{
  "viewer_version": "retail-stock-gearing-r266-2026-10-15",
  "url": "http://127.0.0.1:8095/dist/webgl-city/?debug",
  "browser": "Chrome 150, headless-new, WebGL2 with Vulkan/ANGLE",
  "scene": {
    "status": "City scene ready",
    "region": "L4RA",
    "initial_triangles": 87253,
    "initial_nearby_textures_uploaded": 221,
    "ambient_traffic_disabled": true
  },
  "car": "240SX",
  "source_powertrain": {
    "bundle_chunk": "GLOBALB.BUN 0x34600",
    "record_offset": "0x6c76c0",
    "wheel_radius_m": 0.3135000467300415,
    "stock_gear_count": 5,
    "final_drive_ratio": 4.083000183105469,
    "forward_ratios": [3.321000099182129, 1.902000069618225, 1.308000087738037, 1.0, 0.9000000953674316],
    "rpm_idle": 800,
    "rpm_threshold_1": 6500,
    "rpm_threshold_2": 7000
  },
  "drive_samples": [
    {"seconds_after_throttle": 6.0, "speed_mps": 15.046984206760579, "speed_mph": 33.66, "gear": 1, "rpm": 6215},
    {"seconds_after_throttle": 8.5, "speed_mps": 21.337734206790458, "speed_mph": 47.73, "gear": 2, "rpm": 5047},
    {"seconds_after_throttle": 10.5, "speed_mps": 26.816984206760637, "speed_mph": 59.99, "gear": 2, "rpm": 6344},
    {"seconds_after_throttle": 11.5, "speed_mps": 29.38298420677559, "speed_mph": 65.73, "gear": 3, "rpm": 4780}
  ],
  "browser_errors": [],
  "failed_requests": [],
  "screenshot": "../webgl-city/review/images/391-r266-source-gearbox-rpm.png",
  "limitations": [
    "The source gear ratios and wheel radius drive the displayed RPM calculation.",
    "The automatic shift point interprets the first source RPM threshold; retail shift timing is not runtime-verified.",
    "Acceleration, braking, tire forces, and steering remain approximate viewer physics."
  ]
}