Engine trouble

[patthepilot]

yea, just recently TCM has started saying LOP is ok. before they were all over the place. i join you on the floor all the time talking about LOP. hearing other pilots say-i heard the engine explode. love it.

 

[roundout]

My personal favorite: "don't run lean of peak, you'll burn up your valves!!1!"


Stupid. Tcm approve up to 150 lean in new mooney airplanes, other planes I don't know about. The power settings are for 50 lean but it says you can go up to 150 if it runs smooth.

Since we're discussing IO 550s, anybody know why they like to quit if you exit the runway with a right turn? Mind boggling.

 

[shdw]

Since we're discussing IO 550s, anybody know why they like to quit if you exit the runway with a right turn? Mind boggling.

Psychological disorder just like that lady in london who can only turn left and plans her day on left hand turns.

 

[deadstick]

My personal favorite: "don't run lean of peak, you'll burn up your valves!!1!"


Stupid. Tcm approve up to 150 lean in new mooney airplanes, other planes I don't know about. The power settings are for 50 lean but it says you can go up to 150 if it runs smooth.

Since we're discussing IO 550s, anybody know why they like to quit if you exit the runway with a right turn? Mind boggling.

In some of the BE35's, I think there is a letter "out there" about making turn too quickly because of no baffling in the tank. I had it happen making a RH turn with the fuel on the LH tank: unport the fuel line and suck in a bunch of air. Imagine the fuel acting like the ball going to the outside of the turn.

 

[roundout]

That is an interesting idea but I'm going to say it's something else. If you switch on the low boost pump before you turn or as it's sputtering and dying, it will stay alive. If the pump was only sucking air, this wouldn't be the case.

 

[ppragman]

My personal favorite: "don't run lean of peak, you'll burn up your valves!!1!"


Stupid. Tcm approve up to 150 lean in new mooney airplanes, other planes I don't know about. The power settings are for 50 lean but it says you can go up to 150 if it runs smooth.

Since we're discussing IO 550s, anybody know why they like to quit if you exit the runway with a right turn? Mind boggling.

At my old gig, a coworker was running LOP on every flight. Typical leg time was 30min. The mechanic came to him and said, "hey man, you're burning valves, keep it at the top of the green arc," the guy does this, the burnt valves go away. This was an IO-520F. I do what my mechanic says and what my boss says, and if the mechanic of 20 years working on essentially the same airplanes says one technique is better than the other, I listen. Running super lean to "save gas" is stepping over a quarter to pick up a penny if your operation is one that LOP operations aren't going to be good.

LOP may work great in some cases, but most airplanes don't have the instrumentation to maintain constant EGTs and CHTs on all of the cylinders.

 

[minitour]

I think that's a great point too. If the boss-man wants you 50 LOP, you fly 50 LOP. If he wants you 100 ROP, you fly 100 ROP. It's his mx bill, his gas bill, not yours. Safety trumps, of course...but in normal ops, it's "yes sir".

My boss likes me to climb at best rate all the way to cruise altitude. While I'd get my pax to the destination 10 minutes quicker climbing my way, I ain't the one writing pay checks.

-mini

 

[roundout]

LOP may work great in some cases, but most airplanes don't have the instrumentation to maintain constant EGTs and CHTs on all of the cylinders.

Absolutely. You have to have the proper equipment to do the job.

If the boss-man wants you 50 LOP, you fly 50 LOP. If he wants you 100 ROP, you fly 100 ROP. It's his mx bill, his gas bill, not yours. Safety trumps, of course...but in normal ops, it's "yes sir".

Absolutely. If the chief bill-payer tells you to fly "some" way, as long as it's safe and legal, you do it. Period.