SuspensionAnalyzer - Rally Stage - Citroen C4 WRC

Suspension force and travel analysis

Sample Data

Attribute	Value
Source	motec
Category	rally_stage
File	`/Users/mhild/src/durandom/racing/b4racing/packages/source-motec/tests/fixtures/telemetry-NGP-Car_5-Citroen_C4_WRC-Stage_230-20260122_130000.ld`

Available Channels (30): brake, brake_layer_temp_fl, brake_layer_temp_fr, brake_layer_temp_rl, brake_layer_temp_rr, brake_temp_fl, brake_temp_fr, brake_temp_rl, brake_temp_rr, brake_wear_fl, brake_wear_fr, brake_wear_rl, brake_wear_rr, clutch, damping_force_fl, damping_force_fr, damping_force_rl, damping_force_rr, distance, engine_temp, gear, handbrake, lap_distance_pct, lat_accel, long_accel, pitch, position_x, position_y, position_z, roll

Configuration

Setting	Value
Slice Type	`lap`
Metadata Only	False
Required Channels	time

When to Use

User asks about suspension behavior
User wants to understand spring/damper forces
User asks about suspension balance

Key Options

Option	Description
`include_travel`	Include suspension travel analysis (default: True)

Sample Output

Subjects Analyzed: 1 Context: Rally stage data

Default

Options: include_travel=True

Metrics Summary

e240d0597bb22cc0 (RSF driver)

Metric	Value
Front Rear Balance	0.929
Left Right Balance	1.02

Raw JSON output

{
  "metrics": [
    {
      "subject_id": "e240d0597bb22cc0",
      "driver_name": "RSF driver",
      "wheels": [
        {
          "position": "fl",
          "spring": {
            "min_n": 835.3200073242188,
            "max_n": 12816.2998046875,
            "avg_n": 3683.7674602071443,
            "range_n": 11980.979797363281
          },
          "damping": {
            "min_n": -21842.099609375,
            "max_n": 11536.900390625,
            "avg_n": 41.55993610038153,
            "range_n": 33379.0
          },
          "strut": {
            "min_n": -27769.69921875,
            "max_n": 388.7340087890625,
            "avg_n": -3668.593937496166,
            "range_n": 28158.433227539062
          },
          "rollbar": {
            "min_n": -1515.989990234375,
            "max_n": 1399.0,
            "avg_n": 26.386427494215727,
            "range_n": 2914.989990234375
          },
          "avg_travel_mm": 178.92400222966293,
          "max_travel_mm": 257.43499398231506
        },
        {
          "position": "fr",
          "spring": {
            "min_n": 963.0369873046875,
            "max_n": 14622.900390625,
            "avg_n": 3592.6102995912233,
            "range_n": 13659.863403320312
          },
          "damping": {
            "min_n": -31735.099609375,
            "max_n": 12770.2998046875,
            "avg_n": 39.87738384264343,
            "range_n": 44505.3994140625
          },
          "strut": {
            "min_n": -38468.80078125,
            "max_n": 459.15899658203125,
            "avg_n": -3526.346463288565,
            "range_n": 38927.95977783203
          },
          "rollbar": {
            "min_n": -1399.0,
            "max_n": 1515.989990234375,
            "avg_n": -26.386427494215727,
            "range_n": 2914.989990234375
          },
          "avg_travel_mm": 180.68304375337902,
          "max_travel_mm": 251.677006483078
        },
        {
          "position": "rl",
          "spring": {
            "min_n": -1.594849944114685,
            "max_n": 15074.0,
            "avg_n": 3959.901376455454,
            "range_n": 15075.594849944115
          },
          "damping": {
            "min_n": -20002.900390625,
            "max_n": 13647.2998046875,
            "avg_n": 47.94361709658703,
            "range_n": 33650.2001953125
          },
          "strut": {
            "min_n": -28006.599609375,
            "max_n": 584.1409912109375,
            "avg_n": -3933.9185442611965,
            "range_n": 28590.740600585938
          },
          "rollbar": {
            "min_n": -1856.43994140625,
            "max_n": 1059.219970703125,
            "avg_n": 21.96095924583702,
            "range_n": 2915.659912109375
          },
          "avg_travel_mm": 173.759434017605,
          "max_travel_mm": 305.9940040111542
        },
        {
          "position": "rr",
          "spring": {
            "min_n": -1.7421300411224365,
            "max_n": 15074.0,
            "avg_n": 3868.6182353559375,
            "range_n": 15075.742130041122
          },
          "damping": {
            "min_n": -34418.6015625,
            "max_n": 13794.7001953125,
            "avg_n": 36.54470538066317,
            "range_n": 48213.3017578125
          },
          "strut": {
            "min_n": -40229.3984375,
            "max_n": 587.4860229492188,
            "avg_n": -3810.1127126110705,
            "range_n": 40816.88446044922
          },
          "rollbar": {
            "min_n": -1059.219970703125,
            "max_n": 1856.43994140625,
            "avg_n": -21.96095924583702,
            "range_n": 2915.659912109375
          },
          "avg_travel_mm": 175.22359886885775,
          "max_travel_mm": 305.9940040111542
        }
      ],
      "front_rear_balance": 0.9294704644822028,
      "left_right_balance": 1.0244517777281472
    }
  ],
  "metadata": {
    "analyzer": "suspension_analysis",
    "title": "Suspension Analysis",
    "subjects_analyzed": 1
  }
}

Example Calls

How is my suspension working?

analyze(analyzers='suspension_analysis', event='...')

Analyzes all suspension forces and calculates balance

Generated from b4racing.analysis.analyzers.suspension_analysis.SuspensionAnalyzer

Sample Data​

Configuration​

When to Use​

Key Options​

Sample Output​

Default​

Metrics Summary​

Example Calls​

How is my suspension working?​