The present invention discloses a bicycle shaft transmission assembly including a bottom bracket engaged with a crank in a front part and a wheel hub in a rear part, a front main gear mounted on the bottom bracket, a rear main gear mounted on the wheel hub, a transmission shaft eccentrically arranged between the front main gear and the rear main gear. The front main gear is matched with a front end gear, and the rear main gear is matched with a rear end gear. The front main gear is externally provided with a front housing, the transmission shaft is externally provided with a transmission shaft housing, the rear main gear is externally provided with a rear housing, a front end of the transmission shaft housing is engaged with the front housing, a rear end of the transmission shaft housing is engaged with the rear housing.

A vehicle includes a main vehicle body, a suspended assembly that supports the main body of the vehicle, a suspension arrangement for connecting the suspended assembly to the main body of the vehicle, and a steering system for steering the suspended assembly. The suspended assembly assisting in providing directional control of the vehicle and stability in a lateral direction relative to a normal straight-ahead direction of travel for the vehicle. The steering system including a first steering arrangement that controls movement of the suspended assembly relative to the main vehicle body such that the suspended assembly pivots about a first steering axis. The steering system further including a second steering arrangement that controls movement of the suspended assembly relative to the main vehicle body such that the suspended assembly pivots about a second steering axis with the second steering axis being different than the first steering axis.

A vehicle includes a main vehicle body, a suspended assembly that supports the main body of the vehicle, a suspension arrangement for connecting the suspended assembly to the main body of the vehicle, and a steering system for steering the suspended assembly. The suspended assembly assisting in providing directional control of the vehicle and stability in a lateral direction relative to a normal straight-ahead direction of travel for the vehicle. The steering system including a first steering arrangement that controls movement of the suspended assembly relative to the main vehicle body such that the suspended assembly pivots about a first steering axis. The steering system further including a second steering arrangement that controls movement of the suspended assembly relative to the main vehicle body such that the suspended assembly pivots about a second steering axis with the second steering axis being different than the first steering axis.

A vehicle has a frame defining a longitudinal centerplane, at least one front wheel and at least one rear wheel, an engine operatively connected to at least one of the wheels, a transmission, a brake assembly operatively connected to at least one of the wheels, and a straddle-type seat. Left and right rails disposed vertically lower than the seat extend forwardly and downwardly on a left and right side respectively of the longitudinal centerplane. A left footrest connected to the left rail is selectively disposed in one of at least a first and a second left footrest position. A right footrest connected to the right rail is selectively disposed in one of at least a first and a second right footrest position. A foot-operated actuator is connected to one of the left and right footrests. The actuator is operatively connected to one of: the brake assembly and the transmission.

A vehicle has a frame defining a longitudinal centerplane, at least one front wheel and at least one rear wheel, an engine operatively connected to at least one of the wheels, a transmission, a brake assembly operatively connected to at least one of the wheels, and a straddle-type seat. Left and right rails disposed vertically lower than the seat extend forwardly and downwardly on a left and right side respectively of the longitudinal centerplane. A left footrest connected to the left rail is selectively disposed in one of at least a first and a second left footrest position. A right footrest connected to the right rail is selectively disposed in one of at least a first and a second right footrest position. A foot-operated actuator is connected to one of the left and right footrests. The actuator is operatively connected to one of: the brake assembly and the transmission.

A vehicle has a vehicle frame, two front wheels, a rear wheel. An engine with at least one cylinder is mounted to the vehicle frame such that a cylinder plane extends generally longitudinally and vertically. At least a portion of the at least one cylinder is disposed forward of a front wheel plane. A transmission assembly disposed longitudinally rearward of the engine. A straddle seat is disposed at least in part longitudinally rearward of the assembly. The engine is entirely disposed between a center of the left footrest and a center of the right footrest in the lateral direction.

A vehicle has a vehicle frame, two front wheels, a rear wheel. An engine with at least one cylinder is mounted to the vehicle frame such that a cylinder plane extends generally longitudinally and vertically. At least a portion of the at least one cylinder is disposed forward of a front wheel plane. A transmission assembly disposed longitudinally rearward of the engine. A straddle seat is disposed at least in part longitudinally rearward of the assembly. The engine is entirely disposed between a center of the left footrest and a center of the right footrest in the lateral direction.

A bicycle component that can be reduced in size in a direction orthogonal to a crankshaft includes a housing and a first mounting portion. The housing includes a support that supports a crankshaft of a bicycle. The first mounting portion is provided on the housing independently from the support to mount the housing on a frame of the bicycle. The first mounting portion includes a through hole through which the crankshaft extends.

A bicycle component that can be reduced in size in a direction orthogonal to a crankshaft includes a housing and a first mounting portion. The housing includes a support that supports a crankshaft of a bicycle. The first mounting portion is provided on the housing independently from the support to mount the housing on a frame of the bicycle. The first mounting portion includes a through hole through which the crankshaft extends.

A method and system for assembling a vehicle of a family of vehicles includes providing a group of engines. A first engine including a first number of cylinders corresponds to a first vehicle. A second engine including a second number of cylinders corresponds to a second vehicle. The second number is greater than the first number which is at least one. A cylinder plane extends vertically and longitudinally. At least one cylinder is disposed at least partly forward of a front wheel plane. The transmission assembly is rearward of the selected engine and one of the transmission assembly and the selected engine is in a same location whether the selected engine is the first or the second. The seat is at least in part longitudinally rearward of the transmission assembly. The selected engine is laterally disposed between the centers of the footrests.