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Ed Cesnalis

Light Sport 10,000' Altitude restriction with exception

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22 minutes ago, Skunkworks85 said:

For EGT:

Richer = Hotter,  Leaner = Cooler

Some planes get flown ROP (rich of peak) and some LOP (lean of peak).  When adjusting mixture the direction reverses as you go past peak or come back prior to peak.

Your equations are only true when you are already LOP.

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On 5/29/2019 at 5:07 PM, Ed Cesnalis said:

Some planes get flown ROP (rich of peak) and some LOP (lean of peak).  When adjusting mixture the direction reverses as you go past peak or come back prior to peak.

Your equations are only true when you are already LOP.

That was my understanding.  Leaning makes EGT go up until you hit peak EGT, *then* it starts to cool down.  You don’t want to dwell near the peak, so you either richen the mix away from the peak and run Rich of Peak (ROP), or lean farther and run Lean of Peak (LOP).

LOP usually doesn’t work well on carbureted engines, because inconsistent fuel distribution between cylinders allows some cylinders to run leaner than others and can cause the engine to stumble or quit.

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