Yeah. I get my Lyc IO360 with fi and flow balanced cylinders (just

over

200hp on dyno-210+) down to 8.5 gph (2 flow meters installed) 25

degrees

rich of first peak at full throttle with no roughness all the time

when

I am below 75%, which is the majority of the time at altitude. Very
efficient engine....which is one reason why the Lyc IO and O 360 are

so

popular. It is a good engine for LOP operation a cruise altitudes

and

whenever your hp is down (like descents, high altitude anywhere). It

is

a hard engine to beat-usually has a minimal number of problems as

well.

It should be our target to shoot for. The benchmark, so to speak.
Marc Wiese

I don't believe it Marc. 75% of 210HP is  157.5 HP at 8.5 gal per
hour or 51.85 pounds per hour is a BSFC of 0.329.   You must be

joking.

Which liar/incompetent ran the dyno? Who needs diesel engines?

Next thing you know these Air Craft engines will start to fill the

tanks

with fuel as you fly :-)>

Altitude, temp, and rpm is important here as that will decrease the mp
and the hp output for a given airspeed.

It is not going to get you 0.329 under any conditions. Even on the moon.

I always beat the book as I usually am running higher mp due to ram air
and filter, and lower fuel flow due to matched injectors and flow
balancing, as well as good all cylinder egt/cht gauges.
If you have the engine diagram for the Lyc IO360A1B6 engine, that would
be a help. Seems I misplaced my Lyc engine operation manual. That would
have the correct curves for a stock engine.
It is very difficult to get above 75% in cruise at any altitude at any
temp due to 2500 prop rpm max limitations, so lop operation is a
reality.
Also, keep in mind that it is only groundspeed that makes you cover
distance, not airspeed, so go to an altitude that takes advantage of
winds. Your mpg goes up!
[Marc Wiese]

The AirCraft Rotary Engine NewsLetter.              Powered by Linux.
ACRE NL web site.
http://home.earthlink.net/~rotaryeng/            http://www.linux.org