My Cube keeps on rolling.

[El Diablo]

Greetings I have been trying to kinda make Borg Cubes for my space craft and have been succesfull with smaller designs so far.

However my latest vessel always seems to topple over and start spinning uncontrollably for no clear reason as it get's out of the atmosphere fine. but as soon as i decouple to boosters it starts to topple.

i would really like some help solving this isseu

The ship front

Side

some of the panneling temporarily removed to show the innards.

[HoY]

Toppling usually happens if your in the atmosphere and don't have a high enough TWR for your altitude. Generally below 50,000m you want to stay above 1.5, higher than that you can go lower but the higher you can keep it without compromising your craft the better.

Do you have mechjeb or kerbal engineer installed to keep track of your dV and TWR? Or do you know the math to do it yourself(I don't but someone else could point you in the right direction on that)

Edit: looking closer at your screenshot, you are firing all 5 mainsail engines, and burning them all out at once without using any sort of advanced staging. I believe if you add an extra half tank to each of the 5 orange tanks and configure it for asparagus staging it will get you into orbit a little bit easier. I'm just eyeballing it and guesstimating the mass of the cube to be around 30t

Edited May 7, 2013 by HoY

[Slide]

Try placing some radial decouplers with canards on the cube (so you can decouple them off when you're in space) and some tail fins on those tanks. That'll help you keep nice and straight during launches.

[El Diablo]

Thanks for the Help. though alot of it sounds like Abracadabra to me. Just started the the game a few days ago. don't have any mods installed on the base game right now either. Still from what i can gather i might need to add an extra stage to get it higher before decoupling the cube. Right now i decouple the launch stage at about 15km which i though was quite high. but we an go higher i figure.