Skymaster Forum  

Go Back   Skymaster Forum > Messages
Register FAQ Members List Calendar Today's Posts

Reply
Thread Tools Rate Thread Display Modes
  #1  
Unread 05-04-05, 07:09 PM
big al 08 big al 08 is offline
Member
 
Join Date: Mar 2005
Location: beach in mx
Posts: 128
big al 08 is an unknown quantity at this point
cruise settings

do not wish to get into rop/lop flap, just curious what others are doing with mp/rpm/ff/rop
i normally cruise at mp = 24
rpm = 24
ff = 12gph ea.
rop = 370-390 cht
shadding usally indicates 5.8 miles per gal.
using these setting (no wind) never come close to book settings, usally only 60%.
usally around 10k, indicate 165 mph.
Reply With Quote
  #2  
Unread 05-04-05, 07:30 PM
kevin kevin is offline
Registered User
 
Join Date: Apr 2002
Location: Hillsboro, OR (HIO)
Posts: 843
kevin is on a distinguished road
Rick,

Before selling my 73P, I was using essentially the same settings (a bit more MP), and getting the same fuel flow. I was 75 rop on the first cylinder to peak (always cyl 5 or 6). I have (had) intercoolers (don't want to get into this flap again either) so I was running 2" below book MP to get about 65% power. My settings were 27" and 2400 RPM, my total fuel flow was between 24 and 25 GPH. I would flight plan 25 GPH and always use a bit less. With these settings, I would get about 10 knots below book TAS (had a TAS indicator on my airplane, never seen one before I bought the airplane), about 170 kts (185 mph indicated) at 12,000'. CHT was about what you describe in warm weather, less in really cold weather.

I believe I got lower than book TAS primarily because I had boots.

Man, brings back memories. Boy I had fun flying that airplane. You that still have one, count your blessings every flight...

Kevin
Reply With Quote
  #3  
Unread 05-05-05, 04:29 PM
Jerry De Santis's Avatar
Jerry De Santis Jerry De Santis is offline
TAS (Thin Air Seeker)
 
Join Date: Apr 2002
Location: Battle Creek, Mi
Posts: 457
Jerry De Santis is on a distinguished road
settings

1975 P337G with intercoolers, boots and air cond. On long flight I generally set 29 to 31 inch on MP and 2450 RPM. Fuel in front engine about 12 to 12.5 gph. Fuel for back engine about 13.2 to 13.8 gpm. I see the same speed as Kevin. 170 to 180 knots. in low teens.

Jerry

Last edited by kevin : 05-05-05 at 06:09 PM.
Reply With Quote
Reply



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 07:09 PM.


Powered by vBulletin® Version 3.6.9
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.