Brake system

Abstract

A brake system for a vehicle such as a bicycle is disclosed. The brake system may comprise an improved master cylinder assembly configured for adjustment (such as adjustment of the stroke length, stroke start, etc.). The brake system may comprise a caliper assembly with an improved arrangement of flow paths configured to facilitate maintenance (such as to remove/bleed air and/or fluid from the body of the caliper assembly, inspection, etc.); the caliper assembly may also be configured for use with a tool (e.g. configured to fit in body to remove/bleed air and/or fluid from flow paths during maintenance). The master cylinder assembly may be configured (e.g. manufactured/produced, assembled, etc.) so that a setting and/or adjustment of the brake stroke and/or lever action/actuation can be provided by any one independent mechanism or one separate adjustment mechanism (e.g. without any other adjustment mechanism) or by a combination of adjustment mechanisms (e.g. in a combination with one or more adjustment mechanism); operation of a mechanism for setting and/or adjusting the brake stroke (e.g. travel of piston) may comprise engagement of a pushrod; the mechanism may comprise a feature configured to engage the pushrod (e.g. by direct action on the pushrod or a feature of the pushrod or by indirect action through a link, adjuster, etc. configured to engage the pushrod). The master cylinder assembly may be configured to be set and/or adjusted/tuned within the indicated range to provide an intended performance and/or 'feel' for the operator at the brake lever (e.g. at an adjuster, link, etc.).