So I'm about halfway through my first track season and am hooked (after many years of road cycling).
I've got a really nice set of custom mid profile alloy wheels that currently I'm both training and racing on. This past weekend I rode in the state titles and was given a set of Zip 303's with Vittoria pista tubulars and could feel a significant difference.
So there are some a number of significant races in the season, and I'm thinking about getting the guy who does my wheels to build me a set of nice carbons for the track. I've got two options.
a) 50mm on the front and 85mm on the back (20/20 with cx-rays)
b) 50mm front and back (20/24 with cx-rays)
I'm starting to focus on pursuits and scratch races though also omniums and points racing. The track I live nearest to in Sydney is 250m (boards) and has 42deg banks fwiw.
Would you take the 50 or the 85 in the rear and why? I'm leaning towards the 85's which would be built around an X-treme rim.
I could be totally wrong on this, but from what I understand by the time the wind gets to your rear wheel it's already a total "mess" - lots of unpredicatable vortices caused by your front wheel, your legs and your cranks. Therefore the aerodynamic properties of your rear wheel don't matter as much as the aerodynamic properties of your front wheel.
In other words, go with what's stiffer or what's cheaper.