Patent ID: 8876136

Claim:
A bicycle frame, comprising: a chain stay frame member supporting a rear bicycle wheel; a bottom bracket frame member supporting bicycle pedals; a head tube frame member supporting a steerable front fork mounted in a head tube, wherein the head tube is mounted at a head tube angle in the range of about 64° to 71° from the horizontal; an adjustable stem positioned at a top of the head tube, supporting handlebars having a rise and range of handle bar angle adjustment; a straight, curved or angled seat tube frame member for adjustably supporting a saddle at a range of saddle heights wherein a top of the scat tube is at a first fixed distance rearward of the bottom bracket frame member, wherein a seat tube angle is about 62° to 71° from the horizontal, and wherein a seat tube axis as extended from a saddle insertion point, intersects the chain stay frame member or a horn rearward of the bottom bracket frame member at a second fixed distance about at or within a radius of a circle of revolution of the pedals; and one or more interconnecting tube frame members interconnecting the head tube, seat tube and chain stay frame members and the bottom bracket frame member.