The Kilpatrick Group, PA

Forensic Engineering | Accident Reconstruction | Product Liability Analysis

Motorcycle Accident Reconstruction

Need to speak to an engineer? Contact our team today.

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Since 2003, Gary E. Kilpatrick, PE, DFE at The Kilpatrick Group, PA has been a service provider of forensic engineering in motorcycle crash reconstruction and motorcycle product defect and failure analyses to our legal and insurance clients. Gary is a board certified Forensics Engineer through the National Academy of Forensic Engineers (NAFE) and is a Diplomat Forensic Engineer (DFE). He is a mechanical design engineer who has studied the mechanical engineering sciences of machine design and automotive engineering. He has extensive engineering education, training, skill and experience in motorcycle crash reconstruction and motorcycle safety. Gary has studied the sciences of vehicle crash reconstruction and has certifications through Northwestern University’s Center For Public Safety in motor vehicle crash reconstruction. Gary is an avid motorcycle rider for over 50 years and has advanced motorcycle riders training through the Motorcycle Safety Foundation (MSF). Gary travels throughout the United States for his clients regarding motorcycle crash reconstruction and product defect and failure analyses.


We provide the following forensic engineering services for motorcycles and accidents:

  • Preimpact and Postimpact Velocities
  • Delta-V Calculations
  • Vehicle Principle Direction of Force (PDOF) Calculations
  • Vehicle Energy Calculations
  • Acceleration, Distance, Time Calculations
  • Road/Tire Coefficient of Friction/Drag Factor Measurement and Calculations
  • Angular Momentum, Rotational Energy and Rotational Motion Calculations
  • Critical Velocity and Yaw Calculations
  • Vehicle Falls, Flips and Vault Airborne Calculations
  • Vehicle Rollover Analysis and Calculations
  • Vehicle Dynamic Weight Shift Calculations
  • Vehicle Low Velocity Rear-End Collisions Analysis and Calculations
  • Vehicle Trajectory
  • Cause Analysis
  • Lamp Analysis
  • Human Factors
  • Engineering Dynamics Corporation Vehicle Accident Reconstruction Dynamics Simulation and Animation
  • Vehicle Inspections For Defects and Non-Conformance
  • Defective Vehicle Component Determination
  • Catastrophic Component Failure Determination
  • Engine, Drive Train, Frame, Brake, Wheel, Steering System, and Suspension System Component Failure Analysis
  • Motorcycle Handleability Testing and Analysis (Rake and Trail)
  • Motorcycle Safety
  • Standard of Care


Gary has been an avid motorcyclist since 1969. He has obtained advanced motorcycle rider’s training through the Motorcycle Safety Foundation (MSF). Gary is a member of the American Motorcyclist Association (AMA) and the Harley Owners Group (HOG). Gary has owned many motorcycles over the years. Below we have a few of the numerous motorcycles that Gary has owned or currently owns and rides: 2012 Harley Davidson CVO Road Glide Custom and a 2007 American Ironhorse Texas Chopper.