SAS not working with this ship design?

[stulleman]

Hello guys!

I've came across a weird thing (bug?) . This is my ship design:

The controls are reversed and because of that SAS just spins the ship in all directions. Is this a design problem? How can I avoid it?

This is a design for a landing stage.

Thanks!

[Red Iron Crown]

It's a problem with engine gimbals not working properly when the engines are above the center of mass, they move in the opposite of the desired direction. Disable the gimbals on those engines and I bet it will work fine.

[Asharad]

That picture is really tiny.

[TheMoonRover]

I suspect the probe core is rotated relative to the other parts, or maybe upside-down. Or it could be being controlled from an odd place. If you have other probe cores or crewed capsules you can right click them and select "Control from here" and the NavBall will orient itself to the controlled part. (You can't do it with those Hitchhiker Modules though)

And that is some serious lurking

- - - Updated - - -

Or what Red Iron Crown said

[stulleman]

I have no idea why he scaled the image so much

@Red Iron Crown It indeed was the gimbals turning in the wrong direction. The problem is that I need the gimbals

If there is no other way I have to compensate with RCS thrusters, but I tried to avoid

Thanks

[Red Iron Crown]

If you mount the engines low enough the gimbals should work the way you want.

[stulleman]

Yeah but I need the engines that high because when the thing is landed I will decouple the top part so the tank and the engines fly away.

But it seems like it's not possible right now

Are the devs aware of this?

[Red Iron Crown]

The bug is quite old: http://bugs.kerbalspaceprogram.com/issues/386 Really should be fixed for 1.0 IMO. It's sort of silly that control surfaces can work whether ahead or behind the CoM but gimbals don't.

A possible workaround you could use is to mount girders or beams to the upper section, extending low enough to get the engines below the CoM.

[stulleman]

Thanks for pointing out. Would love to see this in 1.0. But I think the chances are low, because I hardly found anybody with the same problem.

[Vanamonde]

Moved to Gameplay Questions, since it's a how-to kind of a thing.

[Greenfire32]

I'd do what Red Iron Crown said and disable the engine gimbal. If you still need more control authority, you could add tiny RCS thrusters to compensate for the loss of the gimbal.