Power settings for PA24-400

[N8632Y]

[BSAND47]

Steve –

I usually run 2400 rpm, 21” MP, 18 GPH and about 170-175 ktas. This is for local VFR fun, and it keeps all cylinder heads below 380 degrees ( some much less than others).

For economy, I’ll run it 2400 rpm, 16” MP, 16 GPH and get about 155-160 true. I don’t do it too often because I like going faster.

In Top Gun mode, it’s 24 square, 22 GPH and 185+ true. I love this setting but since retirement and living on a fixed income restrict this to IFR flying.

I do have GAMI’s but my big Lyc doesn’t like LOP settings, and, since it has 1600 hours TT I don’t run it at a setting that it balks at. My personal preference here.

The JPI instrument is a must have to monitor those cylinder head temps. My #4 runs hottest, and when it’s at 380 degrees the other 7 are cooler and happy little campers!

Bill
N63F
PA-24-400

[N8632Y]

Bill,
thanks for the help, i'll pass it along.
Yes, I agree, JPI is a must. So the big 8 likes 2400 RPM, set the throttle to get 55-65-75 % power, and lean to be 100 ROP (best power) is what she likes?

The twin is easy, at 6000 ft i could just set her at 22"/24 RPM, 65%, pull the mix till she gets rough and then just enrichen for smooth flight, easy.

I have Doug Killough's POH for my twin, is there one for the 400? With all the performance charts?
thanks,
steve

[Zach Grant L1011jock]

Steve,

Yes, there is a 400 ICS (Killough) POH available from Webco.

-Zach

[N8632Y]

thanks, again Zach, i'll pass it along,
This site is a better source of information than Wikipedia!
steve