{
  "scope": "Static unregistered formed front-plate construction, not actual-car mounting/loaded support or clearance validation.",
  "source_groups": 7,
  "valid_positive_step_solids": 38,
  "formed_plate_connected_solids": 1,
  "central_original_plate_geometry_held": true,
  "unchanged_mount_bracket_rubber_and_fixing_mesh_groups": [
    "front_left_frame_bracket_comparison",
    "front_left_rubber_and_bonded_face_comparison",
    "front_left_separate_fixing_envelopes",
    "front_right_frame_bracket_comparison",
    "front_right_rubber_and_bonded_face_comparison",
    "front_right_separate_fixing_envelopes"
  ],
  "mesh_volume_errors_percent": {
    "front_left_frame_bracket_comparison": 0.0020670292382174438,
    "front_left_rubber_and_bonded_face_comparison": 0.0061457402871223366,
    "front_left_separate_fixing_envelopes": 0.09319161038640056,
    "front_right_frame_bracket_comparison": 0.0023096333379823974,
    "front_right_rubber_and_bonded_face_comparison": 0.006145740251040088,
    "front_right_separate_fixing_envelopes": 0.09319161046816848,
    "front_engine_plate_with_integral_bent_mounting_tabs_comparison": 0.0014094434656941601
  },
  "tab_fixing_passages_open_with_material_witnesses": true,
  "retained_outer_bearing_plane_differences_mm": {
    "left": 0.0,
    "right": 0.0
  },
  "added_material_only_neighbor_contacts_mm3": {
    "added_plate_material__alternator_rotor_claw_pole_architecture_provisional": 507.367214,
    "added_plate_material__alternator_photo_reference_provisional": 2592.786286,
    "added_plate_material__steering_column_retained_axis_smooth_shaft": 1038.907578,
    "added_plate_material__front_structure_left_damper_platform_web_comparison": 1350.534933,
    "added_plate_material__front_structure_right_damper_platform_web_comparison": 2349.95671
  },
  "unchanged_source_sha256": {
    "midget-1500-measured-core.json": "3e2577e1688663a6ea3a985091fc8a35bea6d5054514cafac4562973c741cc9e",
    "midget-1500-measured-core.step": "05849788af49defc430885ffedac66589fea076e2c7581197aff29780fed0a39",
    "build_engine.py": "ce11e3ba455052bb6a1e49198884181fb0aab86d371a8b9bb205f601a6c122ba",
    "steering-rack-reference.json": "8422f6fad064fabc2d1fedf9887135b1e5e2632e76087cb00efdff119194ab3b",
    "steering-rack-reference.step": "6d2f3eb033a4fa695ae1ab21da44cf30c4dcc895d160106198a06de654b61e73",
    "front-structure-reference.json": "e4d9a50449ef1d5e68d98949f675da258221a3953ab759821a6a62cf5e83553b",
    "front-structure-reference.step": "37d8dd6b43212f75f27f2996d5203070c8b15cc93909df30bd1ee7950bab5052",
    "front-wheelhouse-reference.json": "57d1ca47dc78ba0c0701419fd2eed09bd71ca615280dff0e76af8504fa87a7af",
    "front-wheelhouse-reference.step": "d069970ca55d457bf54d635d3e09405a155683d692928e2b7267b6fb8695e1b6",
    "front-footwell-reference.json": "9c392f41f7b9706c9f1f302a276a64837d43805ade367787c173b50c66e0e3e7",
    "front-footwell-reference.step": "f84bbdbb7ab418fc825bc04fbe0c862dcd9b2f80075e38c18efaf6ceeb4eb559",
    "rear-power-support-reference.json": "336cce212478675f295870a35b1027e788ae212fd73aa87b000ed6d7cce0d1cc",
    "rear-power-support-reference.step": "5e8dc7b847f532818d6ee1497d33b4b4fff3083d21439b585c899ea8dacd387e"
  },
  "construction": {
    "factory_source": "https://www.spridgets.de/downloads/Parts-1977.pdf#page=61",
    "factory_variants": [
      "215372",
      "TKC1830 USA/Canada"
    ],
    "fitted_identity_verified": false,
    "central_source_plate_geometry_held": true,
    "source_engine_transform_held": true,
    "formed_plate_single_connected_solid": true,
    "mount_axis_stations_held": true,
    "plate_gauge_mm": 3,
    "inside_bend_radius_mm": 6,
    "foot_gauge_previous_mm": 10.160000000000002,
    "limits": "One whole plate comparison replaces four separate foot/outrigger records. Original central plate profile, crank/cam/timing/alternator bores and every mount/frame datum stay. The3mm tabs,6mm inside bends, joining bands and clipped rear tongues are unmeasured construction choices. Factory drawing and IMG7041 support formed architecture, not these exact shapes, a fitted plate identity or a fabrication template. No weld, detachable-foot joint or loaded support is inferred."
  },
  "construction_datums": {
    "left": {
      "bracket_base_holes_body_units": [
        [
          0.34,
          1.065
        ],
        [
          0.38,
          1.065
        ],
        [
          0.36,
          1.2349999999999999
        ]
      ],
      "mount_center_body_units": [
        0.36,
        0.53,
        1.15
      ],
      "foot_center_body_units": [
        0.3142283464566929,
        0.53,
        1.15
      ],
      "outrigger_source_plate_edge_mm": 168,
      "wing_inboard_construction_x_mm": 164,
      "tab_center_x_mm": 266.0466666666667,
      "retained_tab_outer_bearing_x_mm": 267.5466666666667,
      "tab_middle_plane_shift_outward_mm": 3.579999999999984,
      "fold_center_body_mm": [
        258.5466666666667,
        455.08333333333337,
        906.9000000000001
      ],
      "fold_inside_radius_mm": 6.0,
      "plate_gauge_mm": 3.0,
      "flat_plate_z_mm": [
        897.9000000000001,
        900.9000000000001
      ],
      "rear_tab_trim_z_mm": 906.9000000000001,
      "estimated_access_radius_mm": 19.473333333333336,
      "estimated_inboard_fixing_bore_radius_mm": 8.466666666666667,
      "estimated_bonded_face_x_magnitudes_mm": [
        [
          267.5466666666667,
          277.7066666666667
        ],
        [
          331.8933333333334,
          342.0533333333334
        ]
      ]
    },
    "right": {
      "bracket_base_holes_body_units": [
        [
          -0.34,
          1.065
        ],
        [
          -0.38,
          1.065
        ],
        [
          -0.36,
          1.2349999999999999
        ]
      ],
      "mount_center_body_units": [
        -0.36,
        0.53,
        1.15
      ],
      "foot_center_body_units": [
        -0.3142283464566929,
        0.53,
        1.15
      ],
      "outrigger_source_plate_edge_mm": -105,
      "wing_inboard_construction_x_mm": -101,
      "tab_center_x_mm": -266.0466666666667,
      "retained_tab_outer_bearing_x_mm": -267.5466666666667,
      "tab_middle_plane_shift_outward_mm": 3.579999999999984,
      "fold_center_body_mm": [
        -258.5466666666667,
        455.08333333333337,
        906.9000000000001
      ],
      "fold_inside_radius_mm": 6.0,
      "plate_gauge_mm": 3.0,
      "flat_plate_z_mm": [
        897.9000000000001,
        900.9000000000001
      ],
      "rear_tab_trim_z_mm": 906.9000000000001,
      "estimated_access_radius_mm": 19.473333333333336,
      "estimated_inboard_fixing_bore_radius_mm": 8.466666666666667,
      "estimated_bonded_face_x_magnitudes_mm": [
        [
          267.5466666666667,
          277.7066666666667
        ],
        [
          331.8933333333334,
          342.0533333333334
        ]
      ]
    }
  },
  "limits": "Positive volumes are source reconstruction discrepancies. Added-material contacts exclude the unchanged central source plate. A shared outer bearing plane is a drawing relationship, not loaded seating. No engine/body survey, fitted identity, support strength, stop behavior, NA restraint presence or verified removal path.",
  "mounting_extension_contact_comparison_mm3": {
    "alternator_rotor_claw_pole_architecture_provisional": {
      "before_mm3": 507.367214,
      "after_mm3": 507.367214
    },
    "alternator_photo_reference_provisional": {
      "before_mm3": 2592.786286,
      "after_mm3": 2592.786286
    },
    "steering_column_retained_axis_smooth_shaft": {
      "before_mm3": 5351.207371,
      "after_mm3": 1038.907578
    },
    "front_structure_left_damper_platform_web_comparison": {
      "before_mm3": 4573.811641,
      "after_mm3": 1350.534933
    },
    "front_structure_right_damper_platform_web_comparison": {
      "before_mm3": 7890.927254,
      "after_mm3": 2349.95671
    }
  },
  "previous_combined_plate_comparison_connected_solids": 1,
  "interpretation_of_material_change": "The earlier separate foot/outrigger objects could already be fused as one mathematical envelope. This revision replaces their thick abrupt source sections with one exported formed-plate part,3mm tabs,6mm radiused folds and revised tangent boundaries. It does not newly prove physical attachment, fitted registration or load transfer.",
  "browser_validation": {
    "nativeMeshes": 7,
    "finiteVertices": 26686,
    "metricPlacementAndPicking": true,
    "retainedEngineWorldSamples": 1946,
    "heldMountAndNeighborBounds": [
      "front-left-engine-bracket",
      "front-right-engine-bracket",
      "front-left-engine-rubber",
      "front-right-engine-rubber",
      "front-left-engine-fixings",
      "front-right-engine-fixings",
      "steering-rack",
      "front-left-footwell-shell"
    ],
    "centralPlateDrawnOnce": true,
    "sourceFailurePreservesOriginalEnginePlate": true,
    "allAssembliesReady": 74,
    "isolation": true,
    "legacyFootLinkRedirect": true,
    "productionReloadWithoutHooks": true,
    "pageErrors": []
  },
  "retained_source_baseline_commit": "50ca1b74"
}