Originally Posted by
gpo1956
Would an average rider riding 50-75 miles a week in semi hilly terrain see a noticeable difference going from a 34 lb bike to say an 18-20 lb bike?
Sure. A 160 pound rider would be nearly 8% faster up the steepest hills on a 20 pound bike than a 34 pound one. On hills where he could only manage 10 MPH before he could go 10.8 MPH, and he'd be nearly 4.5 minutes faster to the summit of a hill that used to take an hour to climb.