Probably in reference to the smaller Track Machine that have slacker angle.
Good job BMC sorted out the geometry nowadays, funnily enough almost exactly how Jack Taylor* built their bicycles.
*all their frame, from track, crit, road to touring, town bike, etc. have the same head angle: 73 degrees, and sometime seat angle (71), the biggest variation is simply the rake/trail of the fork.
Probably in reference to the smaller Track Machine that have slacker angle.
Good job BMC sorted out the geometry nowadays, funnily enough almost exactly how Jack Taylor* built their bicycles.
*all their frame, from track, crit, road to touring, town bike, etc. have the same head angle: 73 degrees, and sometime seat angle (71), the biggest variation is simply the rake/trail of the fork.