ORIGINAL: Tired Old Man
If you limit any of them to 155C you would do well.
Here's the graph of cylinder head temperature from my GP Ultimate w/DA-50r gas engine;
Verticle bars are when flight data recorder unit was started each time.
Temp rise just before 3rd verticle bar is just before take-off where foam came out from under flight data recorder and I shut it down.
After the 3rd verticle bar is the actual flight. Highest temp (184.8F) was achieved during one of the sustained hovers.
At approximately 8min - 40sec the rapid temp drop occurs as the sensor came loose.