Veering Left using Brakes A10C2

[Leg2ion]

Apologies if resurrecting something old - seen a few posts regarding the F16 but not the A10C2.

 

Noticed last night on landing I veered to the left as I applied wheels brakes. Not noticed it before as my landings are 'dicey'!!! Thought it may have been 'me' so checked pedal bindings etc - all good. 

 

Just lined up quickly on a runway, applied power to get rolling, reduced power and hit 'W' (to eliminate any possible issue with my pedals), and yep - veered to the left. Straightened up, rolling, brakes - to the left, one more time - same. Wind at 0 m/s so shouldn't be any weather vaning.

 

Track attached.

Wheel Brake Taxi.trk

[SJBMX]

When I had TFRP pedals, I had the exact same issue with both the Hog and the Hornet. I suspect that it's because the pedals had poor ergonomics (too narrow) and were very touchy (springs were too light), even with strong curves. Using the keyboard for controlling the rudder and brakes, this simply doesn't happen.

For the record, I presently use Q/E for rudder, W for brakes, and control my throttle during taxi and takeoff using my forearm. Haven't had any issues at all.

Edited April 9, 2021 by SJBMX

[Leg2ion]

That'll be why I didn't use my pedals to brake and just pressed on 'W' - and still veered off...

[SJBMX]

Oh, I missed that. Hrm. Without watching the track (I'm not on my PC presently), what was your loadout? The first thing that comes to mind is that it could be a weight imbalance? On takeoff, I'm usually pulling *slightly* to the left when loaded up with my "typical" unbalanced loadout (ALQ-184 or GBU-12 and a rocket pod on the left, AIM-9 or empty and TGP on the right) but it's never been anything more than a slightest annoyance with the keyboard (but was very noticeable with the pedals).

[Leg2ion]

No problems! Fairly certain I had no loadout. Basically set a mission up from Tonopah, hot start from runway, pushed throttle fwd to get a decent taxi speed (less than 50), cut throttle, waitied a few seconds then pressed 'W'. Had around a 5 degree yaw to the left - it being exaggerated towards the end of the brake. 

[SJBMX]

Hrm. The other thing that comes to mind, that I'd honestly never really even thought about, is that the front wheel is offset to the right as a result of the GAU-8, so it could be that it naturally wants to drift left somewhat as a result?

[Leg2ion]

Could be - but I then would expect maximum turn rate to be exaggerated at the higher speed - and not the lower? Unless of course the opposite applies, and the higher speed helps keep it more stable.

[silverdevil]

I too have noticed this when NWS engaged below 70. Example. I taxi and stop short of runway. Applying brakes via button pulls to left. 

[Leg2ion]

To be honest, if affected by the nose wheel position - offset to the right - wouldn't/shouldn't the nose pull to the right (shorter turning moment?).

Edited April 11, 2021 by Leg2ion

[silverdevil]

i believe gravity is in play here. the weight of the gun / ammo perhaps? i am not sure. maybe an ED person will know more.

[Diesel_Thunder]

The only thing that the offset front gear should affect is the turn radius. You should be able to make a tighter turn to the right than turning left. That’s how it affects the real Hog.