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Old October 18th 19, 03:14 PM posted to rec.bicycles.tech
Zen Cycle
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On Wednesday, October 16, 2019 at 2:59:37 PM UTC-4, Tom Kunich wrote:

The Pros no longer use disk brake bikes if they believe that their
course will cause flats.


Gee skippy, still getting Andre to do your research, I see.....(hint: he's not very good at it)

Scroll through this photo gallery and you'll see more than half the peloton is using disc brakes:

http://www.steephill.tv/2019/paris-r...hotos/page-01/

so I guess the pros aren't worried about flats at Paris Roubaix?

And then have a same size teammate riding with them so that they
merely change bikes.


not always - Esteban Chaves in the 2019 Vuelta:

https://www.cyclingnews.com/news/for...elta-a-espana/

"Chaves ran into trouble on the climb of the Coll de la Gallina, but Australian teammate Damien Howson was on hand to give his teammate his bike to continue on the climb. However, the saddle height of 1.88-metre-tall [6'2"] Howson was far too high for the 1.64m [5'5"] climber, and Chaves was subsequently forced to change to Tsgabu Grmay's bike, which was slightly better, with the Ethiopean measuring only 1.75m"

Video he

https://www.facebook.com/globalcycli...3074978854737/

The Mavic neutral support cars only carry rim brake wheels since all
of the others are non-standard.


Ah...no..Mavic has been providing disc brake nutral support since at least 2017. This is an image from the 2019 Paris Roubaix, Zoom in and you'll see a pair of disc brake wheels on the back of the motor cycle.

https://rouleur.cc/editorial/wp-cont...9-1024x683.jpg

That picture is from this story on the 2019 Paris Roubaix:

https://rouleur.cc/editorial/not-all...utral-service/

"There is another game-changer for Mavic to consider: disc brakes. In the 2017 edition, Direct Energie, Sunweb, Delko Marseille, five Bahrain-Merida riders and a lone Cannondale-Drapac man (Will Clarke) were on them. “They know a wheel change takes longer, so they can’t really complain,”

Ledingham says of the process, which includes taking the through axle out, aligning the new wheel with the disc and getting the chain on properly. “It’s bound to add around 20 seconds for the rear.” However, disc brakes are here to stay: one Mavic mechanic reckons every team will be using them at Paris-Roubaix within five years."

All this stuff is pretty old news to anyone who actually follows cycling. When was the last time you actually watched a pro race? Based on what you wrote above, it wasn't an time in the recent past.
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