Originally Posted by piwonka
is this because the top tube is a bit longer in relation to the seat tube on a track frame than on a road frame ?
no. generally speaking, the rear triangle is smaller, the fork has less rake, therefore the wheelbase is shorter. the seat tube and head tube angles tend to be steep, in the 74*-76* range. this allows for more manuverability, it also places the rider farther forward of the bottom bracket, which allows the rider to get a greater amount of leverage on the bars while retaining a low center of gravity and maintaining a position that maximizes aerodynamics and power output from the leg muscles. the bottom bracket is higher for clearance on banked velodrome tracks.