84 - Dan Bigham

Endurance Innovation is now on Patreon! Have a peek at our page and show us some love. 4:15 Dan’s interest in the sea level hour record 8:00 sea level vs altitude hour attempts At altitude, reduce aero drag by ~20% to 25% (at world record hour speeds) while only losing 10% of aerobic capacity The higher the speed the greater the benefit of altitude. That is, the faster the event, the higher up you want to go 12:15 at Dan’s speed, 1W saved in his setup = 50m of extra distance in the hour attempt 12:30 the physiological demands of Dan’s hour record A Watts / CdA of 2250, which works out to ~370W @ a CdA of 0.164! Living on your TT bike Train at a race-relevant internal inertia (cadence) The potential role of central nervous system (CNS) fatigue Learning to maintain that optimized position for the duration of the event 24:15 the sitting up vs aero tradeoff when climbing ~15W benefit to sit up vs aero position, which for Dan makes enough of a difference at ~27kph The value of a stretch during a position change is not to be undervalued 28:30 the value of efficient cornering 30:15 the role of CNS fatigue in performance in an hour record attempt Not well understood at present Dan’s group is studying this effect by taking measurement of nerve impulses to the driving muscles over time and looking at changes 36:45 the effect of non-round chainrings 40:00 Dan’s non-aerodynamic optimizations The more aerodynamically optimized you become, the more reason there is to look at equipment A new, secret crank set Drivetrain lubricants, chain, cog and chainring design 51:30 Dan’s aero optimization Skin suits Front ends / cockpits Aero sensors 74:30 some psychological demands of an hour record bid Check out Dan's retail venture WattShop as well as his Instagram page for products and updates on his upcoming hour attempt.