Bike design/aerodynamics questions

Triathlon Forum
1

Hello forum,

I have a few more questions for those of you in (or out, for that matter) of the know.

First, does a shorter wheelbase translate into better aerodynamics. I can’t remember where I read this but it seems to make sense to me (althought I can’t articulate why).

Secondly, which carbon/aero forks have the brake hole drilled appropriatly for mounting the brake backwards (aka behind the crown)? Reynolds Ouzo Aero? Jetstream? Alpha Q Aero? Which brake calippers hide the best behind the crown?

Lastly, if wheelbase is not a function of aerodynamics; what disadvantages might stem from a slacker-head-tube-angle(71?)/larger-rake combination(44-48mm)? The idea being that it might result in better weight distribution between the wheels while in the aero position.

Thanks, eddie.

2

  1. Don’t know about aerodynamics, but a shorted wheelbase does mean less rolling resistance.

  2. Reynolds forks need to have the brake mounted on the front.

  3. Read this http://slowtwitch.com/mainheadings/techctr/experiment.html

John

3

You were probably reading about recumbent bicycles. Short wheelbase recumbents have the rider sitting more upright and are less aerodynamic than the long wheelbase recumbents in which the rider is more laid down and thus more aero.

Can’t help you with the other questions.