Rover going crazy

[fayer3]

KSP Version: 0.90.0.705 Beta Windows 32Bit

What Happens: Rover starts spinning on launch, and lifts off into the air.

Mods / Add-Ons: All stock

Steps to Replicate: load the rover 4.craft in SPH and hit launch

Result:

Fixes/Workarounds:

• removing the cubic octagonal strut with the two seats prevents this problem
  

Other Notes/Pictures/Log Files:

output_log: https://app.box.com/s/iqnla442nksxqni4p220

rover 4.craft: https://app.box.com/s/rdfwfu2mc4ok5bbmyo2e

[Master Tao]

Looks like you have a physicsless part (cubic octagonal strut) as the root part. Try replacing it with something else, like a Not Rockomax Micronode.

Welcome to the forums, and thanks for reading the bug reporting guide.

[fayer3]

Thanks. using the octo2 as root fixes the problem.

but why are these physicsless parts selectable as root when they make these problems?

[vexx32]

Not sure, actually. At present, a lot of parts are physicsless for either very little or absolutely no reason, with very little explanation given as to why. It often looks like they weren't intended to be physicsless, but it was simply overlooked when they copied another part's .cfg file to enter the new part's data in.

Just one of many things we hope to see resolved reasonably soon.

[sal_vager]

They can be safe to use in most cases, but wheels require a rigid body to function, and the physicsless parts do not count as rigid