Two CHT, two EGT - which to monitor

[Bryan Cotton]

I would recommend monitoring all 4. Aircraft Spruce sell changeover switch's.
On my 2.2 Jab, on the ground the two rear cylinders (cht) are the hottest, this changes over during flight, not by much but it does change.

Phil,
Can you post a Spruce link? I am not finding it.

[Corby202]

There's a few on this page Bryan. Depends how much you want to spend or which type suits the panel I guess.
https://www.aircraftspruce.com/search/s ... ch&x=0&y=0

[Bryan Cotton]

Thanks Phil! I did some looking at lunchtime today. I may try a couple of these, one for CHT and one for EGT.
https://www.newark.com/multicomp/1m41t1 ... t%20switch
Because the switch is not chromel-alumel, there will be a voltage when it switches materials, but then it will switch back and should generate the opposite voltage assuming a constant temperature at the switch.