Mixture axis used to work fine on my piston-engined aircraft.

Sometime, and it may have been with upgrading to SU3, it broke.

What happens now on the two aircraft I've tested, and the two I use most in career mode, Cessna 172 and 400, is that while the mixture knob in the cockpit follows the movement of the throttle quadrant hardware lever, the mixture doesn't reduce until I get right near the detent, when it drops to zero.  The fuel flow gauge follows this pattern.

This happens on both my gaming laptop with a Logitech/Saitek throttle quadrant and my desktop with a CH unit.

I've checked for and removed other assignments to the mixture axis, but no change.

The response curve is set to linear.

Has anyone else had this problem and is there any solution?

Edited October 8, 2025Oct 8 by Malcolm Street
Add reference to gauge response.

4 hours ago, Malcolm Street said:

What happens now on the two aircraft I've tested, and the two I use most in career mode, Cessna 172 and 400, is that while the mixture knob in the cockpit follows the movement of the throttle quadrant hardware lever, the mixture doesn't reduce until I get right near the detent, when it drops to zero.  The fuel flow gauge follows this pattern.

I can see that same thing happening that you describe in the default C172. However, I use Lorby's Axis and Ohs to control all the axes in a plane so whatever the problem, it's in the plane and not your controllers.

Same thing in the 400.

BTW, I'm in the SU4 beta so as yet it's not fixed but I will report it.

 

Update: Automixture was checked (set to ON) in Assistances. Turn it off and it works correctly.

Edited October 8, 2025Oct 8 by Twenty6
update

10 hours ago, Twenty6 said:

Update: Automixture was checked (set to ON) in Assistances. Turn it off and it works correctly.

That was it!  Checking Assistances it had some time somehow reverted to all assists on, but I never did that nor (given I like to fly without most assistances) would I have done it deliberately.

Turning off other assists has also sorted out my pitch problem with the Cessna 400.

Many thanks!  So the question is are there circumstances in which MSFS2024 will reset the assists to maximum?

13 hours ago, Malcolm Street said:

So the question is are there circumstances in which MSFS2024 will reset the assists

When you stumble around in the dark like Asobo is fond of doing, things will sometimes get knocked about. Was a common occurrence in early FS2020 updates.