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HelicopterGasser Model RC HelicoptersOther › Infrared Temp gun ?
01-26-2007 05:19 PM  10 years agoPost 1
Brett Horton

rrKey Veteran

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Where is the best place to check your engine temps?
I cannot get to all the fins, just toward the bottom of the cylinder.

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01-26-2007 06:40 PM  10 years agoPost 2
link

rrApprentice

Gautier,ms

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temp

The best place is at the plug but shooting at the fins is not going to give you an accurate temp because they are disapating the heat rapidly.

Enjoy the day for we know not what tomorrow holds

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01-26-2007 11:32 PM  10 years agoPost 3
Ts8103

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Baltimore, Maryland

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I check mine two fins down on the carb. side.
Tone

Team Outrage
YS engines
Switchglo
Baltimore Boyz

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01-27-2007 01:44 AM  10 years agoPost 4
High Spy

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UK

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I would suggest that where you take the temperature reading from does not matter, within reason. The important thing is to take the reading from the same place each time. We place sensors to our engines, mounted under the cooling fins. The temperature may not be accurate but we are looking for consistency. Over time we can then assess whether the engine is running as we want it. I would however suggest that you don't bother with any readings from the exhaust or manifold, these get very hot and dissipate temperature back to the engine very quickly on landing. Graph below shows engine temp with throttle percentage. Note the engine temp when the throttle is shut down, this is heat from the exhaust going back into the head.

Taking individual readings, requires sound methodology to produce data worth having. Every reading will need to be taken in exact timings to the last. According to our flight recorder, a reading taken just after landing will show an engine with a temperature nearly ten degrees higher than in flight.

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