I'll be combining data from my lab on crank length with wind tunnel data shared by a few heavy hitters in aero testing. Here is the current draft of my abstract:

This presentation will focus first on crank length and then on aerodynamics. Research has consistently shown that crank length, across a wide range (145-195mm), does not influence maximal sprint power or efficiency during submaximal cycling. I will present data from several studies from my lab and discuss the underlying muscle physiology and biomechanics to help explain this somewhat controversial notion. Because crank length does not influence maximal or submaximal power, it can become an integrated element of overall bike fit, without concern for compromising performance. Perhaps the most useful application of crank length for bike fitting is in the area of aerodynamics where shorter cranks can open up the hip angle with a low torso position.
In the second portion we will address the factors that most influence aerodynamic drag and explore how aerodynamic drag influences cycling performance. We will begin with wind tunnel data to give realistic ranges of benefits for body position, skin suits, wheels, frames, and other details. We will then explore a number of scenarios using a validated model: Does aerodynamics matter for slower riders? How does drafting affect aerodynamic drag? Does aerodynamic drag matter when climbing? Finally we will address optimizing performance when faced with a “power vs. aero tradeoff”.