Typical power settings during cruise and other phases of flight

"Mxsmanic" wrote in message
...

So what is the deal? Is it okay to run for several hours at full
throttle?

Depends on the plane.

The planes I've flown are less efficient at WOT, but get there faster.

WOT is gentler on the engine, but if it's only a sim, fuel burn and engine
wear don't matter.

"Steve Foley" wrote in message
...
"Mxsmanic" wrote in message
...

So what is the deal? Is it okay to run for several hours at full
throttle?

Depends on the plane.

The planes I've flown are less efficient at WOT, but get there faster.

WOT is gentler on the engine, but if it's only a sim, fuel burn and engine
wear don't matter.

OOPS! WOT is harder on the engine.

Steve Foley writes:

OOPS! WOT is harder on the engine.

See? Aren't you glad I'm only flying a sim? Otherwise you might have
my crash on your conscience.

--
Transpose mxsmanic and gmail to reach me by e-mail.

"Steve Foley" wrote in message
news:KmPRg.6595$Iq5.1919@trndny02...
The planes I've flown are less efficient at WOT, but get there faster.

WOT is gentler on the engine, but if it's only a sim, fuel burn and
engine
wear don't matter.

OOPS! WOT is harder on the engine.


OWT.

Matt Barrow wrote:
"Steve Foley" wrote in message
news:KmPRg.6595$Iq5.1919@trndny02...
The planes I've flown are less efficient at WOT, but get there faster.

WOT is gentler on the engine, but if it's only a sim, fuel burn and
engine
wear don't matter.
OOPS! WOT is harder on the engine.


OWT.




Actually, on many engines WOT is better than slightly reduced throttle
settings. WOT on the carbs provide a bit of enrichment for cooling.

Ron Natalie wrote:
Matt Barrow wrote:

"Steve Foley" wrote in message
news:KmPRg.6595$Iq5.1919@trndny02...

The planes I've flown are less efficient at WOT, but get there faster.

WOT is gentler on the engine, but if it's only a sim, fuel burn and
engine
wear don't matter.

OOPS! WOT is harder on the engine.


OWT.




Actually, on many engines WOT is better than slightly reduced throttle
settings. WOT on the carbs provide a bit of enrichment for cooling.

Hmmm, when at cruise, especially above 5K feet, I always bring the
throttle back to where the MP just moves down a bit. I am not wasting
fuel that is not needed and I have heard that the butterfly valve
slightly tilted helps in mixing. Don't know about the latter, but
certainly I have found better fuel burn numbers. In cruise, not sure you
have to worry about using fuel for cooling.

--

Regards, Ross
C-172F 180HP
KSWI

"Ron Natalie" wrote in message
m...
Matt Barrow wrote:
OOPS! WOT is harder on the engine.


OWT.

Actually, on many engines WOT is better than slightly reduced throttle
settings.

Quite...use the mixture to set power. WOTSOPLOP.
WOT on the carbs provide a bit of enrichment for cooling.

Actually, it creates turbulence in the induction that help the mixing for
better fuel distribution.

BTW, for those who are so adamant about not going LOP, our TNIO-550 just
passed the normal TBO of 1700 hours and a compression check ran
76/77/77/76/78/76. Zero evidence of lead fouling. My guess is we'll easily
get 2000 hours from this plant.

It's regularly run at 75-80%, 60-100LOP, and WOT.

I've been mulling the idea of trading up to a turbine twin as we either have
two aboard (in which case it's over kill to have a six passenger) or six or
seven (and I hate to cram in passengers, especially those who are 6-4 and
250 lbs...we have two of them).

So, what...a four place and a twin?


--
Matt
---------------------
Matthew W. Barrow
Site-Fill Homes, LLC.
Montrose, CO (MTJ)

Steve Foley wrote:

OOPS! WOT is harder on the engine.

Not according to Tornado Alley Turbo, the manufacturers of my
turbo-normalization system, it's not. In fact, running less than WOT
during cruise is discouraged by TATurbo:

http://www.taturbo.com/operation3.html

In the article, scroll down to the "Lean of Peak Cruise Operation of the
Turbonormalized (TN) IO-520/550" paragraph and read tips 3 and 4.


--
Peter

"Peter R." wrote in message
...
Steve Foley wrote:

OOPS! WOT is harder on the engine.

Not according to Tornado Alley Turbo, the manufacturers of my
turbo-normalization system, it's not. In fact, running less than WOT
during cruise is discouraged by TATurbo:

http://www.taturbo.com/operation3.html

In the article, scroll down to the "Lean of Peak Cruise Operation of the
Turbonormalized (TN) IO-520/550" paragraph and read tips 3 and 4.

That applies to Turbo'd engines, but this is more specific:

http://www.avweb.com/news/pelican/182085-1.html

(Note: This written was before Deakin added the TN to his Bo.)


--
Matt
---------------------
Matthew W. Barrow
Site-Fill Homes, LLC.
Montrose, CO (MTJ)

Matt Barrow wrote:

That applies to Turbo'd engines, but this is more specific:

The first line of the number 3 bullet point reads:

"Every internal combustion engine operates more efficiently with the
throttle wide open, than any other position."

My interpretation of "Every internal combustion engine" includes both turbo
and non-turbo piston engines.

--
Peter