A steering assembly for a bicycle includes a front fork that includes an upper crown, a lower crown, and a rigid crown connector that connects the upper crown to the lower crown. The steering assembly also includes an upper cone configured to mount to the upper crown of the front fork. The upper cone includes an upper cone bearing interface configured to interact with an upper bearing assembly seated in an upper portion of a head tube of a bicycle frame. The steering assembly also includes a lower cone configured to mount to the lower crown of the front fork. The lower cone includes a lower cone bearing interface configured to interact with a lower bearing assembly seated in a lower portion of the head tube of the bicycle frame.

An electric small-sized vehicle, in particular an electric scooter, having a rear wheel, a frame, a support with a foot board and a wheel folding mechanism. The support includes a rear support section connected to the rear wheel, a front support section connected to the frame, and a receiving area for the rear wheel. The wheel folding mechanism has a first joint with a first pivot axis. The vehicle is adjustable from an unfolded position into a folded position via the joint. The front support section is connected to the rear support section by the first joint. In the unfolded position, the rear wheel is positioned in an outer position where the rear wheel is arranged outside of the receiving area, and in the folded position, the rear wheel is positioned in an inner position where the rear wheel is at least partly arranged within the receiving area.

A method of modifying the rake angle on a motorcycle having a double wishbone front suspension. The motorcycle has a tubular steering housing connected to a non-telescoping fork assembly by a straight body steering stem. The method includes the step of replacing the straight body steering stem with a canted body steering stem. The canted body steering stem includes (i) a primary section having a steering axis corresponding to a steering axis of the motorcycle; and (ii) a secondary section having a cant axis which varies from the steering axis by between 1 and 16.

A method of modifying the rake angle on a motorcycle having a double wishbone front suspension. The motorcycle has a tubular steering housing connected to a non-telescoping fork assembly by a straight body steering stem. The method includes the step of replacing the straight body steering stem with a canted body steering stem. The canted body steering stem includes (i) a primary section having a steering axis corresponding to a steering axis of the motorcycle; and (ii) a secondary section having a cant axis which varies from the steering axis by between 1 and 16.

A bicycle includes a lower frame member and an upper frame member connected to a head tube. The lower frame member includes a down tube, a bottom bracket, and chain stays. The upper frame member includes a top tube, seat stays, and a passage formed in part by a first side wall and a second side wall. The first and second side walls include a first and second openings, respectively. A seat tube extends in an upward direction from the bottom bracket and through the passage. The seat tube includes an opening that extends laterally therethrough. A passive pivot assembly secures the seat tube within the passage, and includes a guide sleeve that extends through the first opening, through the opening in the seat tube, and through the second opening. One or more fasteners secure the guide sleeve to the upper frame member.

A bicycle includes a lower frame member and an upper frame member connected to a head tube. The lower frame member includes a down tube, a bottom bracket, and chain stays. The upper frame member includes a top tube, seat stays, and a passage formed in part by a first side wall and a second side wall. The first and second side walls include a first and second openings, respectively. A seat tube extends in an upward direction from the bottom bracket and through the passage. The seat tube includes an opening that extends laterally therethrough. A passive pivot assembly secures the seat tube within the passage, and includes a guide sleeve that extends through the first opening, through the opening in the seat tube, and through the second opening. One or more fasteners secure the guide sleeve to the upper frame member.

A bicycle according to the present disclosure comprises a frame assembly and a front fork. The frame assembly includes a head tube defining a steering axis. The front fork is rotatably coupled to the head tube and includes upper and lower supports aligned with the steering axis. The upper and lower supports project away from the fork assembly and rotationally couple the front fork assembly to the head tube. A buttress is coupled to the upper and lower supports at upper and lower buttress ends. A pair of laterally spaced fork legs project from the buttress lower end at one end of the fork legs. The buttress is disposed forward of the head tube and has a lateral width which tapers from a first width at the buttress lower end to a second width at the buttress upper end.

A bicycle according to the present disclosure comprises a frame assembly and a front fork. The frame assembly includes a head tube defining a steering axis. The front fork is rotatably coupled to the head tube and includes upper and lower supports aligned with the steering axis. The upper and lower supports project away from the fork assembly and rotationally couple the front fork assembly to the head tube. A buttress is coupled to the upper and lower supports at upper and lower buttress ends. A pair of laterally spaced fork legs project from the buttress lower end at one end of the fork legs. The buttress is disposed forward of the head tube and has a lateral width which tapers from a first width at the buttress lower end to a second width at the buttress upper end.

An assembly comprising: a core in the form of a toroid; and at least one washer overlying the core, the washer comprising a polymer, wherein the washer has an arcuate cross-section so as to have a shape complementary to the core.

A bearing structure for a shaft includes a shaft on which a male thread section is formed and a concave section recessed inside in a radial direction is partially formed in a circumferential direction thereof, a cylindrical holder in which the shaft is disposed, a bearing attached between the shaft and the holder and configured to rotatably support the shaft at an opening side thereof at which the holder is open, a thread engagement member having a female thread section threadedly engaged with the male thread section and a flat surface section crossing the circumferential direction of the shaft and formed on an outer circumference thereof, and coaxially threadedly fastened to the shaft from the opening side, and a locking member having a convex section fitted into the concave section and an engaging section engaged with the flat surface section, and partially locked to the shaft and the thread engagement member.