John deakin engine management systems

I agree that these articles are most pertinent to operators of large fuel injected engines such as my IO550 Conti but there are loads of little gems for everyone in there.

He does mention carburettor engines but not much. And, before a lot of this makes sense you need GAMI injectors and at least an EDM 700.

John deakin engine management systems

Here are a few of the little gems I made a note of:

Don't bother cycling the prop on a constant speed prop on run up. Just look for red line RPM as you start your roll full throttle.

LOP for HP multiply fuel flow in GPH by 14.9.

This does not work ROP. 14.9 is the figure for 8.5 compression ratio.

1250 - 1320 EGT on take off should be correct.

John deakin engine management systems mystic ct

If higher the max fuel flow is too low. Have it reset.

Outside the Red Box

At 65% power, use richer than 100 ROP, or leaner than peak EGT.
At 70%, use richer than 125ºF ROP, or leaner than 25ºF LOP.
At 75%, use richer than 180ºF ROP, or leaner than 40ºF LOP.
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