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Car AC, Garmin 955, Specialized TT Face Sock
Episode 154

Car AC, Garmin 955, Specialized TT Face Sock

Endurance Innovation

July 11, 202237m 34s

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Show Notes

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  • 3:00 on when to open your car windows
    • Average vehicle has a CdA of 0.6, so only ~11kW or 14hp used to overcome aerodynamic drag for the average car at 100kph
    • Average vehicle AC units consume 1.5kW - 3.0kW (2 - 4hp). 1.5kW / 2hp costs the equivalent of adding 0.11CdA at 100kph
    • The higher the speed, the greater the CdA hit of opening windows
    • Not much hard Cd data on open windows vs closed windows, but a convertible vs a hardtop delta is 
      • 0.32 Cd for a hardtop and 0.36 Cd for a convertible
  • 13:45 Michael’s first impression of the Garmin 955
    • Solar feature is underwhelming
    • Excellent optical sensor
    • Still full of bugs
    • Very good (seemingly) GPS tracks
  • 25:30 Andrew remembers the Platysense Marlin 
  • 28:00 Speculating about the new Specialized TT helmet face sock