Behind the barriers - Campbell Waddell
Oct 18, 2026 · 1h 4m
Summary
Host Matt and guest Dr. Campbell Waddle discuss the intersection of tire performance and track surface engineering. Waddle explains his friction mapping technology and introduces TrackWalk, a digital platform that automates circuit safety compliance and incident reporting. The conversation covers the complex science of asphalt textures, including how micro and macro textures influence tire wear and grip. They also explore why "rubbering in" a track involves a super-cleaning effect rather than just adding rubber, and why standardizing surfaces is impractical due to the dynamic nature of F1 r…
Topics discussed
Sponsorships and show introduction
Welcome to Behind the Barriers and guest intro
How the host and guest met
Introduction to TrackWalk software
Automating incident reporting and compliance
User interface and stakeholder reporting
Duty of care and the Lewis Hamilton door story
PhD research on racetrack grip and origins
Friction testing devices and grip mapping
Technical explanation of friction measurement
Wet vs dry testing and data variation
Track evolution during a race weekend
The 'super cleaning' effect of rubbering in
Tire-surface interaction and lap time
Asphalt variations and tire temperature spikes
Defining asphalt, microtexture, and macrotexture
Tire wear, degradation, and heat generation
Balancing grip and tire compound selection
Bahrain's positive texture and racing dynamics
Why standardizing track surfaces is difficult
Monaco asphalt failure and construction issues
Forces on tires and surface delamination
Cost and material constraints of resurfacing
Paving timelines and weather effects
Bitumen blinding and cold weather issues
Bitumen softening points and surface temperature
TrackWalk clients and closing remarks
Sponsorship for Zen Nicotine Pouches
Sponsorship for LinkedIn Ads
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