Abstract: A bicycle derailleur is basically provided with a base member, a movable member and a connecting structure. The base member includes a bicycle mounting portion. The movable member is movable with respect to the base member between a first position and a second position that is farther than the first position from the base member. The connecting structure movably connects the movable member to the base member. The connecting structure moves the movable member with an actuation ratio that descends and then ascends as the movable member moves from the first position towards the second position.

Abstract: A front derailleur comprises a base member structured to be attached to a bicycle frame member, a chain guide operatively connected to the base member, and an actuation mechanism coupled to the base member and to the chain guide for moving the chain guide relative to the base member between a first position corresponding to a location for positioning a chain on a first sprocket and a second position corresponding to a location for positioning the chain on a second sprocket. The actuation mechanism is configured so that an actuation ratio of the derailleur when the chain guide is located in the first position is greater than or equal to 1.5 times the actuation ratio when the chain guide is located in the second position.

Abstract: A bicycle front derailleur that includes a main body and a chain guide operatively coupled to the main body. The chain guide includes a first plate, a second plate, and a contact member affixed to the first plate. The contact member includes a flexible portion that is adapted to flex when contacted by a chain running through the chain guide.

Abstract: A mounting device for mounting a front derailleur to a bicycle frame. The mounting device includes a mounting portion that is adapted to be adjustably mounted such that it is positioned around an axis that is defined by a bottom bracket of the bicycle frame, and an indicator configured to indicate an orientation of the mounting portion relative to a predetermined direction.

Abstract: A front derailleur is attachable to a bicycle with a frame in which a fixing bore is provided. The front derailleur basically includes a base member, a chain guide and a link mechanism. The base member has an attaching bore for attaching the base member to a fixing bore of a frame by a fastening member. The chain guide configured to guide a chain. The link mechanism movably couples the chain guide to the base member. The base member is disposed with respect to the chain guide such that at least a part of the attaching bore is disposed in front of the chain guide and above the chain guide while the front derailleur is in a state in which the base member is attached to the frame.

Abstract: A front derailleur unit basically includes a fixed member and a movable member. The fixed member is configured to be releasably attached to a plurality of different type mounting units. The different type mounting units is detachably attached to a bicycle frame. The movable member is movably supported to the fixed member to move with respect to the fixed member.

Abstract: A bicycle derailleur includes a fixing member, a selected chain guide unit and a motor unit. The fixing member is configured to be fixed to a bicycle frame. The selected chain guide unit has a chain guide for guiding a bicycle chain and a support mechanism moveably supporting the chain guide relative to the fixing member. The selected chain guide unit is one of a plurality of different configurations of chain guide units. The motor unit is configured to be selectively attached to the selected chain guide unit to move the chain guide. The motor unit is configured to be mounted to each of the plurality of configurations of chain guide units.

Abstract: A front derailleur basically includes a fixed member, a main body, a movable member and a support member. The fixing member is configured to be fixed to a bicycle frame. The main body is attached to the fixing member. The movable member is movably supported to the main body with respect to the fixing member. The support member is movably attached to one of the fixing member and the main body. The support member including an operated portion selectively operated by an operating element and positioned between the fixing member and the main body.

Abstract: An electric front derailleur is provided with a base member, a movable member, a driving unit and a controller. The base member includes a bicycle mounting portion. The movable member moves with respect to the base member. The controller selectively operates the driving unit with one of a first mode which moves the movable member between a first end position and a second end position, and a second mode which moves the movable member between a third end position and a fourth end position. The controller operates the driving unit to selectively position the movable member at first, second and third stop positions while in the first mode. At least one of the third and fourth end positions differs from the first and second end positions. A first distance between the first and second stop positions differs from a second distance between the second and third stop positions.

Abstract: A bicycle front derailleur includes abase member configured to be attached to a bicycle frame, a chain guide configured to engage a chain, a connecting structure that connects the chain guide to the base member such that the chain guide can move relative to the base member, and an attachment structure detachably attaching the chain guide to the connecting structure and/or the connecting structure to the base member.

Abstract: A bicycle front derailleur that includes a chain guide configured to engage a bicycle chain and a mounting member operatively coupled to the chain guide. The mounting member includes a frame support structure that includes a contact member that is configured to contact the frame of the bicycle, and a support member mounted to the mounting member. The contact member is supported by the support member.

Abstract: A front derailleur unit basically includes a fixed member and a movable member. The fixed member is configured to be releasably attached to a plurality of different type mounting units. The different type mounting units is detachably attached to a bicycle frame. The movable member is movably supported to the fixed member to move with respect to the fixed member.

Abstract: A front derailleur basically includes a fixed member, a main body, a movable member and a support member. The fixing member is configured to be fixed to a bicycle frame. The main body is attached to the fixing member. The movable member is movably supported to the main body with respect to the fixing member. The support member is movably attached to one of the fixing member and the main body. The support member including an operated portion selectively operated by an operating element and positioned between the fixing member and the main body.

Abstract: A front derailleur basically includes a fixed member, a movable member, a driven link and a first link. The fixing member is configured to be fixed to a bicycle frame. The movable member is movably supported with respect to the fixed member. The driven link is operatively coupled to the movable member. The first link movably connects the movable member to the fixed member, and is adjustably coupled to the driven link in a fixed position by a fixing structure to establish a fixed rest position of the movable member with respect to the fixed member.

Abstract: An electric front derailleur includes a base member, a chain guide, a first link member, a second link member and an electric driving unit. The base member includes a mounting portion to be operatively mounted to a bicycle frame. The chain guide is movable with respect to the base member. The first link member movably connects the chain guide to the base member. The first link member is at least partially aligned with the chain guide in a lateral direction with the electric front derailleur in an installed position. The second link member movably connects the chain guide to the base member. The second link member is at least partially aligned with the chain guide in the lateral direction with the electric front derailleur in the installed position. The electric driving unit is operatively coupled to the chain guide to move the chain guide with respect to the base member.

Abstract: A bicycle derailleur is basically provided with a base member, a movable member and a connecting structure. The base member includes a bicycle mounting portion. The movable member is movable with respect to the base member between a first position and a second position that is farther than the first position from the base member. The connecting structure movably connects the movable member to the base member. The connecting structure moves the movable member with an actuation ratio that descends and then ascends as the movable member moves from the first position towards the second position.

Abstract: A bicycle front derailleur is basically provided with a base member, a movable member and a biasing arrangement. The biasing arrangement is operatively disposed between the base member and the movable member such that a biasing force of the biasing arrangement is smaller during an early range of a movement range of the movable member as the movable member moves from a first position to a second position. The biasing arrangement includes a first biasing member, a second biasing member and a pre-load body. The first and second biasing members selectively bias the movable member. The pre-load body maintains the second biasing member in a loaded state such that the second biasing member applies the second biasing force only after the movable member has partially moved from the first position towards the second position.

Abstract: A bicycle front derailleur that includes a chain guide configured to engage a bicycle chain and a mounting member operatively coupled to the chain guide. The mounting member includes a frame support structure that includes a contact member that is configured to contact the frame of the bicycle, and a support member mounted to the mounting member. The contact member is supported by the support member.

Abstract: A front derailleur comprises a base member structured to be attached to a bicycle frame member, a chain guide operatively connected to the base member, and an actuation mechanism coupled to the base member and to the chain guide for moving the chain guide relative to the base member between a first position corresponding to a location for positioning a chain on a first sprocket and a second position corresponding to a location for positioning the chain on a second sprocket. The actuation mechanism is configured so that an actuation ratio of the derailleur when the chain guide is located in the first position is greater than or equal to 1.5 times the actuation ratio when the chain guide is located in the second position.

Abstract: A bicycle front derailleur that includes a main body and a chain guide operatively coupled to the main body. The chain guide includes a first plate, a second plate, and a contact member affixed to the first plate. The contact member includes a flexible portion that is adapted to flex when contacted by a chain running through the chain guide.