Jump to content
  • 11

Wheel physics not behaving with environment as expected [wheels lack friction]


Drathfox

Bug Report

Reported Version: v0.2.0 (latest) | Mods: Custom Flags | Can replicate without mods? Yes 
OS: Microsoft Windows 10 | CPU: Intel Core i5-10400F CPU @ 2.90GHz | GPU: NVIDIA GeForce RTX 3060 | RAM31.93 GB

 

Severity: low-med
Frequency: high
Description:

Rover wheels behave as if they lack friction when parked on the surface (this is all tested on Kerbin in various biomes)
with the brakes turned on and no input from the player the craft will slowly skid (0.1 m/s). during time warp it will stop the craft from skidding.

The other issue related with this is if the rover's center of mass is not directly in the center (more mass is to the front of the craft in the provided screenshot) there is a directional force that isn't just pulling the rover straight down but also makes the craft skid towards the center of mass thus causing the craft to gradually accelerate on its own. It does seem that the runway is uneven but even with that I've positioned the rover in many directions, toggled breaks on, timewarped to pause physics and resumed to 1x speed and the craft will still skid towards its center of mass.

Player attempted solution:

Tested with a kerbal riding in a grumble seat I've toggled and adjusted all sliders in the Parts Manager and increasing the Spring Strength parameter will reduce the skidding the greater the value is while decreasing the value to bare minimum (0.05) you will notice the kerbal is shaking from some unexpected phantom forces on the craft.

 

I expected that there should be some friction to halt the rover completely when parked even if it is on a flat or very slight angled surface.
 

 

 

Included Attachments:

frictionforce.PNG.f3741c3d2407e3fb643d2748d5bf8407.PNG

Edited by Drathfox
adjusting priority to be more reasonable, correcting some exaggerations, and including more details of the issue
Link to comment
Share on other sites

3 answers to this question

Recommended Posts

  • 0

Reported Version: v0.2.0 (latest) | Mods: none | Can replicate without mods? Yes 
OS: win10 | CPU: i710700k | GPU: rtx2060 | RAM32gb

Bane of KSP1, and the reason why ground anchors were invented. Rover, and quite possibly also any vessel with wheels/legs will slide across the ground if there's even a tiny slope. Here encountered on Laythe. Traction settings didn't help.

Included Attachments:

rov.mp4

Link to comment
Share on other sites

Guest
This topic is now closed to further replies.
×
×
  • Create New...