Legs (or any bottom part) explode when undocking/decoupling while landed

[infinite_monkey]

I ran into an annoying issue: I want to decouple stuff (decoupler set to 0 ejection force) after landing, so I can deploy it with a crane. But as soon as I decouple, stuff starts exploding - usually the landing legs. If I'm lucky and my rocket falls down pretty straight, it lands on its engine. If I'm even more lucky, my cargo survived, and I can move it around with my crane. But as soon as I decouple my next peace of cargo, the same thing happens again, this time blowing up the engine.

My guess is some physics glitch when recalculating the vessel's mass. I have lots of mods installed, for the crane I use Infernal Robotics and KAS (0.6 + 1.0 BETA), vessels are from Tundra Exploration, landing legs from KRE (but it happens with stock legs as well)

Note that this is NOT the same as the 1.4.2 exploding landing legs bug - I can land just fine, it's AFTER landing that things go wrong.

[linuxgurugamer]

If you have Autostrut on, that might be causing issues.

 

[4x4cheesecake]

I assume you play on KSP 1.4.4? It is a known bug and listed in the bugtracker #19402.

Maybe try to use the debug menu and enable 'no crash damage' as soon as you want to dock something.

[infinite_monkey]

Thanks @4x4cheesecake, yes I play on 1.4.4. Unfortunately, I didn't backup my career game, so I can't revert to 1.4.3 

For now I'll disable crash damage like you suggested

[4x4cheesecake]

@infinite_monkey Hey look, the new patch is released:

Quote

* Fix wheel explosions on docking landed vessels.
* Fix vessels jumping when docking landed to a large mass vessel.

[infinite_monkey]

Yay, that was quick  Oh, and it also says

• Improvements to wheels/legs bouncing/sliding and oscillations.

So I hope next time my rocket doesn't fall off the launchpad after leaving it there for too long without launch clamps 

[infinite_monkey]

On 7/26/2018 at 11:06 PM, 4x4cheesecake said:

* Fix vessels jumping when docking landed to a large mass vessel.

It seems it is fixed-ish, but using KAS, my BFR still makes a jump, crushing the launchpad

[4x4cheesecake]

2 minutes ago, infinite_monkey said:

It seems it is fixed-ish, but using KAS, my BFR still makes a jump, crushing the launchpad

That's unfortunate
I'm not using KAS, so I cannot tell anything about it but since SQUAD messed around with docking procedure which is (at least in some kind I guess) used by KAS, it is possible that the patch somehow breaks KAS. You may want to report it in the KAS release thread, maybe the guys there know more about the issue

I've already seen another report, saying that the issue is not totally fixed by SQUAD (I guess that's why you say 'fixed-ish'^^), so this can be still the stock bug though. I don't know any workaround for this right now, maybe someone else?

[The Cake is a Lie]

Still had a space plane landed on the mun have all of its 12 back landing gear explode when decoupling a rover up front.  Worked around it by decoupling the rover in the cargo bay while the space plane sat bare-belly on the munar-surface.  Then gear and ramps can be redeployed ect.  Sketchy.

Using auto-struts on all craft components.

playing vanilla 1.4.5.2243

Edited October 4, 2018 by The Cake is a Lie