Thorp Air Command - T18.net

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

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

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

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.

_________________
John Evens
Arvada, Colorado
T-18 N71JE (sold)
Kitfox 7 SS N27JE

When lead is flying the dance of the sugar plum fairy, "TWO" is gonna burn more fuel.....

_________________
Fraser MacPhee
N926WM
Serial #279-1
Angel Fire, NM (KAXX)

Very true, Frase.. I have busted a guy in flight lead upgrade for burning too much of his wingman's fuel.
Cubes

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...)

WOW....
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

_________________
Thierry
French Canadian T-18
C-FPVE #091