On the ground for turning the rudder of real L-39 don't move...

Hello,

I have a question about the rudder of L-39, I link you a video where the rudder don't move or move just a little bit when these two L-39 turn to right.

But with our L-39 when I turn to right the rudder move fully to right is it correct or just a little bug to fix ?

Here on this video at 1:22 and 1:52 we can see the rudder who don't move and however the L-39 turn to right.

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In advance thanks, Skull.

good eye!

And here (at 0:34, 0:48 and 8:12) is a Czech L-39ZA with large rudder deflections as it follows the taxiway out of/into a hardened aircraft shelter.

The Thai version of L-39ZA is the L-39ZA/ART and has Israeli Elbit avionics, so is probably quite a bit different to the L-39ZA modelled in DCS.

Hello guys,

Thanks for your answers,

And here (at 0:34, 0:48 and 8:12) is a Czech L-39ZA with large rudder deflections as it follows the taxiway out of/into a hardened aircraft shelter.

Yes you have right with your video (I really like this video) I can see the large rudder deflection, it's a mistake from me.

So our model is very good, just an error from me, thanks again. Skull

Since the L-39 use the rudderpedals to control differential braking, I don't see how you can apply the differential brake without moving the rudder..?

Do the Thai ZA have a different system? Toe brakes, perhaps?

Goblin, we can clearly see on the skull's video that Thai's ZA uses their rudder to control differential breaking. But its a very light deflection. Maybe some modifications to the hydraulic system or an advanced electronic management of hydraulics systems of the L-39ZA/ART make useless to turn the rudder to a large deflection, i don't know..

Or maybe wee don't need anyway to have a high pressure on the rudder to make a turn effective

ZA/ART steers with differential braking, but by using toe brakes, so they don't have to deflect the rudder. ;)

Goblin, we can clearly see on the skull's video that Thai's ZA uses their rudder to control differential breaking. But its a very light deflection

Well, no... We see that the rudder moves very slightly when the aircraft turns. That does not mean that it is the deflection of the rudder that controls the braking. It could just be the pilot depressing the right toe brake and while doing so also deflect the rudder slightly.

GeorgeLKMT is probably correct :)

Here is a photo of L-39 ZA/ART cockpit with HUD/UFC, western-style instrumens and you can see toebrakes and removed gearbrake handle from the stick.

Nice pit!

So, toe brakes explains the difference :)

Here is a photo of L-39 ZA/ART cockpit with HUD/UFC, western-style instrumens and you can see toebrakes and removed gearbrake handle from the stick.

Yes it's possible, maybe many versions of the L-39. It's more easy to turn with the toes than gearbrake.

It's more easy to turn with the toes than gearbrake.