bathroom scale method puts my 531 tarck bike at 19lbs. its 59cm c-c with aluminum nitto junk on it. no carbon anywhere, guarantee my 531 fork weighs 3-4 pounds (im pretty sure when you strip any bike down to the frameset, outside of the worst alloys ever, the fork always outweighs the rest of the frame by a long shot). have never had it properly weighed, but a friend just today told me i can bring my bikes to his workplace that has a big floor scale for shipping/filling drums with chemicals, and its very accurate. we shall see. and no, i dont put any stock in the bathroom scale method. just felt like sharing.