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Impossible to Taxi with ENG 3-4 Off

Featured Replies

Hello;

Is it just me, or is it impossible to taxi her with N3-4 been off? 

Thank you. 

 

Best Regards,

 

Vasily B.

 

I7 7700K, RTX2070 XC, 32Gb Ram, Win 10 Pro 64bit, P3D v4

Depends on your load.

Konstantin Kharlamov

Supporter of: PMDG, FlyTampa, FsDreamTeam, FlightBeam, FSFX.

747_400_F1472553553.png

  • Author

Not to heavy, as I have tried to taxi after completing a 8 hr flight with her. 

What i mean is that you cant turn her. 

I7 7700K, RTX2070 XC, 32Gb Ram, Win 10 Pro 64bit, P3D v4

I generally turn off engines 1 and 4. That way it is easier

Konstantin Kharlamov

Supporter of: PMDG, FlyTampa, FsDreamTeam, FlightBeam, FSFX.

747_400_F1472553553.png

I turn off 2 and 3, as those are closer to the fuselage where the ground service vehicles will be wanting to get to. Turning off 1 and 2 or 3 and 4 seems less helpful.

Wes Meyer

 

 


I generally turn off engines 1 and 4. That way it is easier

 

Bad idea if you want to turn or stop though (think about which hydraulic systems power the brakes and steering...).

 

As Wes says, if you're going to do engine-out taxi on the 747 then the normal thing to do is to shut down 3, or 2 and 3.

Simon Kelsey

sig_FSLBetaTester.jpg

 

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)

  • Author

Lads,

Im not asking about SOP or what some companies do to save money. All I am saying is that if you turn off N3 and N4. You cant turn her. Is that a bug? Or not? 

 

Thank you. 

I7 7700K, RTX2070 XC, 32Gb Ram, Win 10 Pro 64bit, P3D v4

You mean, you can't turn right in that case, at higher GWs right? 

 

Any way, here's another clue:

 

 

and also at the end of this other video:

 

https://youtu.be/lE_aFbaucqA?t=895

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)

  • Author

I cant turn left. It will turn right on its own with only 3% GW. 

I7 7700K, RTX2070 XC, 32Gb Ram, Win 10 Pro 64bit, P3D v4

I cant turn left. It will turn right on its own with only 3% GW.

 

It isn't a bug. Hyd system 4 powers the nosewheel and body gear steering. So it's not surprising you can't turn left. It will want to turn right because of the thrust asymmetry you have.

ki9cAAb.jpg

  • Author

thank you

I7 7700K, RTX2070 XC, 32Gb Ram, Win 10 Pro 64bit, P3D v4

It isn't a bug. Hyd system 4 powers the nosewheel and body gear steering. So it's not surprising you can't turn left. It will want to turn right because of the thrust asymmetry you have.

Wouldn't the demand pumps take over from the engine pumps tho so the NW steering would still work?

Bryan Richards

 

"People depend so much on automation that they forget how to get the automation to work." B.W.

Wouldn't the demand pumps take over from the engine pumps tho so the NW steering would still work?

 

Yes

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)

Wouldn't the demand pumps take over from the engine pumps tho so the NW steering would still work?

Yes, but at idle thrust on only two engines and with three packs on there might not be enough duct pressure to fully power the hyd system.

ki9cAAb.jpg

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