Unstable Heavy Lift Vehicle

[shadragon]

Tried rerooting to a new probe core I put under the large decoupler. Didn't work after several attempts, so I removed the lander, put it right side up and used the existing core on top. Blue on the ball. @Aegolius13 I didn't notice the brown on the nav ball. DOH. That was a huge clue. 

The launch now works so well I took off the heavy rockets and replaced them with medium tanks and engines. Simplified the build dramatically and lightened things up by many many tons. Oh, and the fairing is even smaller now as well.

There is a probe and landing pod so I can use this to retrieve wayward stranded pilots. 

Off to the Mun to plant my flag.  

[steuben]

i knew there was a third silly question. does the nav ball point up?

[Aegolius13]

10 minutes ago, shadragon said:

I didn't notice the brown on the nav ball. DOH. That was a huge clue. 

We've all been there, I think.  I had this exact problem on some huge rover/base I was launching, and I went through all kinds of aerodynamic and mass balancing shenanigans before figuring out my own SAS had betrayed me.  

Enjoy the Mun!  

[DD_bwest]

i think its a problem almost everyone has had at least once.   a bunch of my designs start with the lander as a root and upside down at the top,  if i forget to re-root it, ill face palm myself and revert lol