birddog486
Well Known Member
I haven't seen a graph that appears the same as this one from my engine so I'm curious what others have to say about this.
The top chart is showing Fuel Flow along with the EGT's and the bottom has percent power with CHT.
I was running 21" at 2350RPM approx. 63 percent power on the dynon screen when I started leaning. FF on #4 peak EGT was about 7.8 and buy the time #1 reached peak, FF was 7.2
About the time cylinder number 1 hit 20LOP the engine started popping out the exhaust and I assume that's the reason for the climb in EGT's.
I kept leaning until the engine almost died then went back to full rich and got back to the airport so I could download the info.
This is a fairly new engine from Lycoming with one mag and a Pmag both timed to about 23BTDC.
The top chart is showing Fuel Flow along with the EGT's and the bottom has percent power with CHT.
I was running 21" at 2350RPM approx. 63 percent power on the dynon screen when I started leaning. FF on #4 peak EGT was about 7.8 and buy the time #1 reached peak, FF was 7.2
About the time cylinder number 1 hit 20LOP the engine started popping out the exhaust and I assume that's the reason for the climb in EGT's.
I kept leaning until the engine almost died then went back to full rich and got back to the airport so I could download the info.
This is a fairly new engine from Lycoming with one mag and a Pmag both timed to about 23BTDC.
Last edited: