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How to lean piston engine for take off

Featured Replies

I'm pretty sure a lot of folks will find it useful in 2020/2024, especially with high fidelity add ons from A2A or BS

 

Edited by sd_flyer

Life time flight sim enthusiast, current airplane owner 172P (past C182F). FAA CP/IR ASEL/AMEL, FI ASEL

My System: AMD Ryzen 9 9950X3D , MSI X870 GAMING PLUS, 64G RAM, ASUS RTX5090, 4T SSD

Put my hands on (pic/dual/given)

7GCAA, 8KCAB, BE24, BE76, BE35-C33, BE35, C150, C152, C172B/N/P/R/SP, 182F, M20E,M20C, M20J, AT6(SNJ4), PA28-140,PA28-151, PA28-161,PA28-181,PA28RT-201,PA28R-180/201T, PA24-250, PA32-300R, PA44, AC114, YAK-18T, YAK-52, SR22

 

Probably works only with good addons, because default reciprocating engines still had the fs5 time "Leaning Bug" that has been plaguing them since the early 90s of last Century 🙂

It's a bug that makes leaning above around 3000' MSL have the opposite effect of RW leaning on Fuel Flow.

It does not affect power though, which is actually coherent with the "theory of leaning", so it "works" the way it is supposed in as far as having more power available goes...

Flying gliders since 1980

Flightsimming since 1992

AMD Ryzen 5600x, 32GB RAM, GPU Nvidia RTX 3060 Ti 8 GB, 1 TB and 500 GB nvme2 SSD drives, HP 27" 60Hz LED monitor @ 1920x1080, T16000, Hotas from old X52 Pro, Saitek Combat Rudder Pro (2010 model)

Finally I get to see Rod Machado's face, after following his lessons (and dad jokes) in FS9! I guess I'll be well below 75% power for leaving SKBO.

Best regards,
Luis Hernández 20px-Flag_of_Colombia.svg.png20px-Flag_of_Argentina.svg.png

Main rig: self built, AMD Ryzen 7 5700X3D (with SMT off and CO -50 mV), 2x16 GB DDR4-3200 RAM, Nvidia RTX 5060Ti 16GB, 256 GB M.2 SSD (OS+apps) + 2x1 TB SATA III SSD (sims) + 1 TB 7200 rpm HDD (storage), ID-Cooling SE-224-XTS air cooler, Viewsonic VX2458-MHD 1920x1080@120-144 Hz (G-sync compatible), Windows 11. Running P3D v5.4 (with v4.5 scenery objects as an additional library, just in case), FSX-SE, MSFS2020, MSFS2024 and even FS9! Lossless Scaling for all my sims. What a godsend...

Mobile rig: ASUS Zenbook UM425QA (AMD Ryzen 7 5800H APU @3.2 GHz and boost disabled, 1 TB M.2 SSD, 16 GB RAM, Windows 11 Pro). Running FS9 there .

VKB Gladiator NXT Premium Left + GNX THQ as primary controllers. Xbox Series X|S wireless controller as standby/mobile.

Only at high altitude would I lean the engine, since at sea-levelish Airfields it probably safer to run rich inorder to help cool the engine.

System: i7-10700K, 32GB RAM, RTX4070 12GB, 1 x 1TB SSD, 2 x 2TB SSD, 1x 2TB HDD, Win10 64bit Home, Meta Quest 3

  • Author
34 minutes ago, Wothan said:

Only at high altitude would I lean the engine, since at sea-levelish Airfields it probably safer to run rich inorder to help cool the engine.

Sea level + high density and you should lean

Life time flight sim enthusiast, current airplane owner 172P (past C182F). FAA CP/IR ASEL/AMEL, FI ASEL

My System: AMD Ryzen 9 9950X3D , MSI X870 GAMING PLUS, 64G RAM, ASUS RTX5090, 4T SSD

Put my hands on (pic/dual/given)

7GCAA, 8KCAB, BE24, BE76, BE35-C33, BE35, C150, C152, C172B/N/P/R/SP, 182F, M20E,M20C, M20J, AT6(SNJ4), PA28-140,PA28-151, PA28-161,PA28-181,PA28RT-201,PA28R-180/201T, PA24-250, PA32-300R, PA44, AC114, YAK-18T, YAK-52, SR22

 

3 hours ago, Luis Hernandez said:

Finally I get to see Rod Machado's face, after following his lessons (and dad jokes) in FS9! I guess I'll be well below 75% power for leaving SKBO.

I remember in P3D or maybe FSX or sometime in the past, I was soooooo glad to have a turbocharged Cessna 182 to fly into SKBO.  It was neat approaching Colombia from the northwest, from Panama, as I saw the mountains ahead of me.

Rhett

7800X3D 96 GB G.Skill Flare  Gigabyte 4090  Crucial P5 Plus 2TB

2 hours ago, sd_flyer said:

Sea level + high density and you should lean

One thing I do at altitude -- and I don't know if this is correct or not -- after I do my mag check, I rev it up and lean, either by ear or better using an EGT gauge if I have one...to see exactly where my peak power is.    Is this the way to do this?

Rhett

7800X3D 96 GB G.Skill Flare  Gigabyte 4090  Crucial P5 Plus 2TB

40 minutes ago, Mace said:

One thing I do at altitude -- and I don't know if this is correct or not -- after I do my mag check, I rev it up and lean, either by ear or better using an EGT gauge if I have one...to see exactly where my peak power is.    Is this the way to do this?

This is absolutely correct!

Felix

Win11 + Intel i5 [email protected] GHz (overclocked) + 64GB DDR4 RAM@3600MHz + 24GB GeForce RTX3090 + M.2 SSD 2TB + 1TB SSD + 2TB HDD + VelocityOne Flightstick + HOTAS Thrustmaster (throttle only) + Saitek ProFlight Rudder Pedals + Meta Quest 3

  • Author
27 minutes ago, Mace said:

One thing I do at altitude -- and I don't know if this is correct or not -- after I do my mag check, I rev it up and lean, either by ear or better using an EGT gauge if I have one...to see exactly where my peak power is.    Is this the way to do this?

If you are not blasting someone behind you why not? Another option of course is runway if time permit

 

Life time flight sim enthusiast, current airplane owner 172P (past C182F). FAA CP/IR ASEL/AMEL, FI ASEL

My System: AMD Ryzen 9 9950X3D , MSI X870 GAMING PLUS, 64G RAM, ASUS RTX5090, 4T SSD

Put my hands on (pic/dual/given)

7GCAA, 8KCAB, BE24, BE76, BE35-C33, BE35, C150, C152, C172B/N/P/R/SP, 182F, M20E,M20C, M20J, AT6(SNJ4), PA28-140,PA28-151, PA28-161,PA28-181,PA28RT-201,PA28R-180/201T, PA24-250, PA32-300R, PA44, AC114, YAK-18T, YAK-52, SR22

 

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