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Pacer 20
PostPosted: Mon Dec 23, 2013 10:29 pm 
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Joined: Sat Feb 09, 2013 11:34 am
Posts: 233
Location: Montreal, Canada
WOW.... ;D ;D
100 hrs in your Thorp!!! BRAVO!!!

One day I have the same post......Are you the original builder?
For this moment I'm in the middle of no where, just parts everywhere in the hangar :(
Okay, Okay 100 hrs in my Piper Pacer :) :)

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Thierry
French Canadian T-18
C-FPVE #091


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