I just purchased a Viper Temp guage that you mount to the engine and if gives an LCD readout of Engine temp it will also show the max temp reached during the flight.
I have a Raptor 50, OS 50, Cool Power 30% Heli fuel, standard flying for now.
I mounted the unit per instructions, What Temp Range should I be looking for?? High, Low?
I'll use (F) Reading.
Thanks,

David

These cute little temp guages are really catching on. Trouble is there are no published specs for glow engines as far as I know. Dont let anybody see you aiming one of those at your engine. Nothing worse that having them ask you what the limit is and you have no idea

I have seen temps around 180-190 as normal. If you can shut down and walk back to the bench after a flight and hold your finger on the engine backplate then you should be okay.

car engine guys use temp guns all the time, and manufacturers usually publish the specs. under 200 is too cold/rich, while most engines top out around 280. This is at the glowplug, anywhere else is going to be inaccurate.

I sat in on an engine cliic at IRCHA and they were saying the temp should be around 220 I believe. And as you said, at the head. Anywhere else, like the backplate, is meaningless.


Mike

Checking all my engines(airplanes and helos) on the top of the head I look for 200, less than that it's rich and over 220 it's lean. All this is on 2 strokes, 4 strokes can have a false peak and be off....

I used to race 1/8 buggies and we used to run our engines around 220. I have a Caliber now and I am still breaking in the engine so I'm still running it on the rich side. One good old fashion way to check it is to spit on your finger and touch the head by the glow plug, if it just sits there, you can lean out, if it starts to sizzle alittle, your pretty good, and if it just dissappears instantly, your to hot.

I use the venom temp gauge on my Raptor 50.
What I have found for my O.S. 50 SX-h Hyper is that it
likes to be around 213-220*
I have the probe mounted as snug as I can get it next to the
head.