Vessels spinning out of control

[ludan02]

Whenever I switch to my space station, it starts abruptly spinning, despite me not touching the keyboard whatsoever. Even after time-warping, the space station still starts spinning for no reason again. The SAS and RCS are both enabled, and the space station has reaction wheels and RCS thrusters. I have restarted the game twice and still nothing is fixing this. Any advice would be appreciated.

[Papa_Joe]

5 hours ago, ludan02 said:

Whenever I switch to my space station, it starts abruptly spinning, despite me not touching the keyboard whatsoever. Even after time-warping, the space station still starts spinning for no reason again. The SAS and RCS are both enabled, and the space station has reaction wheels and RCS thrusters. I have restarted the game twice and still nothing is fixing this. Any advice would be appreciated.

I have found that sas can actually exacerbate the problem.  Turn off your sas and see if the space station settles down after a restart

 

[Violent Jeb]

[redacted, done contributing]

Edited August 16, 2016 by Violent Jeb

[Nansuchao]

I had a similar issue on a station that had more than one SAS module perpendicular to each other. One was on the main body of the station the other on a side module. I solved deactivating the side SAS.

[ludan02]

On 7/24/2016 at 10:14 PM, Papa_Joe said:

I have found that sas can actually exacerbate the problem.  Turn off your sas and see if the space station settles down after a restart

 

Turning off SAS slowed down the spinning a little, but it didn't completely stop.

On 7/25/2016 at 11:43 AM, Violent Jeb said:

Have you accidentally applied some trim? I do this from time to time. Try hitting mod-x (alt-x in my case) to reset trim and see if that fixes it (you can also see if trim is being applied because your indicator in the bottom right will show a rotational torque (not in the middle)

If not this then I have no idea

I tried turning off the trim, and it didn't work 

On 7/25/2016 at 4:03 PM, Nansuchao said:

I had a similar issue on a station that had more than one SAS module perpendicular to each other. One was on the main body of the station the other on a side module. I solved deactivating the side SAS.

My station does have perpendicular reaction wheels, but disengaging the SAS still didn't stop the spinning

 

 

Sorry about the late replies BTW, I've been kinda busy this week 

[Papa_Joe]

If it slowed down the spinning, then SAS was likely the issue... you may need to apply some small counterthrust to completely stop it... a body in motion tends to stay in motion...

The trick will be when and were to apply... you can just make it worse if not properly applied

 

 

Edited July 27, 2016 by Papa_Joe

[ludan02]

17 hours ago, Papa_Joe said:

If it slowed down the spinning, then SAS was likely the issue... you may need to apply some small counterthrust to completely stop it... a body in motion tends to stay in motion...

The trick will be when and were to apply... you can just make it worse if not properly applied

 

 

It worked!  Now if only I could find out why the SAS is causing this...

[Papa_Joe]

46 minutes ago, ludan02 said:

It worked!  Now if only I could find out why the SAS is causing this...

Excellent.  It is a relic of the past... SAS has been an issue in game for years.  As @Nansuchao said, perpendicular SAS will fight with each other, and create torsional forces on your space station.   Think of it like this.  SAS is a reactional activity, based on relative motion.  so you experience an affect called "chasing the ball" used by flight instructors to denote novice pilots trying to stay at a given altitude by reacting to the altimeter, instead of anticipating it.  

I've built maybe a dozen stations or so.. .some pretty large, across several planets (yes, the hard way, not via hyperedit ), and I had experienced these issues also... so as a rule I now leave  SAS off for stations.

Edited July 28, 2016 by Papa_Joe

[ludan02]

2 hours ago, Papa_Joe said:

Excellent.  It is a relic of the past... SAS has been an issue in game for years.  As @Nansuchao said, perpendicular SAS will fight with each other, and create torsional forces on your space station.   Think of it like this.  SAS is a reactional activity, based on relative motion.  so you experience an affect called "chasing the ball" used by flight instructors to denote novice pilots trying to stay at a given altitude by reacting to the altimeter, instead of anticipating it.  

I've built maybe a dozen stations or so.. .some pretty large, across several planets (yes, the hard way, not via hyperedit ), and I had experienced these issues also... so as a rule I now leave  SAS off for stations.

So it turns out the problem was trim, but KSP was ignoring Alt+X and it didn't reset. The SAS was exacerbating the problem though, and I'll follow your advice and keep it off on stations in the future. Thanks for the help!