Zero thrust power setting on Cessna 310B

[Victor L Barber]

I've been searching for the best way to determine zero thrust power on a Cessna 310B with the O-470. Since I haven't come across anything in my searches, I'm just assuming that I should go shut one down, feather it, note the performance then replicate that performance with the engine running. Anyone have a better idea or, better yet, know a target zero thrust power for that airplane?

 

[ahw01]

Off the top of my head no, though I flew the 310R. I can dig thru the systems, where you based?

Checking the following, 12" +/- sounds the right ballpark.

http://www.hsvwings.com/310GndSchool.pdf

 

[mshunter]

There is nothing in the POH? Or is a 310B to old?

 

[TwoTwoLeft]

I found that on most non-geared, naturally-aspirated piston twins setting the prop to 2300 RPM and reduceing power to just keep it in the governing range will get you close.

Nothing beats a real shutdown and (hopefully) an air restart IMO.

 

[flyboy6585]

1/4 to 1/2 inch forward of idle usually is close enough. It doesn't have to be perfect, just consistent. Usually if you keep the prop just inside of the governing range is a good start.

 

[CFI A&P]

Listen to the prop. You can hear the whistle when a prop is providing zero thrust.

 

[ahw01]

Try it single engine...

 

[Terry]

Go do an engine shutdown feather the engine pitch for blue line note climb or decent . Restart the engine select your best guess for 0 thrust pitch for blue line and match the feathered engine test with the correct power setting and now you have an accurate 0 thrust setting ..