RE: Mini Temperature Guns! The "Hottest" Thing
I got a radio shack one (looks like the DuraTrax one in the tower flyer) and it works great on RC cars. My T-Maxx they recommend a temp of 230-250 and anything over 300 yer in trouble. I's great for tuning the engine and richening when it's too hot.
When I'm bashin my maxx it's the one tool I can't be without.
I don't think airplanes are as sensitive to heat as the prop usually supplies enough air over the head to keep it cool.