On 01/10/2017 05:06 PM, Michael Hechmer wrote:
Probably like a lot of us, I got an email announcing a Jan Hein blog comparing rim & disk brakes. Now, I have almost no experience with disk brakes but much of what I read makes me think they could be a good choice for some bikes. I found myself saying, not my experience, when he compared posted CP and canti brakes. Jan has a phenomenal amount of experience that's hard to challenge, but.... My experience of modulation with good, and I emphasize good, cantis has not been any less than with good CP brakes. The issue of shutter, which he raises with cantis, because they mount lower on the fork than CP brakes, seems, to me, to be related to the skill of the bike builder.
And also, evidently, shudder is particularly common with carbon forks.
Here's my experience with Cantis vs CP brakes. My early Saluki, with Paul's cantis offers excellent stopping power and modulation that is just as good as the Pauls's CP brakes on my Rambouilet. I originally had Pauls posted CP on my tandem with 38 mm tires and converted the frame to cantis in order to go to 45mm and switched to Paul's neo-retros. There is no difference in modulation, the cantis might offer a minute amount of extra braking (when set up properly). However a tandem might not be an exact comparison to braking on a single. The extra mass is huge, but the extra weight in the rear (no offense honey) helps to keep the rear wheel planted and adds to rear braking power.
Quoting from the blog entry: "The problem is that the stiff [cantilever] brake is attached to the flexible fork blades or seatstays, which twist when you brake very hard. This changes the toe-in of the brake pads and results in poor modulation." If you have sufficiently stiff fork blades and seat stays, this won't happen; and if you don't brake "very hard" (which, from what I gather reading his many comments on this, is something most of us never do - at least, not as hard as he does) it won't happen.
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