How to edit Jbeams from the beginning

Hi , welcome to the community !

Don't worries , after some testing, modifying jbeam could be learn quickly, we have some articles in our wiki that can help: http://wiki.beamng.com/JBeam_Introduction

The best advice i can give you , is to isolate the part you want to modify first , example a new coilover for the cover using a copy of original part, and use the mod folder to make your change . On your mod folder (..Documents / BeamNG.drive / Mods ) you need to have an "Unpacked" folder , you can put here your mod file and tweak it while the game is open to see the results in live .

Code:

"hatch_coilover_F_MYNAME": {
    "information":{
        "authors":"BeamNG",
        "name":"My new Front Struts",
        "value":200,
    },

    "slotType" : "hatch_coilover_F",

    "flexbodies": [
        ["mesh", "[group]:", "nonFlexMaterials"],
        ["hatch_coilover_F", ["hatch_shockbottom_F","hatch_shocktop_F"]],
    ],
    "beams": [
          ["id1:", "id2:"],
          //front springs with soft initial bump stop
          {"beamPrecompression":1.205, "beamType":"|BOUNDED", "beamLongBound":0.0, "beamShortBound":0.19},
          {"beamDeform":70000,"beamStrength":125000},
          {"beamSpring":24000,"beamDamp":0},
          {"beamLimitSpring":201000,"beamLimitDamp":2000},
          ["fh1r","fs1r"{"soundFile":"art/sound/spring_creak.ogg","volumeFactor":5.5,"decayMode":0,"decayFactor":3,"pitchFactor":1,"maxStress":7000}],
          ["fh1l","fs1l"{"soundFile":"art/sound/spring_compress2.ogg","volumeFactor":0.8,"decayMode":1,"decayFactor":5,"pitchFactor":4,"maxStress":600}],
          //harder bump stop
          {"beamPrecompression":1, "beamType":"|BOUNDED", "beamLongBound":1.0, "beamShortBound":0.09},
          {"beamSpring":0,"beamDamp":0},
          {"beamLimitSpring":1501000,"beamLimitDamp":15000},
          ["fh1r","fs1r"{"beamLimitDampRebound":0}],
          ["fh1l","fs1l"{"beamLimitDampRebound":0}],
          //shocks
          {"beamPrecompression":1, "beamType":"|BOUNDED", "beamLongBound":1.0, "beamShortBound":1.0},
          {"beamSpring":0,"beamDamp":2500},
          {"beamLimitSpring":0,"beamLimitDamp":0},
          ["fh1r","fs1r"{"beamDampFast":1200,"beamDampRebound":3800,"beamDampReboundFast":1900,"beamDampVelocitySplit":0.09}],
          ["fh1l","fs1l"{"beamDampFast":1200,"beamDampRebound":3800,"beamDampReboundFast":1900,"beamDampVelocitySplit":0.09}],
          {"beamPrecompression":1, "beamType":"|NORMAL", "beamLongBound":1.0, "beamShortBound":1.0},
    ],
},

This is an exemple of jbeam for Covet front coilover ;


If you need help please feel free to ask here