Spinner Hot After Flight
 

I have a Funtana .40 powered by an OS .50 SX, 12x4 prop, aluminum spinner, and Cool Power 15% helicopter fuel. The performance is outstanding and this setup is quite 3D capable. I have noticed, however, that after most flights the spinner is actually quite warm to downright hot. I have used helicopter fuel for years, but I have never had this happen before. I am fairly new to 3D flying, so my initial thought was that I was not using proper throttle management and overspeeding the eingine on downlines. I have tried flying at slower speeds and idling back on downlines, but the spinner is still warm after the flight. Any thoughts?

Thanks,
Bryan

RE: Spinner Hot After Flight
 

1 get a differnt prop.......lol, not answereing your Q but try a 12.25x3.75.

i think you must be running your engine lean. therefore the engiens hot, then the heat transfers thru the metal of the engine to the spinner.....just a theary

RE: Spinner Hot After Flight
 

I can see it getting warm if it's an aluminum spinner. Aluminum is a great conductor of heat. You've got a hot engine there and if it's an aluminum backplate connected to an aluminum spinner that engine heat will transfer to the spinner. Now if you've got a plastic spinner I'd be a little concerned. But still if your plastic spinner has an aluminum backplate it will still conduct some heat.

MIke

RE: Spinner Hot After Flight
 

I had the same prob! Ali backplate, with plastic spinner, even the plastic got hot! My engine was overheating due to low oil content in the fuel.

RE: Spinner Hot After Flight
 

It's caused by those re-entries back into the atmoshere.

RE: Spinner Hot After Flight
 

my spinners get hot
but my engines arent over heating
the are aluminum