Abstract: A personal mobility vehicle, such as a scooter, includes at least one battery and motor for powering at least one driven wheel. The vehicle also includes a braking assembly configured to isolate the motor from the at least one driven wheel such that power is terminated from the motor to the at least one wheel in response to a user engaging a braking assembly of the vehicle. The vehicle can include a switch or position sensor that interacts with the braking assembly to initiate the isolation of the motor from the at least one driven wheel and the switch or position sensor preferably is inaccessible to the foot of the user.

Abstract: In an electric drive device for a bicycle, there is an electric motor with an output shaft and an angular gear by which the output shaft is connectable to a wheel of the bicycle in a drive-effective manner, and a fastening device is provided, carrying the electric motor and configured to fasten the electric motor to a rotation axle of the wheel.

Abstract: A vehicle body frame includes a main frame that extends from a head pipe toward the vehicle rear side above an engine and a down-frame that extends downward from one end fixed to the head pipe. The main frame is assembled into a truss shape from a pair of left and right upper frames and a pair of left and right lower frames and reinforcing frames disposed between these upper frames and lower frames. Front end parts of the upper frames are fixed to the upper end side of the head pipe and front end parts of the lower frames are fixed to a part close to the head pipe in the single down-frame.

Abstract: A swing arm extends rearwardly from an engine, and a pair of side cases is arranged leftwardly and rightwardly of the swing arm. The swing arm is supported at a body frame by a single rear shock absorber. The engine is supported at the body frame by a plurality of vibration absorbing support members. Each vibration absorbing support member has a structure in which a rubber member is arranged between an outer cylinder and an inner cylinder. The engine is attached to the inner cylinder with use of an engine support shaft, and the body frame is attached to the outer cylinder with use of an engine bracket. The rubber member has projections being in contact with an inner surface of the outer cylinder and recesses not being in contact with the inner surface of the outer cylinder. The swing arm is rigidly and pivotally connected to the engine.

Abstract: A high performance motorcycle having a frame, engine suspension, and rear wheel drive system that enables rider foot positioning close to the longitudinal centerline of the motorcycle and an overall aerodynamic profile. The engine suspension, centering and damping system allows for lateral movement while damping vibration and unwanted oscillations. The rear wheel drive includes a driven pulley axially disposed on a rear wheel axle, a drive pulley configured to receive motive output from the motorcycle engine, an idler pulley disposed above a line between the axes of rotation of the drive pulley and the rear wheel axle, and a belt or chain disposed around and operatively connecting the drive pulley, the driven pulley and the idler pulley, wherein the idler pulley and the drive pulley configured so as to provide substantially constant tension to a belt or chain over the range of travel of the rear suspension.

Abstract: An arrangement for the vibration decoupling of a motor for motorized two-wheelers is provided. In an embodiment of the two-wheeler an engine-mount swing arm is mounted to be rotatable about a first shaft. The first shaft is mounted on the vehicle frame of the two-wheeler to be rotatable about a second shaft by way of a decoupling swing arm. A support rod fitted with damping buffers is provided on the engine-mount swing arm, oriented such that vibrations are decoupled in and against the direction of travel, with vibrations being decoupled in the direction of the cylinder axis and providing good anti-squat behavior.

Abstract: Provided is a vehicle body frame structure which can reduce a burden in the assembly of a straddle-type vehicle. The vehicle body frame comprises a main frame; and a rear frame connected to and extending rearward from the main frame. The main frame includes first and second members which are connected to each other. The main frame includes first and second connection portions spaced apart from each other in a direction perpendicular to a vehicle width direction. The connection portions are provided at the first member and the second member, respectively. The rear frame includes a first connected portion connected to the first connection portion by a first fastener member, and a second connected portion connected to the second connection portion by a second fastener member. The restricting direction of the first fastener member is orthogonal to the restricting direction of the second fastener member.

Abstract: A device for rotating a tire includes a fixed support, a driving belt, a plurality of first pulleys, and at least one second pulley. The driving belt has a contact face for contacting an annular part of the tire, and the driving belt enables rotation of the tire. The first pulleys are mounted on the support and are in abutment with the driving belt on a side opposite to the contact face in order to press the contact face radially against the annular part of the tire. The at least one second pulley is in abutment with the contact face of the driving belt and is mounted for translational movement on the support in order to locally space the contact face apart from the annular part of the tire.

Abstract: A saddle type vehicle to improve the workability in fastening a frame and an engine together and thereby to enhance productivity. The saddle type vehicle includes a head pipe, a main frame extending rearwardly from the head pipe, and a seat rail located rearwardly of the main frame for supporting a seat. The main frame is fastened to the engine by fastening members being directed from an outer side toward an inner side in the vehicle widthwise direction. A knock pin is provided between the main frame and the engine, in a position in the vicinity of at least one of the fastening members.

Abstract: A bicycle including a frame that has a head tube, and a frame member that is elongated along a longitudinal axis. The bicycle also includes a receiver that is disposed in the frame member, and a battery pack that is coupled to the frame member and detachably connected to the receiver. The receiver has a tapered socket and a power connector encircled by the tapered socket. The battery pack has a tapered end cap that is insertable into the tapered socket along the longitudinal axis. The tapered end cap includes a battery connector disposed on an end of the battery pack. The tapered end cap is at least partially nested within the tapered socket along the longitudinal axis upon connection between the receiver and the battery pack, and the battery connector is electrically connected to the power connector upon nesting the tapered end cap in the tapered socket.

Abstract: A straddle-type vehicle includes a bracket including a first attachment portion, a second attachment portion and a coupling portion. The first attachment portion is attached to a down frame. The second attachment portion is attached to an engine and is located rearward of the first attachment portion. The coupling portion is located between the first and second attachment portions and couples the first attachment portion with the second attachment portion. The first and second attachment portions extend in the front-to-rear direction. The first attachment portion is offset relative to the second attachment portion in a vehicle width direction. In a plan view of the vehicle, the coupling portion is oriented in or substantially in a front-to-rear direction with respect to the vehicle and extends in a direction different from that of the first and second attachment portions.

Abstract: A vehicle body frame has a head pipe, a main frame, a down frame, and a lower frame. The main frame extends downward to the rear from the head pipe. The down frame extends downward to the rear from the head pipe in a position below the main frame. The lower frame connects an end of the down frame to an end of the main frame. An engine of the vehicle has a crankshaft, a crankcase, and a cylinder member. The crankshaft is housed in the crankcase. The cylinder member is attached to the crankcase. A cylinder is formed inside the cylinder member. An axis of the cylinder extends upward obliquely to the rear.

Abstract: An inverted pendulum type vehicle is configured to permit a user to easily get on to the vehicle in a forward-facing posture from the rear of a vehicle body. The vehicle includes a seat for supporting a user thereon, as well as a main wheel driven by an inverted pendulum control, a vehicle body frame which rotatably supports the main wheel, and a tail wheel attached to a tail wheel arm, supported for pivotal motion on the vehicle body frame. The seat is attached to the vehicle body frame at an uppermost portion thereof. The vehicle body frame pivots rearwardly around an axle of the driving wheel together with the seat upon cancellation of the inverted pendulum control and the range of pivotal motion thereof is limited by contact thereof with the arm.

Abstract: A support structure for a water-cooled internal combustion engine supported by a body frame of a motorcycle 2 includes a cooling device that circulates cooling water through an inside and an outside of at least a cylinder head of the engine, a thermo-valve that controls the cooling water circulating in the cooling device, and a thermo-valve case that accommodates the thermo-valve and that is integrally molded with the cylinder head such that a part thereof bulges from a side surface of the cylinder head. A support portion formed on the cylinder head is fixed to the body frame and is integrally molded so as to stride between the cylinder head and the thermo-valve case, whereby the support portion is solidly formed and an area around a thermo-valve case can be reinforced by the support portion.

Abstract: A scooter is configured to rapidly dissipate impact loading permitting jumps and safe landings without damaging the scooter. The scooter includes a frame attached to a fork that is further attached to handle bars and a front wheel such that the handle bars can turn the front wheel allowing the scooter to turn. The frame is attached to a swing arm with a suspension system and a rotation bolt such that the suspension system causes the swing arm to rotate about the rotation bolt to rapidly dissipate impact loading. A rear wheel is mechanically coupled to the swing arm that cushions the jumps permits the safe landings without damaging the scooter.

Abstract: A chain drive is provided with an engine hanger bolt. The engine hanger bolt is located in a direction rearwardly in a vehicle-body longitudinal direction and upwardly of a drive sprocket and extends in a vehicle width direction to fix an engine block to a body frame. A guide tube is mounted coaxially with the engine hanger bolt and restricts upward displacement of a drive chain.

Abstract: A saddle type vehicle includes a head pipe that steerably supports a steering system including a front wheel, a main frame extending rearwardly downward from the head pipe, left and right lower frames extending substantially in parallel to each other rearward from a lower portion of the main frame, and a storage space provided between the left and right lower frames on the rear side of the main frame. The storage space permits a fuel tank as a vehicle component part to be disposed therein. A front cross frame is connected to a lower end portion of a main frame lower portion and extends in the vehicle width direction. Front end portions of the lower frames are connected to left and right end portions of the front cross frame.

Abstract: To obtain vibration characteristics suited to a plurality of operating modes. A first member is mounted on at least one of a left side frame of a vehicle and a right side frame of the vehicle. The first member extends towards the right frame or the left frame. A second member is mounted to at least one of the right side frame of the vehicle and a left side frame. The second member extends towards the left frame or the right frame. A vibration insulating member is provided between the first member and the second member and elastically couples the first and second members to each other.

Abstract: A battery is disposed close to a through-hole of a swing shaft that pivotally supports a swing arm on a vehicle body frame so as to be freely swingable at a position closer to the front of the vehicle body in the swing arm. An electric motor is disposed close to an axle of a rear wheel at a position closer to the rear of the vehicle body in the swing arm. The control board is disposed at a position outside of the battery in the vehicle width direction, and the heating element board is disposed at a position rearward of the vehicle body with respect to the control board and forward of the vehicle body with respect to the motor.

Abstract: Disclosed is a battery holding structure of a two-wheeled vehicle. The two-wheeled vehicle includes a frame and a saddle. A storage box is arranged under the saddle. A power unit is arranged under the storage box. The frame is provided with a battery mounting seat. The storage box has a front end forming a shielding section. The shielding section forms a maintenance opening corresponding to the battery mounting seat. The battery mounting seat receives therein a battery to have the battery located within the range of the maintenance opening. To maintain the battery, it only needs to lift the saddle and remove the maintenance cover that covers the maintenance opening to allow the maintenance of the battery to be carried out. This simplifies the maintenance operation of the battery and also simplifies the maintenance of a nozzle of an air intake system provided for an internal combustion engine.

Abstract: In a saddle type vehicle having a swing type power unit swingably supported on the vehicle wherein the vehicle length can be made shorter. A motorcycle includes a link mechanism extending to the rear from a body frame through a link pivot. The swing type power unit includes an engine. A rear wheel is supported rotatably and swingably on the link mechanism. A cross frame extends between a pair of left and right lower frames with a link restriction section for restricting the turning amount of the link mechanism hanging downwardly from the cross frame. The link pivot is disposed under the lower frames.

Abstract: A wheel suspension system for a three-wheeled motorcycle or “trike” includes parallel wheels mounted on vertically pivoting suspension arms governed by hydraulic pistons. The pistons have upper liquid reservoirs that are interconnected through a valve system, which interconnects the upper reservoirs when the trike is in motion, allowing opposing vertical wheel movements when banking through turns, and prevents liquid exchange when the trike is stopped, thereby holding the motorcycle upright, Embodiments include a manual and/or automatic valve control. A threshold switching speed for an automatic controller can be factory set and/or user adjustable. The pistons can include directly interconnected lower fluid reservoirs. A shock-absorbing reservoir can allow transient vertical movement of both wheels to absorb shocks. A cover system can emulate the appearance of saddle bags and can appear to be covering only a single wheel.

Abstract: A motorcycle has a large accommodating space and an enlarged capacity of a fuel filter. The motorcycle includes: a fuel tank disposed on the upper side of the rear wheel and on the rear side of the luggage box; a rear fender provided between the rear frames and, disposed between the luggage box and the rear wheel, and covering the rear wheel on the front and upper sides of the rear wheel; a fuel supply path; and a fuel secondary filter. The rear fender is so disposed that its front portion faces a rear wall of the luggage box, the front portion is inclined rearwardly upward so that the distance thereto from the rear wall increases along an upward direction, and the fuel secondary filter is disposed between the rear wall of the luggage box and the front portion of the rear fender.

Abstract: A vehicle engine in which a water temperature sensor can be protected against debris or foreign matter such as earth and sand, flying stones, etc., from impacting the temperature sensor without taking any protective measure for exclusive use. A vehicle engine includes a head portion of the cylinder fitted with a water temperature sensor for detecting water temperature in a water jacket. The head portion of the cylinder is provided on one side thereof with a sensor mounting hole opening directly under an upstream end opening portion of an intake port. The water temperature sensor is mounted in the sensor mounting hole. Further, the head portion of the cylinder is formed with a left-right pair of hanger bosses which are opposed to each other, with the water temperature sensor therebetween. Engine hanger brackets extend from the body frame and are firmly attached to the hanger bosses.

Abstract: An electric motorcycle in which a power drive unit and a motive power generation motor for traveling are secured to a swing arm swinging around a pivot shaft, and power from a battery is supplied through the power drive unit to the motive power generation motor. A hollow inside of the swing arm is partitioned into an air introducing space and an equipment fixing space by a partition wall. The power drive unit is secured in the equipment fixing space so as to be in close contact with the partition wall and a fin extending from the partition wall to the air introducing space are formed at a fixing surface of the air introducing space to which the power drive unit is attached.

Abstract: A non-uniform load is prevented from acting on a cross member to reduce the weight of the cross member in a saddled vehicle. In the saddled vehicle has a vehicle body frame 11 for suspending an engine 12, a swing arm 14 for suspending a rear wheel WR freely swingably, pivot portions 29 which are formed as a right-and-left pair, constitute a part of the vehicle body frame 11 and pivotably support the swing arm 14, a lower cross member 28 for joining the pivot portions 29, a rear cushion 32 for applying elastic force to the swing arm 14, a link mechanism 31 for joining the lower end 32A of the rear cushion 32, the swing arm 14 and the pivot portions 29, a link joint stay 70 which is formed at the rear side of the lower cross member 28 and joins the link mechanism 31, and a lower hunger 48 that is formed at the front side of the lower cross member 28 and fixes the engine 12, the link joint stay 70 and the lower hunger 48 are formed at the same position with respect to the vehicle width direction.

Abstract: In a saddle type vehicle having a swing type power unit swingably supported on the vehicle wherein the vehicle length can be made shorter. A motorcycle includes a link mechanism extending to the rear from a body frame through a link pivot. The swing type power unit includes an engine. A rear wheel is supported rotatably and swingably on the link mechanism. A cross frame extends between a pair of left and right lower frames with a link restriction section for restricting the turning amount of the link mechanism hanging downwardly from the cross frame. The link pivot is disposed under the lower frames.

Abstract: In a frictional drive vehicle, a load acting on the vehicle such as the weight of a rider is converted into a force that urges two frictionally engaging parts (3L, 3R, 25) toward each other. Thereby, the contact pressure between the two frictionally engaging parts is maintained at an optimum level under all conditions. A weight of a rider may be transmitted to a drive member that frictionally engages a main wheel via a four-link parallel link mechanism (40, 50).

Abstract: A motorcycle that maintains sufficient vehicle rigidity with a simple structure. A main frame has an up-and-down extension part in a vehicle width center, side plates disposed apart on the right and left of the up-and-down extension part, and first and second supporting pipes. Both ends of the supporting pipes are attached to the side plates.

Abstract: An electric motorcycle in which the disposition space of a motor is downsized, the number of components is reduced, and the power transmission efficiency is improved. In an electric motorcycle, a swing arm is swingably supported by a vehicle body frame and supports a power generating motor. A driving shaft of the power generating motor and a rear wheel axle of a rear wheel are coupled together. A driving force of the power generating motor is transmitted to the rear wheel. In the electric motorcycle, the driving shaft of the power generating motor is disposed generally in parallel to the rear wheel axle of the rear wheel. A driving gear is provided on the driving shaft. A driving gear is in meshing engagement with a reduction gear provided on the rear wheel axle. The driving gear has a smaller diameter than that of the reduction gear. A driving force of the power generating motor is transmitted to the rear wheel axle through a reduction.

Abstract: An engine supporting device for a motorcycle includes a first frame section having a head pipe portion supporting a front fork, a second frame section supporting a rear arm and connected to the first frame section and an engine supported between the first and second frame sections and having a standing cylinder section. The second frame section has an extension made from a forged product and extends toward a region above the cylinder section of the engine. A hanger bracket that suspends the cylinder section is mounted to the extension.

Abstract: An electric bicycle having a front cover unit for housing a controller having an indicator is provided. The front cover unit is attached to the body of the electric bicycle substantially near a steering shaft. The controller can be attached to an interior portion of the front cover unit. The indicator can be attached to the controller and can be exposed through a window in the front cover unit. The front cover unit can comprise a front surface cover member and a rear surface cover member. The front surface cover member can be attached to and detached from the rear surface cover member. The rear surface cover member can have a first recessed portion having a first window for exposing the indicator and a second recessed portion having a second window for exposing a power switch.

Abstract: An engine suspension device for a motorcycle can be increased in design flexibility and weight. An engine suspension device for a motorcycle has a suspension link provided between a body frame and an engine for pivotably supporting the engine. The suspension link includes a link body. Two pairs of right and left cylindrical members are provided at opposite ends of the link body and are connected to the body frame and the engine, respectively. The pairs of right and left cylindrical members are spaced apart from each other in the lateral direction of the motorcycle. The suspension link further includes a right connecting member for connecting the right cylindrical members and a left connecting member for connecting the left connecting members. The right and left connecting members are connected to each other by the link body.

Abstract: A motorcycle having a frame, front and rear wheel assemblies and a motor and transmission assembly. The motor and transmission assembly attaches to the frame through a front mounting assembly and a rear mounting assembly such that the motor is selectively movable horizontally with respect to the frame. The front and rear mounting assemblies are preferably isolation mounted to dampen vibrations from the motor to the frame. In an embodiment a countershaft is mounted to the frame, the countershaft having a drive sprocket on one side, and a driven sprocket on the opposite side. Therefore, the transmission power take-off engages the countershaft through a chain on one side of the motorcycle, and the rear wheel assembly engages the countershaft through a chain on the other side of the motorcycle. Because the horizontal position of the motor is adjustable, the transmission chain can be adjusted independently of the rear wheel chain.

Abstract: An apparatus for deterring instability of a motorcycle comprising: a support member; a stabilizer link communicating with the support member, and a frame bracket communicating with the stabilizer, wherein the stabilizer link maintains a substantially constant positional relationship between the support member and the frame bracket.

Abstract: A two wheeled vehicle has a frame assembly. The frame assembly comprises a backbone style frame. A power unit is mounted to the frame. A space is defined between the power unit and the frame such than an auxiliary component can be positioned within the space.

Abstract: A power unit of a motorcycle includes a case that contains a centrifugal clutch 34. A support member is disposed below the case to support first and second foot rests that extend laterally of the case. The case has an underside and at least one boss that extends downward from the underside at a location generally below the centrifugal clutch. The support member is secured to the at least one boss.

Abstract: A motorcycle features a frame that includes a center tubing member that has front and rear end portions, a lower part in between the front and rear portions, the center tubing member having an overall length and occupying a plane. A plurality of laterally extending tube sections each have a length that is shorter than the length of the center tubing member, each shorter tube section having first and second ends that are connected to the center tubing member at spaced apart positions. The laterally extending tube sections include a first and a second plurality of shorter tube sections, the first plurality being connected to the center tube at a position in front of the second plurality of the shorter tube sections. A steering assembly includes a front fork, the steering assembly being pivotally attached to the front end portion of the center tube at a provided pivotal connection. A front wheel is carried by the front fork.

Abstract: A swing arm support structure is provided in a motorcycle, in which first and second support arm portions are provided on a front portion of a swing arm. The support arm portions are pivotally supported by a power unit through first and second pivot shafts, so that rigidity and strength of the paired support arm portions is ensured. A flange is formed on the first pivot shaft, which extends at least partially up to an outer edge of a power unit case and projects radially outwardly from an end portion of the first pivot shaft adjacent the case. The flange portion is removably attached to the case. An outer end of an output shaft extends through and is supported by the first pivot shaft, and this outer end projects outwards of the first support arm portion. A drive gear is fixed to the outer end portion of the output shaft.

Abstract: An engine support bracket for a motorcycle is formed as an L-shaped channel member that is horizontally mounted on a vehicle body frame. Mounting portions of an engine are mounted on the L-shaped channel member and are fastened to the L-shaped channel member using a bolt. With this arrangement, assembling of the engine onto the vehicle body frame can be completed with a simple operation, and hence, the operability in assembling the engine is enhanced. Further, as parts for connecting the engine to the vehicle body frame, only the L-shaped channel member need be provided. Thus, the number of parts is decreased thus also providing a simple structure. Further, a head of the bolt and a nut, which fix the engine to the vehicle body frame, do not appear on a side surface of the mounting portions of the engine. Hence, the appearance of the motorcycle is enhanced.

Abstract: In a motorcycle in which an engine body of an internal combustion engine is rubber-mounted on a vehicle body frame, to permit the rider(s) to enjoy a feeling of pulses. A rod-like frame member mounted at its one end to an engine body is abutted at its other end on a bottom plate of a rider's seat.

Abstract: A motorcycle can include a frame having first and second side frame members. A swing-type motor unit can be mounted on the frame for up and down swinging movement. The frame can include cross members disposed on two sides of a pivot connecting the motor unit to the frame.

Abstract: A motorcycle has a frame and a power unit. The frame comprises a main frame member extending rearward from a steering head pipe. The power unit comprises a drive source, power transmission devices attached to the output end of the drive source, and a casing that houses the power transmission devices and that is suspended from the main frame member. The casing of the power unit comprises a recess opening toward the main frame member. A boss is formed on the bottom of the recess and is suspended from the main frame member.

Abstract: A power unit supporting structure for minimizing rotational vibration about the center of gravity of a power unit, and secondary vibration in the direction of a cylinder axis line of the power unit. The structure includes a link mechanism having a first frame side link swingably connected to a first pivot on the side of a rear frame, and first power unit side links swingably connected to a third pivot on a side of the power unit. The first frame side link and the first power unit side links are swingably connected by a second pivot. A first line segment connecting the first pivot and the second pivot is disposed approximately perpendicular to a cylinder axis line. A second line segment connecting the second pivot and the third pivot is approximately parallel to a third line segment connecting the third pivot and the center of gravity of the power unit.

Abstract: A structure for supporting a swing arm in a motorcycle is provided in which a power unit swingably supports a front portion of the swing arm via a first pivot of a cylindrical shape that is coaxial with an output shaft of the power unit and a second pivot that is coaxial with the first pivot. The number of parts used are reduced and the removal and installation of the swing arm is facilitated. An output shaft, an outer end portion of which projects outwardly of a swing arm, is connected to a final transmission member of a reduction transmission and is capable of removal or insertion in an axial direction, while being incapable of relative rotation about an axis. A first pivot is removably mounted on a power unit. A second pivot is removably secured to the power unit PA or the swing arm.

Abstract: To enhance a degree of freedom in the shape and the design of a swing arm without being influenced by the variation of a part for supporting an exhaust muffler on the side of the swing arm and a part for coupling a rear cushion unit to the side of the swing arm in a compact vehicle, a cushion bracket coupled to a lower end of the rear cushion unit and a muffler bracket that supports the exhaust muffler are provided as separate elements from the swing arm and are attached to the swing arm.

Abstract: A motorcycle design that easily secures space for exchanging tires. A unit-swing type, rear wheel driving power unit is disposed on one side of a rear wheel in a transverse direction and has a swing fulcrum in front of a rear wheel axle, and a right and left pair of rear suspension units are disposed on right and left sides of the rear wheel. An installation height of the rear suspension unit on an opposite power unit side is higher than an installation height of the rear suspension unit on a power unit side, and an installation position of the rear suspension unit on the opposite power unit side in a width direction of the vehicle body relative to the rear wheel is more inside than an installation position of the rear suspension unit on the power unit side in the width direction of the vehicle body relative to the rear wheel.

Abstract: A motorcycle has an engine mounting structure in which a rear wheel supporting swing arm is vertically swung together with a rear wheel, and in which both sides in the vehicle body width direction of a vehicle body side bracket provided in a vehicle body frame are clamped between a left-right pair of engine-side brackets provided on an engine and the engine is mounted to the vehicle body side bracket through elastic members. The vehicle body frame includes a left-right pair of auxiliary brackets disposed on both sides of the vehicle body side bracket, with an interval therebetween. The left and right engine-side brackets are clamped by the auxiliary brackets. An engine supporting bolt is made to penetrate through the vehicle body side bracket, the left and right engine-side brackets and the left and right auxiliary brackets, whereby the brackets are connected to each other.

Abstract: In a power train supporting apparatus and method for an automotive vehicle, at least three mount portions support a power train constituted by an engine and a transmission on a frame of a vehicle body in such a manner that the output axle of the engine intersects a center line of a vehicular longitudinal direction as viewed from a top of the vehicle. The three mount portions comprise engine front and rear side mounts arranged on a vehicular front side and a vehicular rear side with respect to the engine and a transmission side mount arranged in the vicinity of the transmission. The mounts are arranged in such a manner that a distance from a weight center of the power train to each of the engine front and rear side mounts is shorter than a distance from the weight center of the power train to the transmission side mount.

Abstract: A frame structure for a motorcycle includes a front fork which journals a front wheel and that is capable of being steered and supported by a head pipe. Front end portions of a pair of right and left pipe members are connected contiguously to the head pipe and extend downwardly and rearwardly from the head pipe. The pair of right and left pipe members each have a substantially prismatic cross sectional shape and are each bent at their longitudinally intermediate portions so as to be outwardly convex with respect to the sides of the motorcycle frame. An engine is disposed between lower portions of both pipe members in an engine mounting space. The present invention narrows the distance between the upper portions of the right and left pipe members and effectively increases the space between the lower portions of the pair of right and left pipe members.