It's a good podcast!
Ever since I read one of Dave Kirk's posts on his Terraplane design I've been keenly aware of how people were chasing stiffness w/out really knowing why.
My current whip doesn't lunge forward the way other bikes I've owned have (CAADs, CF wonders, etc) but I swear to you it's one of the faster bikes I've ridden. I think part of it has to do with how I can apply a bit of "english" through a tight turn in a way I can't with a stiff-stiff bike.
I think the whole "planing" thing is ridiculous but I do believe that there is optimal stiffness for a rider's power output and weight and I think that was explained rather well.
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