Engine temp
 

I've been doing basic hover manuevers. About 6 tanks thru her. My question is what temperature should the engine be after running out of fuel. I recently bought a IR temp gauge to make sure carb settings are correct and engine is not overheating. My engine is a TT39.
You can email your reply to me at [email protected]
Thanks for any and all replies.
Dennis
Sachse, Tx

RE: Engine temp
 

Those fancy temp gauges are nice but all you need to do is stick a finger on the back plate after you land. If you can hold it there and its cold you can go leaner. If it gets uncomfortable after 3 or 4 seconds its about right. If you cant touch it, your too lean.

RE: Engine temp
 

The TT39 tends to run hotter then most OS engines and likes the low end rich about 2 1/2 to 3 turns. The backplate method works very well since using a temp gun on the head yields varied temps. If you can hear your engine sizzle and muffler puff out steam then it is way to hot.

RE: Engine temp
 

My Raptor 50 runs great at about a 220 head temp... but the backplate is too hot to touch... go figure! Maybe my fingers are too sensitive!