Embodiments of the present invention describe a recreational vehicle spindle, including a spindle body having one or more sockets in the spindle body, and an upper attachment mechanism in contact with the spindle body and adapted to attach to a steering component. The spindle also includes a lower attachment mechanism in contact with the spindle body and adapted to attach to a ski or wheel. The one or more sockets are adapted to each receive a ball and stud forming one or more ball joints.

A frame structure of a saddle riding type vehicle, the frame structure includes a main frame body configured to support the power unit and the front wheel suspension device; and a steering post configured to support a steering shaft at above of the main frame body, wherein the steering post includes a shaft holder configured to rotatably support the steering shaft, and a plurality of column members that extend downward from the shaft holder and that are fixed to the main frame body, and wherein the steering post is detachable with respect to the main frame body.

A frame structure of a saddle riding type vehicle, the frame structure includes a main frame body configured to support the power unit and the front wheel suspension device; and a steering post configured to support a steering shaft at above of the main frame body, wherein the steering post includes a shaft holder configured to rotatably support the steering shaft, and a plurality of column members that extend downward from the shaft holder and that are fixed to the main frame body, and wherein the steering post is detachable with respect to the main frame body.

A vehicle suspension may include a crank bar and first and second lateral links. The crank bar is mounted to an axle assembly and is rotatable relative to the axle assembly about a first axis. The first lateral link may include a first end rotatably coupled to a first bracket fixed to a chassis of the vehicle and a second end coupled to the crank bar for rotation about a second rotational axis. The second lateral link may include a third end rotatably coupled to a second bracket fixed to the chassis and a fourth end coupled to the crank bar for rotation about a third rotational axis. A straight line having an infinite length may intersect the first rotational axis and one of the second and third rotational axes does not intersect the other of the second and third rotational axes.

A vehicle suspension may include a crank bar and first and second lateral links. The crank bar is mounted to an axle assembly and is rotatable relative to the axle assembly about a first axis. The first lateral link may include a first end rotatably coupled to a first bracket fixed to a chassis of the vehicle and a second end coupled to the crank bar for rotation about a second rotational axis. The second lateral link may include a third end rotatably coupled to a second bracket fixed to the chassis and a fourth end coupled to the crank bar for rotation about a third rotational axis. A straight line having an infinite length may intersect the first rotational axis and one of the second and third rotational axes does not intersect the other of the second and third rotational axes.

A trailing arm device (1) of a drivable torsion beam axle (2) is described. The trailing arm device (1) has a housing (5) in which a drive-train (8) can be arranged and is connected to a trailing arm (4). The housing (5), as fitted into position within a vehicle, has a sidewall (11) formed integrally with a central housing region (9) on a side facing toward a wheel. The sidewall delimits a housing interior space (10) that accommodates, at least partially, the drive-train (8). On the side facing away from the wheel, the housing interior space (10) is delimited by at least one cover element (14) that can be detachably connected to the central housing region (9).

A structure of rocking lock operation part for a saddle riding vehicle, the structure of rocking lock operation part includes a rocking lock mechanism configured to lock lateral rocking of a vehicle body and a lock operator configured to switch between locking and unlocking of the rocking lock mechanism, wherein the rocking lock mechanism and the lock operator are disposed on the vehicle body, and, when seen in a side view, a gripping section of the lock operator is disposed in front of a position overlapping a pivot support member configured to pivotably support the steering handle in the vehicle body and disposed in rear of a headlight disposed in front of the pivot support member.

A tubular type torsion beam is manufactured by bending and welding and coupling a plate material. The plate material has a plurality of protrusions disposed on a plurality of side surfaces in a width direction of the vehicle. The torsion beam is manufactured by molding the plate material in a pipe shape by bending the plate material in the width direction and molding the plate material to dispose the plurality of protrusions to contact each other to form a gap between the plurality of side surfaces of the plate material and then welding and coupling the plurality of side surfaces of the plate material.

This torsion beam manufacturing method is a method of manufacturing a torsion beam that includes a uniformly shaped closed cross-sectional portion of which a cross section orthogonal to a longitudinal direction is a closed cross section having a substantial V-shape or a substantial U-shape at any position in the longitudinal direction, and a shape changing portion which has a connection region leading to the uniformly shaped closed cross-sectional portion and including a closed cross section having a shape different from the shape of the closed cross section of the uniformly shaped closed cross-sectional portion. The torsion beam manufacturing method includes pulling process of applying a tensile force in the longitudinal direction to at least the connection region of a torsion beam material including the uniformly shaped closed cross-sectional portion and the shape changing portion, to obtain the torsion beam.

A vehicle small in width and capable of ensuring both driving stability and drivability includes: a vehicle body with two or more wheels including steered wheels (right front wheel, left front wheel) for steering; an inclination angle detection part that detects the inclination angle of the vehicle body about a roll axis thereof; and a torque applying part (turning mechanism) that applies a steering torque to the steered wheels in accordance with an inclination angular velocity or an inclination angular acceleration of the vehicle body calculated from the inclination angle.