Let 's talk seriously with disc brakes, first of all that has to do with the discs fixed? Got a lot more than it might seem.
The track bike with no brakes and they are many, including myself use them well, but many still want to put a brake, so why not a good record?
Personally, I think, to know how to use a disk can be used safely without mechanical brakes, but if you really want to put the brakes why not install something truly effective in all conditions?
The classic race bike brake is a brake shoe, even the most powerful shoe for a shoe would be better Vbrake MTB.
The caliper is good for narrow tires at most with a little 'fortune there is a 28c, but nothing more.
brakes brake pad on the rim and the first thing that gets dirty is the closest to the ground, then after the tire is the circle of dirt the shoe does not hold, and does not brake noise, except in a few mountain bike grammomaniaci traditionalists all have been using disc brakes on the street are not used mainly because they weigh and normal do not need all that braking power.
I think a fixed mechanical front disc brake with 160mm rotor and 35c tires make much sense, especially in winter, with snow or ice, conditions where, given the risk of falling might be preferable to use the fixed-free pedal which also allow the use of bulky winter footwear, so the brake is indispensable.
The disc requires a hub and a bracket provided, the latter in particular, since the clamp is far from the attack on the frame, is considerable effort not only from the added power, but also affected by higher leverage.
The disc brake is perhaps too complicated and goes against the simplicity of the setting?
And why, if you talk to there is always a mechanical lever, a cable, a sheath, a clamp and shoes / pads, plus there is only the disk, freni idraulici in effetti comportano un po' di sbatti e hanno meno senso su una fissa.
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