Originally Posted by
AlmostTrick
I agree with your theory somewhat, based on my observation from the other end of the scale. At 135 I've never felt any frame flex, and don't see how the tiny bit a certain frame may "give", even with a larger rider on board, could make any difference in comfort. It's all about the tires and tire pressure.
"Frame compliance" and other such terms are just a way to sell more bikes.
What you might be surprised to know is that I couldn't be more surprised at how much comfort my Supersix EVO provides. Same goes for the 2015 Specialized Tarmacs I demo'd earlier last year. Having ridden anywhere between 190 and 205lbs, I'm definitely a heavier rider and I would suspect that influences the frame's ability to flex as designed, but it definitely does it.
I've said this before.....I don't think there even needs to be a Synapse or Roubaix. The "comfort" versions offer (to me) little more than a higher bar position that could just as easily be achieved on a Tarmac or EVO with steerer/stem/bars because the EVO & Tarmac already have such a cushy ride, it often STILL surprises me sometimes.
Originally Posted by
Doge
Sure - weight and power matter a bunch as does the type of riding you do.
I got a Raleigh 753 Team the year it won the TdF when I was a moderately fit 200#, 6'2". It was a noodle, but so great to ride - it was my primary bike. The bike I raced on at the time was about 3# heavier Columbus SP. I could not really bend that thing. Now - older and heavier I ride a Cannondale Six13. The bike impresses me. I buy all this cool stuff for my son, but the Six13 works.
Along these same lines......The Six13, Supersix, EVO, CAAD10, 12, etc. etc......The design hasn't changed much in the last several years on C'dale's top bikes. The Six13 looks almost identical to even the latest EVO's from HT, TT, DT, seat stays ,chainstays, etc. etc. Small improvements here & there, I'm sure, but they still look basically the same. (whereas a Tarmac & EVO look nothing alike). So your observations are certainly right on..........again....at least for us heavier riders.