My engine has a good old fashioned carburetor – no GAMI injectors for me! When I’m flying in the Med I often have to pull the power back a tiny bit in the climb to keep CHT’s below 400 F. I tend to leave it on my usual hottest cylinder.
Next Annual I’ll replace the rubber cowling strips to see what that does.
Yes; this is normal. During a climb, the hottest cylinder may be different from the one during a descent, etc, due to the different airflow under the cowling. But this doesn’t matter because – assuming you have well enough balanced cylinders, possibly by installing a set of injectors from GAMI – you lean by maintaining the takeoff EGT during climb, and lean for peak EGT (or LOP) during cruise, or lean for best power (about 150F ROP) during cruise to reach the operating ceiling. It doesn’t matter which cylinder you pick as the reference.
Re a previous comment in this thread. My hottest cylinder varies on climb out and other factors. That’s why I have to toggle.
Do others experience the same thing?
I’ve put in a EDM 700 this year. I did look at more elaborate units, but for the additional price and panelspace they have little more to offer. I never flew with an engine monitor until now so I have little to compare, but I enjoy the useful info it brings to me.
The slight issue is that the EDM900
also needs one of these
It’s not really an upgrade. It’s a substantial panel rebuild.
I think the Insight G4 is currently the closest upgrade without panel hacking
Whether the user interface is any better is debatable. With just 2 buttons it is likely to be just as awful. But it does more…
Ditto. EDM700 goes out, EDM900 goes in.
Yes but with an 800 that’s used as fuel totaliser and OAT gauge you can’t avoid it. I don’t think I’ve ever managed to correctly input the exact fuel on board.
I upgraded my 2.25" EDM700 to the 3.125" version – here.
If there is a “better” instrument which goes into the same hole, I would seriously look at it, especially if it is shorter behind the panel. This came up here and the G4 was one option.
However, the reason I have not done anything about this is because the EDM700 is all that’s needed to set the two desired operating conditions: best economy (peak EGT) and best power (about 150F ROP). I never actually touch the controls on it, except when downloading the data into a laptop.
I just leave it on what is always the hottest cylinder and monitor that.
Likewise. Press the LH button until the dot sits under the hottest cylinder (mine is usually #6) and leave it there for the rest of the flight. This action stops the auto scanning process.
