Originally Posted by
Dave Mayer
Not how it works. Regardless of the weight limit, you always attempt to shed rotating mass, even if you have to add weight to the rest of the bike. You can add useful weight by making the frame more 'aero'.
Besides, my bikes are not limited to UCI weight limits, nor do I suspect are the bikes of any of the posters here. Why would I want to add an anchor to my bling carbon bike with a pound of unnecessary weight? That is like converting a $8k road bike to a $4k road bike.
Second downside of road discs: the stigma when you show up on a group ride; it screams: 'newb'. Lessee, two such riders showed up on our last group ride. One got ejected off the front of his bike at the first hard stop. The second disappeared on the first climb.
your comment related to Kittel getting rid of discs in the hills. He is subject to UCI rules.
and if rotating weight had such a big effect, he wouldn't be using discs on sprint stages where he has to accelerate that rotating weight.
I totally get not wanting to add weight to a low weight CF bike.
What your missing is my point that one of the reasons pros do it is that there is no weight penalty for them due to an artificially high UCI minimum weight llinit.