I'm looking at two different racers. same wingspan, weight, and aerodynamics, for the most part. one has a fuselage 9 inches longer than the other. which one is better suited for racing?

What do you mean by better suited?

I don't think you can ink that one out on paper and find an answer. I would believe you would need to try both and see which better suits your flying style. In theory the plane with the shorter fuse will prolly turn faster and some say pylon racing is a turning game.

i mean, wont turning faster result in extra loss of speed?