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TBM 930 Rudder Trim

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Very much enjoying the updated TBM 930, amazed they've managed to keep the frame rates reasonable, considering the amount of data on the screens that are constantly updating. 

My only issue at the moment is I can't get the rudder trim to work. I have to apply left rudder to keep it balanced during the climb and cruise. The rudder trim switch is on the left side of the control column, and I see a left and right circle with an arrow if I hover over it, but pressing mouse buttons, or using the scroll wheel don't seem to have any effect. 

The elevator and aileron trim work fine, but not the rudder. I've tried binding control column buttons to the rudder trim, and tried setting auto rudder on, but makes no difference.

Means I'm constantly pressing on the pedals to stay balanced, just a tad tedious.

Any thoughts?

Eugene

The rudder trim works ok for me. I have left and right rudder trim bound to 2 joystick buttons. I don't use the in-cockpit physical switch.

And I don't experience any unexpected pulling when flying the TBM. Have you checked the calibration of your rudder axis? Kinda sounds like it's off center.

Ryzen 7 7800X3D/B650 X AX | 5090 | 32gig | Win10 | Pimax Crystal Light

  • Author

Thanks for the input guys, I created a new profile, and mapped a rocker switch to left rudder trim, and right rudder trim, looks identical to the original profile, but it now works via the rocker switch, so I can trim normally.

The centre position on the rudder calibration page, looks normal, so not sure why the TBM is so far out of rudder trim in the climb/cruise, other aircraft aren't. 

But, anyway, I can trim it properly now, so that's the main thing.

We've been getting a lot of fog in the south of the UK, last few days. Synthetic vision is amazing. I took off from Lands End airfield EGHC this morning, thick fog, no way I'd have kept it on the runway without it, and no way I'd have managed to land at Cardiff without it. Definitely  not legal, but a lot of fun!

Good to see you got it working. It's normal for this plane to need a trim adjustment for cruise since the wings are at a lower angle of attack and there is less power used as compared to the takeoff and climb-out phases which will reduce your pfactor and therefore you should need less right-rudder trim dialed in.

That said I also noticed that the animated rudder trim gauge cannot really be used as it is in reality since in the sim you simply can't apply a ton of right trim before take-off to move that gauge into the green band. The airplane will not fly correctly if you do that. I tend to takeoff with neutral trim and use my foot for the right rudder until im at cruise, and then depedning on my w&b and the winds I will trim it for cruise for whatever it needs or asks for...which can even be some left trim.

This airplane fly's nicely but it doesn't actually fly like the real one...not only trim-wise but also on final approach, where the sim plane has too much flap drag and not enough flap lift to fly her like the real plane. I have since fixed that so it's behavior and numbers are closer to reality for me.

Edited by hangar

  • 3 weeks later...
On 2/17/2023 at 6:47 AM, Overload said:

Thanks for the input guys, I created a new profile, and mapped a rocker switch to left rudder trim, and right rudder trim, looks identical to the original profile, but it now works via the rocker switch, so I can trim normally.

The centre position on the rudder calibration page, looks normal, so not sure why the TBM is so far out of rudder trim in the climb/cruise, other aircraft aren't. 

But, anyway, I can trim it properly now, so that's the main thing.

We've been getting a lot of fog in the south of the UK, last few days. Synthetic vision is amazing. I took off from Lands End airfield EGHC this morning, thick fog, no way I'd have kept it on the runway without it, and no way I'd have managed to land at Cardiff without it. Definitely  not legal, but a lot of fun!

Hey Overload, I'm having the same issue. What did you use to bind the L & R rudder trims? Did you use SPAD.next? That's what I'm using and they're bound to buttons 11 & 12 on the Honeycomb Alpha. But it's still not working.

If anyone can provide any suggestion, it would be greatly appreciated.

Edited by FlyingAce

Tony Boutros

Aviation Enthusiast, Businessman/Entrepreneur, Teacher, Philosopher, Dancer, Husband, Father.

(Prove to me that I am who I say I am :rolleyes:)

  • Author

I do have SPAD, but I just used the built in Control assignments matched to a rocker switch on my Honeycomb Alpha yoke. "Flight Control Surfaces - Control trimming surfaces "- Rudder trim left - Joystick button 11 (far right rocker switch), Rudder trim right joystick button 12.

Eugene

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