Drill unit jumping all over?

[strider3]

I am using the exact same drilling unit I used on Minmus in version 1.1...but now, when I deploy the drills, it's hopping up and down and moving slowly laterally...dragging the linked ISDU with it. The landing gear on the drilling unit lift off the surface when the drills are deployed.? Anybody have any idea why this is happening in 1.2?

[Some Kerbal]

I had this issue w little while ago. The drills are mounted too low and the nose of the drill is hitting the ground. 

Try moving the drills up slightly.

[diomedea]

8 hours ago, Victor3 said:

Anybody have any idea why this is happening in 1.2?

From KSP v1.2.2 changelog (in the readme): "* Model fixes to the large drill part."

Colliders were reworked, vessels built with the drill from previous versions will have interaction with terrain due to deployed drills. Rigidbody physics doesn't allow colliders go inside another rigidbody, which makes the vessel jump.

[strider3]

18 hours ago, Some Kerbal said:

I had this issue w little while ago. The drills are mounted too low and the nose of the drill is hitting the ground. 

Try moving the drills up slightly.

 

10 hours ago, diomedea said:

From KSP v1.2.2 changelog (in the readme): "* Model fixes to the large drill part."

Colliders were reworked, vessels built with the drill from previous versions will have interaction with terrain due to deployed drills. Rigidbody physics doesn't allow colliders go inside another rigidbody, which makes the vessel jump.

So, is the answer to completely rebuild my drilling ship using 1.2.2 parts...or, as Some Kerbal stated, simply move the drills up?

Thanks guys!

[diomedea]

1 minute ago, Victor3 said:

 

So, is the answer to completely rebuild my drilling ship using 1.2.2 parts...or, as Some Kerbal stated, simply move the drills up?

Thanks guys!

Moving the drills up would work. My dirty solution to move them up would actually go by editing the drilling vessels in the savegame (find the drill parts, edit the line with "position = ", the coordinates are X,Y,Z with 0 being the position of the root part CoM, the 2nd coordinate or Y position is the distance along the longitudinal axis of the vessel (+ for distances forward, - for backwards) therefore what you should change if drills are aligned with that axis). I would still prefer to rebuild drilling ships (cleanest solution) but sometimes that's just too expensive.

[strider3]

I had enough Funds to move the drills up on my drilling ship and re-launch. It works perfectly now.

Thanks again!