General Cycling Discussion - Question about road bikes and Climbing

I read a number of posts on various web sites including this forum that point out the facts of how well a certain road bike climbs a hill so well and in some cases better than another brand/model of road bike. Where would a particular road bike have an advantage over another road bike in climbing hills?

If the gear ratios are identical and the fit is right for riders what else could be making the difference between one road bike over another climbing a hill other than the "Engine”?

I think its the frame weight and stiffness. To shave off weight, the designer has to take off more material in some places and put the material in other places where it counts. You will see that Cervelo puts their stiffness in the bottom bracket, a big thick gob of material. Stiffness translates into a direct use of energy generated by your legs. When going uphill you really need every pedal stroke to count. In racing its critical but for recreation, its not.

If you go to Cervelo's web site, they have a very good explanation of how they build their bikes.

Thanks cat.:)