David Earle


  • 10 years at Praxis Works, Founder and CEO
  • 9 years at Sotto Group, Founder and Owner
  • 5 Years at Santa Cruz Bicycles, Director of Engineering
  • 2 Years at Specialized Bicycles, Senior Design Engineer
  • 7 Years Bontrager Cycles
  • 2 Years at Lockheed Missiles and Space: Engineer
  • 3 Years Creative Machining and Design, Design Engineer

Relevant Design Highlights:

At Sotto Group

  • Developed and Trademarked Sine Suspension as seen on Alchemy bikes
  • Developed ‘Switch’ suspension system.
  • Developed ‘Turntable’ suspension system as seen on Mountain Cycle
  • Inventor on 7 patents pending
  • Inventor on 5 patents granted
  • 6 novel suspension designs currently in patent process
  • Short link design outside of DW-Link and VPP patents
  • Tomac Snyper and Carbide
  • Chainring, crank and Bottom Bracket design
  • 1 patent pending on Bottom Bracket design


  • Engineering Director at Santa Cruz Bicycles
  • Pioneered VPP suspension design at SCB
  • Designed Blur
  • Designed Nomad
  • Co-Designed VP-Free
  • Led engineering team in the evolution of single pivot designs
  • Senior Design Engineer at Specialized Bicycles
  • Specialized Bicycles Road frames Superleggero
  • Specialized CX bike
  • Specialized P3
  • Designed all frames for Festina Road team 2000-2002
  • Engineering Manager Bontrager Cycles
  • Extensive work with Keith Bontrager developing testing machines and methods
  • Bontrager CX Bike
  • Bontrager Ti hardtail
  • Development of many Bontrager components