Soil Draft Physics v1.0

Soil Draft Physics v1.0

Your tractor finally feels the soil. Implements pull harder in heavy wet clay than in dry sand, and tyres grip according to their size, load and pressure.

– Realistic implement draft (ploughs, rippers, cultivators, discs, seeders) based on agricultural standards
– Uses Precision Farming soil types and soil moisture (works without PF too)
– Tyre traction and rolling resistance from real tyre sizes, wheel load and pressure
– Automatic tyre pressure by axle load, with CTIS support in 4×4 Traction System
– Clean, movable HUD (Ctrl+Shift+H show/hide, Ctrl+Shift+M move)

Beta version – feedback and log.txt are welcome!
Implement draft and tyre traction based on real soil, using agricultural engineering standards (ASABE D497 draft and Brixius traction).
– Draft force per implement type (plough, ripper, subsoiler, cultivators, disc harrow, seeders…), width, depth, speed
– Precision Farming soil types (sand → silty clay); works without PF using a medium soil
– Soil moisture per soil type (sand dries fast, clay stays heavy for days)
– Tyre/soil traction from real tyre sizes (e.g. 710/60R38), wheel load and pressure; rolling resistance in soft soil
– Tyre pressure from real axle load; CTIS support with 4×4 Traction System (VarioGrip style), fixed pressure on tractors without CTIS, tracks supported
– Replaces the game’s own draft force (no double counting)
– HUD: Ctrl+Shift+H show/hide, Ctrl+Shift+M mouse to drag it anywhere
– Settings: modSettings/FS25_SoilDraftPhysics.xml (intensity, traction scale)

BETA: feedback and log.txt welcome. Not recommended with Mud System Physics or Tractor Terrain Dynamics (tyre grip is handed over to them automatically).