doesn't come close to a narrow tire, tiny tubed steel rim braked bike. they lie thtrough their teeth imo
and let's not even fet into fatter, lower pressure tires are faster argument. crap in crap out, as they say
Mike Barry Sr.
https://mariposabicycles.ca/2016/01/17/campagnolo-and-the-double-spring-derailleur/?srsltid=AfmBOorDBH0yeSy-LtHMAs591Aa9LJr88KXhA_gmfVgrBQr9zKmTsiKO