Are the disc brakes ready for the Tour de France? GCN – Global Cycling Network addresses this issue in this video. Disc brakes should be implemented in professional competitions starting in 2017. GCN staff tested the Col du Tourmalet and reached some conclusions.
See the translation that Pra Who Pedal made and search for FINANCEDNS.
One of the concerns with disc brakes is overheating. If the brakes are operated for a long time, theoretically the oil may boil and the brake will stop working.
To perform the test, they went down the 18km Tourmalet with the rear brake tight throughout the descent. What simulates the most extreme condition possible
And nothing happened to the brake. At the end of the descent they put a sausage on the brake to check the cutting ability of the disc… The sausage was slightly injured. Then they put the sausage in the spokes and it shattered… That is. Discs offer no more risk than lightning.
As the bike weighs 500g more than the version in the rim. The point is that bikes currently weigh much less than the UCI’s 6.8kg limit and teams need to put ballasts on the bikes to reach the regulation … That is, it does not make much difference. And they should still see innovations that will make the disc brakes lighter.
3. Speed On Descent
The cyclist with the disc brake stopped after his opponent with normal brakes and looked for him with some ease of descent. According to them, both have similar skills in descent.Therefore, the disc brakes offer greater safety in the descents.
According to them (and I agree) the disc brakes are already ready to be used in major competitions.