Mun base self-destructs

[michal.don]

Hi guys,

A serious problem has happened to my Mun base. The base is modular and was built on the surface of Mun from cca 10 independent modules. Everything went really smooth, but when I loaded the base yesterday, it started to wobble after aproximately 10 seconds. The wobbling became stronger and stronger and after a while, the base disassembled violently in a huge ball of fire and sent the poor kolonists to a suborbital trajectory. When i quickloaded the last save, the same thing happened two or three times. And the last time I tried quickloading, tha base didn't explode, but started to move across the surface at about 1 m/s.

My install isn't heavily modded - just KIS/KAS, KER and chatterer. I suspect that the landing legs are somehow at fault, but I have no idea how to fix it. I would appreciate any advice, I really like my base and a lot of time went into building it.

If it would help, I can post some pics when I come home from work.

Thanks,

Michal.don

[Warzouz]

Which version do you play ? 1.1.2 ?

I had explosive wobbling with mun space station (well, I call it the Mun curse becaus I only had that on my Mun space stations...). There is 3 main causes

• Docking rings and reactions wheel. I suggest to toggle off all reaction wheels of your station or base.
• Clipping : Clipping parts may induce some phantom forces (that reaction wheel will try to counter act)
• Landing struts and wheels : The new struts and wheel are kind of buggy and can induce jitter or phantom forces.

As for a solution, I'm considering using octagonal struts  instead of landing gear. I'm always landing at less than 2m/s so I don't need suspension...

Edited May 6, 2016 by Warzouz

[michal.don]

32 minutes ago, Warzouz said:

Which version do you play ? 1.1.2 ?

I had explosive wobbling with mun space station (well, I call it the Mun curse becaus I only had that on my Mun space stations...). There is 3 main causes

• Docking rings and reactions wheel. I suggest to toggle off all reaction wheels of your station or base.
• Clipping : Clipping parts may induce some phantom forces (that reaction wheel will try to counter act)
• Landing struts and wheels : The new struts and wheel are kind of buggy and can induce jitter or phantom forces.

As for a solution, I'm considering using octagonal struts  instead of landing gear. I'm always landing at less than 2m/s so I don't need suspension...

Yes, I play 1.1.2. All the reaction wheels are disabled, and there is not much clipping going on, so I guess it's the legs misbehaving. Shame, I'll have to wait until the bug is sorted out, I guess...

 

Such a nice base it was.... Thanks for your thoughts, Warzouz.

Michal.don

 

[Warzouz]

Indeed, that's a huge base. Nice work !

[Just Jim]

My Munbase was doing the same thing for a bit.  After a few seconds it would jump violently upwards and smash back to the ground.  Here's a screenshot.  Please ignore the fuzzy Photoshop effects, that was for the storyline.  But you can clearly see it a few meters off the ground.

But in my case, 1.1.2 seems to have fixed the problem.  I hope they can fix your base as well, it is a nice one!  

[michal.don]

15 minutes ago, Just Jim said:

My Munbase was doing the same thing for a bit.  After a few seconds it would jump violently upwards and smash back to the ground.  Here's a screenshot.  Please ignore the fuzzy Photoshop effects, that was for the storyline.  But you can clearly see it a few meters off the ground.

 

Well, my base doesn't really jump, it sort of starts to move like a snake  Maybe I'll try to undock and re-dock all the parts, maybe the legs could improve. Anyway, thank you both,

Michal.don

[Warzouz]

Yesterday, I was toying with a 7500m/s 750kg probe for Mun hoping to get Gravity science. I used the lightest legs and a Dawn engine. The probe doesn't have any clipping)

After SOME landings (not all of them) the probe was lifting some legs even SAS is not activated. The lift could be quite high, bute there wasn't any jitter (most of the time...)

I noticed that igniting the engine lifting 1m and re-landing usually cleared this issue.

Again, Landing struts are usable but still buggy.

[KocLobster]

I'd advise against docking (maybe). Maybe it's just me, but docking produces extreme phantom forces too, so much so that I have to use hyperedit to counteract it and not lose my ship to Kerbol escape.

Other people have reported this problem but I can't find a bug report anywhere.

Your base looks fantastic by the way. My guess is it's the landing struts, definitely. It's a known bug unfortunately, and I'm not sure what you can do (other than wait forever for the next hotfix which may or may not (prob not) fix these collision bugs). Use an engineer and disassemble all the struts?

Edited May 6, 2016 by KocLobster

[JLE]

It really annoys me that bug, it happened to me a few times on Mun.

Jeb and pals where hanging in the module on Mun's surface. A few real time hours of gaming with other ships, and when I came back I heard a explosion and it disappeared. 

Even though I kept quickloading it was useless... Damn bugs!