Disc Braking

WHY DISC BRAKE VS RIM BRAKE?

• Safety first:
  • No rim dam­age (spe­cially car­bon clincher beat or glue on tubular)
  • No pres­sure changes inside the tire (blow off the car­bon clincher)
• Same brak­ing per­for­mance in any condition
• Less rotat­ing iner­tia (rim weight sav­ing, moved the mass toward the rotat­ing axis)
• No weight penalty
• Aerodynamic and clean look­ing on front side
• Can run even on a non-straight rim (i.e. spoke failure)
• History of MTB already tells the way to go

Colnago’s disc brake fea­tures: higher piv­ot­ing, speed-lock avail­able (inter­nal rout­ing), wide range of lever reach adjust­ment, fin­ger clear­ance on top posi­tion (fore­fin­ger can hold the grip).

WHY HYDRAULIC DISC BRAKE INSTEAD OF MECHANICAL ACTUATED (CABLE)

• Weight sav­ing:
  • Hydraulic caliper is so much lighter (mechanical’s needs camshaft and rolling balls, exter­nal lever and slid­ing system)
  • Cable rout­ing: hydraulic hoses are super light com­pare to mechan­i­cal cable and hits rout­ing. Hydraulic hoses flex­i­bil­ity can’t be com­pare with mechanicals
• Much bet­ter behav­ior in dirty con­di­tions (i.e. cycle-cross)
• Self-pad’s wear­ing com­pen­sa­tion on hydraulic disc brake (mechan­i­cal needs to be hand adjusted often)
• Pistons on hydraulic caliper has a dou­ble sym­met­ric action (on mechan­i­cal only one pis­ton is mov­ing and bend the rotor toward the other, reduc­ing dras­ti­cally the rotor life in high tem­per­a­ture and torque stress)