Cylinder head temperature

[ET43]

Harvey, 180C = 356F, about as hot as I would wish to push an engine. Most of the microlight boys say when you see a reading of 360 to 380, back off the throttle. I do not know what the thinner air does to the temperature if you see what I mean. What thermocouples, and whose CHT gauge are you using please, as that is next on the list for the trike. I think I'm right in saying that grey colour on the plugs is the norm with unleaded fuel, and that you will not get a black exhaust tail pipe. Thanks for the info. ET43

 

[harvey]

Hello ET43, senders are CP001,ring type, it is 19.6mm dia so it fits plug recess with careful bend on the tail where the t/c is attached. Gauge is a CH002, dual Round gauge, 2"dia, does 2 cyls. There are others . Supplier was Skydrive, website www.skydrive.co.uk, tel 01926 612188. They are Rotax dealers. Rob is tech guy, Very helpful. Its a type J t/c, and no power supply is needed.
This was started off by idle curiosity as to CHT, which resulted in finding 210 deg C on a lashup indicator, after 1/2 throttle climb of Glenshee, 700ft rise in 1 mile. Bit hot...

 

[serious C]

Hello,
I have a CHT-Gauge that comes from an old aviation engine(Lycoming or Continental)The washer goes under the spark plug and need no extra power supply!I've seen it sometimes on e-bay.
I can't tell you anything about the temperatures expected because right now I have an Egt-Gauge fitted,to prevent my Comet on running too lean.http://www.vincentownersclub.co.uk/photos/showphoto.php?photo=3474&title=egt-gauge&cat=585.View attachment 700