Extended full-power in small pistons

The POH for a number of small piston aircraft warn that high power and prop
settings should not be used for extended periods. What counts as an extended
period, and what happens to the engine if these recommended (or mandatory)
limits are exceeded?

On Jan 1, 2:41*pm, Mxsmanic wrote:
The POH for a number of small piston aircraft warn that high power and prop
settings should not be used for extended periods. *What counts as an extended
period, and what happens to the engine if these recommended (or mandatory)
limits are exceeded?

On a sim, nothing.

"Mxsmanic" wrote in message
...
The POH for a number of small piston aircraft warn that high power and
prop
settings should not be used for extended periods. What counts as an
extended
period, and what happens to the engine if these recommended (or mandatory)
limits are exceeded?

Anything over five minutes will cause the engine to explode.

Anything over five minutes will cause the engine to explode.

Or, in some cases, like in Bonanzas, Barons, and R182's, the prop can
suddenly depart the aircraft. It is a well established problem from running
at max power for extended periods of time. The actual time it takes for this
to occur depends on a number of conditions, such as ambient temperature,
CHT, age and hours on the engine and oil, etc.

"Clark" wrote in message
...

But that's ok because the ejection seat fires automatically...

My back hurts!

Peter :-(

On Jan 1, 4:41*pm, Mxsmanic wrote:
The POH for a number of small piston aircraft warn that high power and prop
settings should not be used for extended periods. *What counts as an extended
period, and what happens to the engine if these recommended (or mandatory)
limits are exceeded?

I got a good chuckle out of all the other answers. You guys are so
bad. g

Here's my crack at answering this question. To operate the engine
above and beyond it's design will result in premature engine wear and
tear. Also at or above the design parameters, the engine is not
getting adequate lubrication and/or cooling, again resulting in
premature wear and tear or possibly even cause engine seizure. This
wear and tear will also shorten the Time Between Overhaul TBO.

Monk

Mxsmanic wrote:
The POH for a number of small piston aircraft warn that high power and prop
settings should not be used for extended periods. What counts as an extended
period,

Depends; Is PIC renter, owner, or employee?

T

Monk writes:

Here's my crack at answering this question. To operate the engine
above and beyond it's design will result in premature engine wear and
tear. Also at or above the design parameters, the engine is not
getting adequate lubrication and/or cooling, again resulting in
premature wear and tear or possibly even cause engine seizure. This
wear and tear will also shorten the Time Between Overhaul TBO.

Okay, thanks. The last POH I looked at (Bonanza or Baron, not sure which)
said that it was "not recommended," which sounded gentler than "forbidden,"
and implied that it just wasn't a good idea, but wouldn't necessarily cause a
catastrophic failure of the engine.

The POH also seems to imply that operating with full throttle at less than
maximum RPM is okay, and so is operating with maximum RPM but less than full
throttle. I think it also says something about not being at maximum EGT for
too long.

I was mainly worried that exceeding some mysterious limit would cause an
engine failure in flight.

Anthony, your response again demonstrates your fundamental ignorance about
flying. Since when do throttle and RPM control EGT? What does EGT have to do
with engine performance and longevity? Since when do full throttle and RPM
produce maximum EGT?

It's a good thing you actually don't fly. The limitations in the POH
obviously would not make sense to you, since you don't have a grasp of the
fundamentals of engine operation.

On Jan 2, 10:41*am, Mxsmanic wrote:
The POH for a number of small piston aircraft warn that high power and prop
settings should not be used for extended periods. *What counts as an extended
period, and what happens to the engine if these recommended (or mandatory)
limits are exceeded?

TBF goes down.

Cheers