![]() |
If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
![]()
Hi. I am a student pilot and have always done "proper" leaning per flight altitude. I should have asked this a long time ago but...anyway...when using the mixture control to get "optimum" RPM at altitude, what is the "optimum" air/fuel ratio ? 3:1, 4:1, etc...
Thank you. |
#2
|
|||
|
|||
![]()
"dtvonly" wrote in message ...
Hi. I am a student pilot and have always done "proper" leaning per flight altitude. I should have asked this a long time ago but...anyway...when using the mixture control to get "optimum" RPM at altitude, what is the "optimum" air/fuel ratio ? 3:1, 4:1, etc... Thank you. dtvonly Unless you have a device that reads out your air/fuel ratio you should probably just use the old method. At cruise altitude with power/speed stable, just lean out the mixture control until the engine runs a little rough and then push it back in about an inch. |
#3
|
|||
|
|||
![]()
Varies with the engine, with the fuel atomizaion scheme, displacement,
etc, but most of us live with a 15:1 air fuel ratio as a starting point. Jim On Mon, 14 May 2012 23:58:14 +0000, dtvonly wrote: Hi. I am a student pilot and have always done "proper" leaning per flight altitude. I should have asked this a long time ago but...anyway...when using the mixture control to get "optimum" RPM at altitude, what is the "optimum" air/fuel ratio ? 3:1, 4:1, etc... Thank you. |
#4
|
|||
|
|||
![]()
RST Engineering writes:
Varies with the engine, with the fuel atomizaion scheme, displacement, etc, but most of us live with a 15:1 air fuel ratio as a starting point. Jim By volume or by mass? -- Anyone who has two shirts when someone has none is not a Christian. ~ Lenny Bruce |
Thread Tools | |
Display Modes | |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Cessna 172 fuel selector | Ross | Owning | 12 | December 1st 08 05:44 PM |
Proper Torque for Fuel Fittings | Steve Waltner | Home Built | 10 | February 20th 05 12:46 AM |
Cessna 172 Fuel Flowmeter? | CVBreard | Piloting | 9 | January 26th 05 07:00 AM |
Proper yoke calibration | Rans | Simulators | 0 | December 1st 04 03:38 PM |
Proper stall recovery technique | Chris OCallaghan | Soaring | 0 | February 2nd 04 10:33 PM |