Tripolith

Ok! I removed that KER part and my rocket now keeps straight at 90 degrees! Thanks for all your help!

My engine has a gimbal and the reason I am not using active fins is because I am not advanced enough in the tech tree. The thing that looks like an Ox-Stat is in fact this one part from the KER plugin mod. Could that cause the unwanted turn? In the old pre 0.90 version these small massless parts didn't have much of an impact. Will indeed need to get used to the new KSP. I will try this tomorrow without that part and will see what happens! Thanks!

Thanks for all your responses. This is the rocket that wouldn't stay on a 90 degree heading. The first stage is a LV-T45 and the second, upper stage is a LV-909. I have also tried adding more fins at the bottom but the rocket would still not keep at 90 degrees turning to 100+ degrees. Thanks for any help and advice! http://steamcommunity.com/sharedfiles/filedetails/?id=437456296

Hi everyone - being a more casual KSP player, I am still trying to find may way in 1.02 and in particular trying to get things into orbit. Here are two questions and I am thankful for some advice: 1. When I do a gravity turn, how do I keep my rocket at a heading of 90 degrees? I am trying to get into orbit applying the approach described in this video: http://youtu.be/0pA1y5a5rnk The problem I have, however, is that whenever I initiate my gravity turn by turning 5 to 10 degrees east my rocket does not stay on a 90 degree heading. Typically it moves to a 100 to even 130 degrees requiring a lot of of correction steering. I have tried to add fins, but the problem still exists. Is this normal given the new aerodynamic model or do I get something wrong? In this video the yaw, pitch, roll controls on the bottom left of the UI do not suggest that any corrections are required. 2. TWR In pre 1.0 my rule of thumb was always that a rocket needs a TWR greater 1 to lift off. Since 1.0, however, it seems that rockets with a TWR of 1.3 to 1.5 would not lift off any more. I assume that this is due to the new aerodynamic model, correct? Is this because drag adds further thrust requirements? Many thanks for helping me to better understand the new way of playing KSP!