Brake axis settings

[mez140]

Hi there all,

I have a set of T-Pendular rudders. All is well with most MSFS settings, but not brakes.

No matter what I try, the brake axis functions improperly compared to a real aircraft; it is not how I would expect at all. Context is, I am a long time MS simmer (20+ years), part time flight simulator coder (MSFS, P3D, DCS c++) and full time senior flight instructor (15+ years on C172, PA44, B200, B350 etc). So please read the below with that context in mind.

At ‘zero input’ on my brake pedals, the MSFS brakes are off. That is all fine.

But as soon as I touch the brakes at all, even ever so slightly, the axis input jumps straight to ~50%.

What I would expect, is input would begin at zero and increase (according to the curves) until full deflection.

So it seems to me, MSFS brake axis are designed to jump from zero to ~50% at the first input of brake axis deflection.

The problem with the ‘jump’ to ~50% is most aircraft go from no brakes to SOME deflection of the brake pedal with even the slightest of brake pedal input. In aircraft like the C172 it makes it impossible to ‘precisely’ input gradual brake, like I would in the aircraft.

I have tried many different variations of the curves, but no matter what I do I cannot get the input to start at ‘zero’ and gradually increase. It always goes from nothing to around 50% on the sensitivity screen. I have tried calibrating through the MS settings and restarting everything, to no avail.

Has anyone stumbled on this and solved the issue? My next step is to simply try modifying the C172 to make it less ‘grabby’ on the brakes, I’m out of any other ideas.

Thanks!

[skypilotYTS]

Calibrate them in Windows first and see if that helps.

You’ll find it under USB Game Controllers.

[NeoKingRthur]

It doesn’t look like an MSFS thing when it comes to axis. If MSFS already detected an axis, it will work with gradual increase as you press them. If on the axis sensitivity page the pointer is already jumping to 50% then to 100%, it looks like an input thing from the pedal themselves.

Try to test using the Thrustmaster Control Panel. Make sure the toe brakes apply gradually on the green bar as well and not jumping around similar to the one in MSFS.

You might need to update the firmware and do a calibration. You can find them all in Thrustmaster - Technical support website

[mez140]

Thanks, per OP already tried that.

[mez140]

Will give it a go and report back, thanks.

[OMICO4146]

Hello,

as first quick look to your settings I see that in first screenshot are brakes fully on, pressed. I expect brakes axis without any death zone, why you want at half of brake press some death zone?? I recommend release parking brake and set brakes with in cockpit look cooperation.

[mez140]

Thanks, but that’s not the issue.

Here is a detailed breakdown of what I am doing, in order, and the response from the sim:

1. No brake input. Axis reads zero
2. Apply a tiny amount (1/100th) brake pedal deflection, axis reads 50%
3. Apply more brake, axis goes from 50% to 100% according to the curve.

I have tried recalibrating with MS and now the thrustmaster tool; there is no issue with the calibration. This is a sim problem, or maybe something to do with how the sim reads the axis values for the brake axis.

Does anyone know how to set up curves/controller settings (maybe in a cfg file) so I can avoid this situation? At the moment, my brakes are either 0% or go from 50% up to 100% with pedal.

Thanks

[mez140]

Self reply:

There must be a bug in the latest MSFS build, as I have seemingly resolved the issue by deleting the profile and creating a new one.

I can’t be sure how/why this was caused, but certainly adding a new profile has fixed the issue.

Thanks all who tried to assist