Originally Posted by
Tulok
Once you're at 1960's tech it matters very little...
I appreciate the graphs, but if you have access to numbers that would help. I agree it matters very little, but races - esp the TT's are won by very very little. Also, the last few years UCI bikes are heavier than they were, as are the wheels. I would expect a pro riding a WW bike to get up Alpe D'Huez a wee faster than riding his team bike in a TT. The difference in a cassette weight can DQ a rider in a UCI race, so it matters to UCI at least.