Speed brake question

[ITR1102]

I've read that the speed brakes will automatically extend when the throttle is moved to the idle position, but should this happen in all cases? And if so, is there any setting in DCS to disable this behavior?

I ask because when taxiing to the runway or cat, the speed brakes seem to be extending when the throttle is moved back to idle and they stay in the extended position unless I manually hold the switch down to retract them all the way after moving the throttle out of idle. This has been a real pain. I'm frequently finding that upon takeoff the brake is still extended. This is also happening in the air anytime the throttle goes to idle, extending the speed brake and leaving it extended until I fully retract it. Is this normal behavior?

If possible, how can this be disabled to only extend if using the speed brake switch?

[Despayre]

This is not normal behaviour.

I'm not sure why your speedbrake would come on at an idle at any time. Mine definitely does not do that. Are you sure you're using the right bindings? There's several that are similar, but provide different options.

For opening the speedbrake, I use "Speed brake extend", which expands as long as I hold it down, or until it's fully extended, and for closing it, I use "Speed brake retract " which brings it all the way down without any stops when engaged.

In the air, or on the ground, no matter what I do with the throttle, if I don't touch my speed brake, it does not move.

[Scotch75]

Does the OP mean the big fuselage speed break, or the spoilers on the wings? During ground ops (not carrier), when you have spoilers and anti-skid armed, the spoilers will extend when idle, then retract above idle.

Cheers!


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[ITR1102]

I’m referring to the speed brake, not the wing spoilers. I don’t recall this behavior prior to ~April but I’ll check my key binds as suggested and report back.


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[scommander2]

11 hours ago, ITR1102 said:

I've read that the speed brakes will automatically extend when the throttle is moved to the idle position

It does not happen to me and I have to do it manually...

[Naquaii]

11 hours ago, ITR1102 said:

I've read that the speed brakes will automatically extend when the throttle is moved to the idle position, but should this happen in all cases? And if so, is there any setting in DCS to disable this behavior?

I ask because when taxiing to the runway or cat, the speed brakes seem to be extending when the throttle is moved back to idle and they stay in the extended position unless I manually hold the switch down to retract them all the way after moving the throttle out of idle. This has been a real pain. I'm frequently finding that upon takeoff the brake is still extended. This is also happening in the air anytime the throttle goes to idle, extending the speed brake and leaving it extended until I fully retract it. Is this normal behavior?

If possible, how can this be disabled to only extend if using the speed brake switch?

The speed brakes should never extend on their own, if they do it sounds as if you have a control setup issue. The spoilers on the wings will however extend when on the ground if the anti-skid system is fully engaged.

[ITR1102]

Anything else to check? I checked the axis and nothing else is bound to the throttle. Not sure if the idle cutoff on the throttle could be a variable.




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[Despayre]

I had a weird thing with the F-4, where every time I pressed my Comms button, the engines would throttle up... (super-annoying when practicing AAR), turned out, my HOTAS was sending a keyboard "+", which was my keyboard mapping for throttle... I removed the keyboard binding, problem went away.

Why do you care? Cuz it might be something similar for you. Unless you use them, try removing the keyboard bindings (including the "B") and see if that makes any difference.

[WarthogOsl]

Is there an axis bind for speed brakes?

[ITR1102]

Is there an axis bind for speed brakes?

I looked at axis binds and the only thing moving with the throttles was for the throttle itself and no other functions. I think I still have Beta installed and may test it out. I could also export the key binds from the current version and import to Beta to see what happens.

Either that or a fresh install. But that’s a long download time.


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[draconus]

On 6/8/2024 at 12:51 AM, ITR1102 said:

Either that or a fresh install. But that’s a long download time.

There's also DCS repair thing - I recommend it.

Also check if temporary removing your F-14 controls profile from \saved games\dcs\config\input\F-14 fixes the issue. Make a backup first! If yes - it's something in your controls.

[RustBelt]

Did you verify that your Throttle doesn't have a fault? You may have a short activating the "switch".

[ITR1102]

Did you verify that your Throttle doesn't have a fault? You may have a short activating the "switch".

I haven’t done that. How would I check to see if the throttle is sending a signal for the brake? Or should I remove the bind on the throttle for the speed brake and see if it’s still happening?


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[RustBelt]

Open the windows Joystick manager (search "Joystick" in the start bar.) and see if it's firing off any buttons it shouldn't be when you move it around in the test window.

[ITR1102]

The throttle tested OK when looking in windows joystick.

After a full DCS repair, initial testing still showed the issue. Looked at key binds and the speed brake engage then had the wrong throttle button bound to it (not sure it was even a real button based on the number assigned). Changing the bind back to the proper button got me the rest of the way so I’m back in business.

Thanks all for the suggestions. I’d never used the DCS repair before but will certainly keep this in mind for future issues.


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[RustBelt]

Sounds like you had a “virtual” button assigned to an axis in your HOTAS software or something.