Abstract: To provide a brake controller and a brake system that appropriately brake a rotary body of a human-powered vehicle, a brake controller includes one or more processors configured to programmatically control a braking portion of a brake device so that the braking portion brakes a rotary body of the human-powered vehicle based on first information related to travel of the human-powered vehicle, the first information excluding a road surface gradient.

Abstract: A control device is provided for controlling for a brake system of a human-powered vehicle that includes a rotary body and a brake device that brakes the rotary body. The control device of the brake system includes an acquisition portion acquiring information related to at least one of the rotary body and the brake device to appropriately brake the rotary body with the brake device.

Abstract: A protective cap is provided for protecting an end portion of a hydraulic hose of a hydraulic bicycle component. The protective cap is configured to be removably coupled to the end portion of the hydraulic hose. The protective cap comprises a head portion and a cord attachment portion. The cord attachment portion has a through hole for attaching a cord to the protective cap.

Abstract: A brake control device and a brake system are configured to appropriately apply a braking force to a rotary body of a human-powered vehicle. The brake control device includes an electronic controller that controls a braking portion electrically driven to brake a rotary body rotating in accordance with traveling of a human-powered vehicle. The electronic controller controls the braking portion in accordance with an operation amount of an operating device and a state related to the human-powered vehicle.

Abstract: A human-powered vehicle system and a control method are provided that reduce power consumption of a detection device. The human-powered vehicle system includes an electronic controller having at least one processor configured to control a detection device provided at a human-powered vehicle to detect an electromagnetic wave having a frequency that is greater than or equal to 30 GHz and excluding visible light. The at least one processor is configured to control the detection device in at least one of a first mode and a second mode that consumes less power than the first mode.

Abstract: A disc brake caliper for applying a braking force on a brake disc rotor configured to be rotatable about a rotational axis. The disc brake caliper comprises an attachment surface and a first threaded hole. The attachment surface is configured to face a pipe portion of a bicycle frame in a state where the disc brake caliper is coupled to the bicycle frame. A first thread bolt is to be inserted in the first threaded hole so as to couple the disc brake caliper to one of the bicycle frame and a base member attached to the bicycle frame, the first threaded hole being provided on the attachment surface.

Abstract: A hydraulic operating system for a small vehicle including a bicycle is basically provided with a base member, a piston, a hydraulic fluid chamber, a diaphragm and a deformation adjustment structure. The base member includes a cylinder bore. The piston is movably disposed in the cylinder bore. The hydraulic fluid chamber is fluidly connected to the cylinder bore. The diaphragm is at least partially defining the hydraulic fluid chamber. The diaphragm is deformed by fluid pressure in response to movement of the piston in the cylinder bore. The deformation adjustment structure is configured to selectively change a deformation condition of the diaphragm between at least two different deformation conditions.

Abstract: An electric brake system that appropriately brakes a rotary body of a human powered vehicle in various situations is applicable to a human powered vehicle and includes a brake device including an electric actuator operated by electric power from a power supply, and a braking portion driven by the electric actuator to brake a rotary body of the human powered vehicle, a state detector detecting a state of the human powered vehicle other than an operation of the brake device performed by a user, and a control unit controlling the brake device so that the braking portion brakes the rotary body based on a detection result of the state detector.

Abstract: A hydraulic operating device for a small vehicle including a bicycle comprises a base member, a mounting structure, an operating member, and a piston. The base member includes a cylinder bore having a cylinder axis. The mounting structure defines a mounting axis linearly extending along the handlebar in a mounting state where the base member is mounted on a handlebar with the mounting structure. The operating member is pivotally coupled to the base member about a first pivot axis between a rest position and an operated position. The cylinder axis is non-perpendicular to the mounting axis as viewed along the first pivot axis in the mounting state. The piston is movably provided in the cylinder bore. The piston is coupled to the operating member to be pulled in response to a pivotal movement of the operating member from the rest position to the operated position.

Abstract: A hydraulic operating system for a small vehicle including a bicycle is basically provided with a base member, a piston, a hydraulic fluid chamber, a diaphragm and a deformation adjustment structure. The base member includes a cylinder bore. The piston is movably disposed in the cylinder bore. The hydraulic fluid chamber is fluidly connected to the cylinder bore. The diaphragm is at least partially defining the hydraulic fluid chamber. The diaphragm is deformed by fluid pressure in response to movement of the piston in the cylinder bore. The deformation adjustment structure is configured to selectively change a deformation condition of the diaphragm between at least two different deformation conditions.

Abstract: A bicycle hydraulic operating system is basically provided with a first base member, a piston, a first operating member, a second base member and a second operating member. The first base member includes a first bicycle fixing structure and a hydraulic cylinder defining a cylinder bore. The piston is movably disposed in the cylinder bore of the first base member. The first operating member is movably mounted to the first base member. The first operating member is operatively coupled to the piston to move the piston in the cylinder bore of the first base member. The second base member includes a second bicycle fixing structure. The second operating member is movably mounted to the second base member. The second operating member is operatively coupled to the piston to move the piston in the cylinder bore of the first base member.

Abstract: A hydraulic bicycle component includes a first section and a first seal rupturing structure. The first section defines a first fluid path. The first seal rupturing structure is disposed in the vicinity of the first fluid path. The first seal rupturing structure is configured to physically rupture a first seal of a first hydraulic hose when the hydraulic bicycle component is coupled to the first hydraulic hose.

Abstract: A bicycle disc brake rotor is provided. The bicycle disc brake rotor includes a friction disc having a center axis and including a first braking surface and a second braking surface. The bicycle disc brake rotor also includes a mounting adapter attached to a bicycle wheel and coupled to the friction disc through a coupling structure, wherein the coupling structure includes a first mating surface pair comprising a first adapter surface and a first disc surface, and a second mating surface pair comprising a second adapter surface and a second disc surface.

Abstract: A bicycle hydraulic operating system includes first and second actuating devices and a hydraulic operated device. The first actuating device includes a first operating member, a first master cylinder and a first master piston. The first master piston moves in the first master cylinder in response to operation of the first operating member. The second actuating device includes a second operating member, a second master cylinder and a second master piston. The second master piston moves in the second master cylinder in response to operation of the second operating member. The hydraulic operated device includes a slave cylinder and a slave piston that is movably arranged in the slave cylinder. The slave cylinder has a slave fluid port that is connected to first and second fluid ports of the first and second master cylinders. Operation of either of the first and second operating members moves the slave piston.

Abstract: A disc brake rotor adapter is configured to detect a rotational state of a bicycle wheel. The disc brake rotor includes an adapter and a magnetism generation device. The disc brake rotor adapter is configured to attach a disc brake rotor main body to a hub of a bicycle. The adapter includes an adapter main body, a magnetism generation portion and an attaching portion. The adapter main body includes an inner portion and an outer portion. The inner portion includes a second spline configured to be engaged with a first spline provided on the hub. The disc brake rotor main body is coupled to the outer portion. The attaching portion attaches the magnetism generation portion to the adapter main body in a manner irrelevant to a fixing function of a fixing member. The fixing member is configured to fix the adapter to the hub.

Abstract: A bicycle hydraulic operating system is basically provided with first and second actuating devices and a hydraulic operated device. The first actuating device includes a first operating member, a first master cylinder and a first master piston. The first master piston moves in the first master cylinder in response to operation of the first operating member. The second actuating device includes a second operating member, a second master cylinder and a second master piston. The second master piston moves in the second master cylinder in response to operation of the second operating member. The hydraulic operated device includes a slave cylinder and a slave piston that is movably arranged in the slave cylinder. The slave cylinder has a slave fluid port that is connected to first and second fluid ports of the first and second master cylinders. Operation of either of the first and second operating members moves the slave piston.

Abstract: A bicycle hose structure comprises a tubular main body and a first electrical conductor. The tubular main body defines a through-hole, an inner peripheral surface and an outer peripheral surface. The through-hole is configured to arrange a force transmitting element provided so as to transmit operating force. The first electrical conductor is provided at least radially inwardly of the outer peripheral surface and has an end portion configured to be electrically connected to a bicycle component.

Abstract: A bicycle-brake-caliper attachment structure comprises a base member. The base member is configured to be coupled to a brake caliper configured to apply a braking force on a brake disc rotor configured to be rotatable about a rotational axis. The base member is configured to be attached to a bicycle frame such that relative position between the rotational axis of the brake disc rotor and the brake caliper is adjustable in a radial direction of the brake disc rotor.

Abstract: A bicycle hydraulic operating system is basically provided with a first base member, a piston, a first operating member, a second base member and a second operating member. The first base member includes a first bicycle fixing structure and a hydraulic cylinder defining a cylinder bore. The piston is movably disposed in the cylinder bore of the first base member. The first operating member is movably mounted to the first base member. The first operating member is operatively coupled to the piston to move the piston in the cylinder bore of the first base member. The second base member includes a second bicycle fixing structure. The second operating member is movably mounted to the second base member. The second operating member is operatively coupled to the piston to move the piston in the cylinder bore of the first base member.

Abstract: A protective cap is provided for protecting an end portion of a hydraulic hose of a hydraulic bicycle component. The protective cap is configured to be removably coupled to the end portion of the hydraulic hose. The protective cap comprises a head portion and a cord attachment portion. The cord attachment portion has a through hole for attaching a cord to the protective cap.