HandbrakeAnalyzer - Circuit Session - Lime Rock MX-5

Handbrake technique analysis: timing, duration, steering coordination

Sample Data

Attribute	Value
Source	garage61
Category	circuit_lap
File	01K451BYJ64G0T2GPQ44AKXC86

Available Channels: LongAccel, VertAccel, YawRate, abs_active, brake, clutch, drs_active, gear, lap_distance_pct, lat_accel, latitude, longitude, position_type, rpm, speed, speed_kph, speed_mph, steering, throttle, time, track_pct, yaw

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Configuration

Setting	Value
Slice Type	lap
Metadata Only	False
Required Channels	steering, time

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When to Use

• User asks about handbrake technique
• User wants to know if they're using handbrake correctly
• User asks about hairpin or tight corner technique
• User wants to improve rotation skills

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Key Options

Option	Description
lap_selection	all
quick_pull_threshold_seconds	Max duration for good technique (default: 0.5s)
steering_window_seconds	Window to check for steering-first (default: 0.3s)

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Sample Output

Subjects Analyzed: 1

Default Threshold

Options: quick_pull_threshold_seconds=0.5

{
  "metrics": [
    {
      "subject_id": "01K451BYJ64G0T2GPQ44AKXC86",
      "driver_name": "Marcel Hild",
      "handbrake_count": 1,
      "quick_pull_count": 0,
      "steering_first_count": 0,
      "technique_score": 0.0,
      "quick_pull_pct": 0.0,
      "steering_first_pct": 0.0,
      "avg_duration_seconds": 0.9979729085350068,
      "avg_steering_coordination": 0.5,
      "technique_formatted": "0%",
      "quick_pull_formatted": "0%"
    }
  ],
  "handbrake_events": {
    "01K451BYJ64G0T2GPQ44AKXC86": [
      {
        "distance_m": 0.0,
        "time_seconds": 0.0,
        "duration_seconds": 0.9979729085350068,
        "max_handbrake": 1.0,
        "steering_at_pull": -0.008717401,
        "steering_delta": 0.021500822,
        "is_quick_pull": false,
        "is_steering_first": false
      }
    ]
  },
  "metadata": {
    "analyzer": "handbrake_analysis",
    "title": "Handbrake Analysis",
    "subjects_analyzed": 1
  }
}

Metrics Summary

Metric	Value
Subject: 01K451BYJ64G0T2GPQ44AKXC86	Marcel Hild

Strict Quick Pull

Options: quick_pull_threshold_seconds=0.3

{
  "metrics": [
    {
      "subject_id": "01K451BYJ64G0T2GPQ44AKXC86",
      "driver_name": "Marcel Hild",
      "handbrake_count": 1,
      "quick_pull_count": 0,
      "steering_first_count": 0,
      "technique_score": 0.0,
      "quick_pull_pct": 0.0,
      "steering_first_pct": 0.0,
      "avg_duration_seconds": 0.9979729085350068,
      "avg_steering_coordination": 0.5,
      "technique_formatted": "0%",
      "quick_pull_formatted": "0%"
    }
  ],
  "handbrake_events": {
    "01K451BYJ64G0T2GPQ44AKXC86": [
      {
        "distance_m": 0.0,
        "time_seconds": 0.0,
        "duration_seconds": 0.9979729085350068,
        "max_handbrake": 1.0,
        "steering_at_pull": -0.008717401,
        "steering_delta": 0.021500822,
        "is_quick_pull": false,
        "is_steering_first": false
      }
    ]
  },
  "metadata": {
    "analyzer": "handbrake_analysis",
    "title": "Handbrake Analysis",
    "subjects_analyzed": 1
  }
}

Metrics Summary

Metric	Value
Subject: 01K451BYJ64G0T2GPQ44AKXC86	Marcel Hild

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Example Calls

How is my handbrake technique

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

Analyzes handbrake timing, duration, and steering coordination

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Generated from b4racing.analysis.analyzers.handbrake_analysis.HandbrakeAnalyzer