SAS making my rockets spin uncontrollably

[Robin]

Every time I put sas on my rockets start spinning, only if rockets are thrusting, if i disable it the spinning stops and i can go in a straight line. It even happens in vacuum, i tried using only stock parts but wont help either, any idea what could cause this?

It doesnt really matter if im already in orbit as i can manuver it myself, but it is making launch impossible to achieve.

This is an example:

My hawk heavy, aerodinamic af, CoM & CoT are good, tried changing a lot of parts, and finally put it to orbit with cheats to see if it was an aerodinamics thing. Nope, even with only the central core(notice the stock rocket) wont let you keep a straight line with SAS.
http://steamcommunity.com/sharedfiles/filedetails/?id=1305545063

Good bye boi, not even 1k m:
http://steamcommunity.com/sharedfiles/filedetails/?id=1305545277

Thanks in advance

[Robin]

Okey nevermind, it seems like if you put the Probe upside down and put SAS on, it doesnt know what to do aparently. Coincidently I tried with rockets that had this too. I just had to put the command module the other way around.

[WhiskeyJim68]

Originally posted by Robin:

Okey nevermind, it seems like if you put the Probe upside down and put SAS on, it doesnt know what to do aparently. Coincidently I tried with rockets that had this too. I just had to put the command module the other way around.

That was my theory....was about to test it before I saw this. Glad you got it worked out.

[Robin]

Originally posted by CaptainTightPants:

Originally posted by Robin:

Okey nevermind, it seems like if you put the Probe upside down and put SAS on, it doesnt know what to do aparently. Coincidently I tried with rockets that had this too. I just had to put the command module the other way around.

That was my theory....was about to test it before I saw this. Glad you got it worked out.

Well, thank you anyway. Its interesting that this happens nonetheless.

[maculator]

You can see it on your navball. The "redish" half-sphere symbolises the ground.... just check if your navball shows the blue one before you launch and you'll be fine. Flying with the probe core attached the wrong direction will cause you all kinds of trouble later on. And it's especially important to get the orientation right with rovers!

[Robin]

Originally posted by maculator:

You can see it on your navball. The "redish" half-sphere symbolises the ground.... just check if your navball shows the blue one before you launch and you'll be fine. Flying with the probe core attached the wrong direction will cause you all kinds of trouble later on. And it's especially important to get the orientation right with rovers!

It is in fact a rover(well checked)+a lander/skycrane, the problem was in the lander, which is upside down, and i did not know that causes SAS to go nuts. Thanks for the answer :)

[maculator]

If you got multipe probe cores on you rocket you can right click one that is not upside down and select "control from here", that should switch your navball to the normal position again.
And when you landed your rover, or even better; before you put your rover on the rocket, check if its navball shows you the horizon! Otherwise you miiiight get problems driving it.

[maculator]

But since you got your answer allready I might just abuse this thread a bit:
That FMRS you are using, is it worth a try? Does it work as intended?

[Robin]

Originally posted by maculator:

If you got multipe probe cores on you rocket you can right click one that is not upside down and select "control from here", that should switch your navball to the normal position again.
And when you landed your rover, or even better; before you put your rover on the rocket, check if its navball shows you the horizon! Otherwise you miiiight get problems driving it.

yeah the rover is checked on its own, i built it, tried it, and then attached it to the rockets. Anyway its good to know that it works if you select the control from here option, i only used that for rendezvous.

Originally posted by maculator:

But since you got your answer allready I might just abuse this thread a bit:
That FMRS you are using, is it worth a try? Does it work as intended?

I havent tried it a lot, but i did a test "Falcon 9" with a landable first stage. Its a bit tricky to use but works like a charm, you just fly the rocket wherever you want as if you didnt have the mod, but the mod saves the points where you change stages. Once you get, lets say, orbit(keeping in mind that at that point the first stage have crased), you click on the FMRS first stage decoupling save point, it goes there but now you land that fist stage(the main rocket will crash but dont mind that), when you finish you can just "merge" both and voila, you have a landed first stage and a satellite in orbit.

As said, havent tried much of it as I installed it yesterday, but if you are planning on doing something like that its definitely worth the try.

Thanks again, im just a bit newbie in KSP :p