Abstract: Space-saving in an automobile or the like provided with a battery is achieved. Design flexibility of an automobile or the like can be improved. An electric power control method or an electric power control system capable of utilizing electric power efficiently is provided. It is an electric power control system of an automobile including a car body, a first battery, a second battery, and a control unit. The control unit obtains states of charge of the first battery and the second battery, determines whether or not a difference between remaining capacities of the first battery and the second battery exceeds a predetermined value, and controls transmission of electric power between the first battery and the second battery, in the case where the difference in the remaining capacities exceeds the predetermined value, to be made such that the remaining capacities are close to each other.

Abstract: An aspect of the invention provides a folding bicycle (10) comprising a first frame section (12a); a second frame section (12b) movably mounted to the first frame section so that the first and second frame sections may be moved relative to each other from an unfolded position to a folded position; a front wheel (40) mounted to the first frame section; a rear wheel (42) mounted to the second frame section; a chainset (48) mounted to the first frame section comprising a pair of crank arms (48a) fixed to a bottom bracket axle (74) and defining a crank shaft axis orthogonal to the first and second frame sections; wherein, the bottom bracket axle comprises first and second axle members (74a) extending orthogonally to the crank arm axis and a bridge portion (74b) connecting the first and second axle members, the bottom bracket axle defining a void between the first and second axle members, and wherein, when in a folded position the front and rear wheels are positioned at least partially within the void defined betw

Abstract: The invention discloses a manual folding telescopic electric scooter, which belongs to the technical field of medical equipment, and includes a front axle assembly, a slide rail fixing plate, a slide fixing plate and a rear frame which are sequentially connected. After the matching, the slide rail fixing plate slides inside the slider fixing plate to complete the expansion and contraction; a fixed seat is symmetrically arranged on the rear frame, and the fixed seat is respectively connected to the seat support seat through the corresponding rotating plate. After cooperation, the seat supporting frame is fixed and fold by locking or unlocking the rotating plate. The invention has a lightweight body, which can be easily folded and retracted, and the volume is small after being folded and retracted. The manual folding telescopic electric scooter adopts electromagnetic automatic braking. The overall simple design is convenient and practical.

Abstract: A bicycle and frame are disclosed, including a unitary front frame and a rear frame. The front frame includes a down tube rigidly connected to a head tube, a steerable front wheel assembly, and a crossbar rigidly fixed to one or both of the head tube and the down tube. The down tube is connected to the rear frame at a pivot proximate the bottom bracket shell. The rear frame includes a seat tube, a bottom bracket shell and a chainstay, all rigidly connected at the bottom bracket shell. A frame lock is disposed at the rearward end of the crossbar, for locking to the rear frame to substantially immobilize the pivot, placing the frame in a riding condition. The frame lock, when disengaged, facilitates relative movement of the front frame and the rear frame towards each other about the pivot, in a common vertical plane, to place the frame in a collapsed position, such that the down tube lies alongside the seat tube and the front frame and the rear frame are nested.

Abstract: A child seat for riding vehicles comprising a cross beam, a front fork, and a cushion disposed on the cross beam, a foldable armrest being mounted at the connection position between the cross beam and the front fork, a position-adjustable bearing beam which is erected on an oblique vehicle pipe being disposed on the front fork, reversible pedals being disposed at the bottoms of the two side plates of the front fork and an axle connection member connected to a seat pipe of the riding vehicle. The angle between the cross beam and the front fork is adjustable, and the child seat realizes fast and toolless installation and remove.

Abstract: A bicycle front fork adjustment device includes two legs and each leg includes a dropout which includes a first portion and a second portion. The second portion extends from the first portion in a direction away from the first portion. A room is formed in outside of each of the dropouts and located corresponding to the first and second portions. A first hole and a second hole are respectively defined through the inner bottom of the room, and respectively located corresponding to the first and second portions. The room forms an opening via which an adjustment member is adjustably located in the room. The adjustment member includes a passage which is located corresponding to the first or the second hole by adjusting the adjustment member between a first position and a second position in the room.

Abstract: A two-wheeled, variable configuration bicycle having a frame, a handlebar, a saddle, pedals with pedal cranks and a drive gear rotatably mounted on the frame, a front wheel mounted on the front fork, a rear wheel with a sprocket mounted on a rear fork. The bicycle includes the upright configuration and the recumbent configuration, and in recumbent configuration, the bicycle provides support for the back of the cyclist. The frame (2, 2?) are provided two front mounting locations for attaching the front fork (14), wherein the first front mounting location is provided for attaching the front fork (14) in the upright configuration, and the second front mounting location is provided for attaching the front fork (14) in the recumbent configuration. The frame (2, 2?) are provided two rear mounting locations for attaching the rear fork (17).

Abstract: A vehicle frame's coupler structure that connects separable frames for easy assembly and disassembly, at a low cost. Further, the couple structure can provide a vehicle that is easy to operate, without affecting the user when in use. The vehicle frame's coupler structure includes combining a Front-side Coupler Inner Face (8) with Rear-side Coupler Inner Face (9), and after making sure all components of (8) and (9) are in place (no protruding edges, etc.), and using Bolt (15) to fasten Part (6) with Part (7). The end result is the coupler system of the vehicle.

Abstract: A system includes a bicycle and a container including an opening. The bicycle is movable between an unfolded position and a folded position. The system includes a first member supported by the container in the container and positioned to engage the bicycle, and a second member supported by the container in the container and positioned to engage the bicycle spaced from the first member. The first member is movable relative to the second member toward and away from the opening.

Abstract: A foldable bicycle is disclosed herein which can be unlocked to fold. It comprises a main frame having a first connecting rod and a second connecting rod, a first folding joint between the first connecting rod and the second connecting rod and having a first outer shell, a second outer shell, an engaging unit, an elastic member, a press button and a cam locking member, a front wheel rack connected to a front end of the first connecting rod, a front wheel connected to the front wheel rack, and a rear wheel connected to a rear end of the second connecting rod.

Abstract: A self-locking device for hanging objects on a mounting surface is disclosed. The self-locking device includes a mounting bracket and a locking arm member engaged with a track portion of the mounting bracket. The track portion comprising a pair of guide portions, a pair of lip portions extending from a lower end of the guide portions, a pair of rotation portions extending from an upper end of the guide portions, and a slot extending between the pairs of guide portions, lip portions and rotation portions. The arm member being mated with the track portion such that the arm member is translatable along the track portion. The arm member comprising a tip portion, a base portion positioned at least partially within the slot, and at least two pairs of projections extending from the base portion that engage with one of the pairs of guide portions, lip portions and rotation portions.

Abstract: A bicycle folding mechanism includes a frame, a stem, and a front fork. The frame includes a front tube at an end thereof. The stem is inserted into the front tube. The stem is connected and pivotal relative to the frame. The stem has an end, which is adjacent to the frame, connected with a connecting seat. The front fork includes at least one connecting end and at least one front end on opposite ends. The at least one connecting end is connected and pivotal relative to the connecting seat such that the front fork is pivotal relative to the connecting seat. The front fork is pivotal between a deployed position in which the at least one front end is positioned away from the frame and a folded position in which the at least one front end is positioned adjacent to the frame.

Abstract: A bicycle frame assembly includes a frame including a first segment, a second segment connected to the first segment at a first hinge, and a third segment connected to the second segment at a second hinge. A synchronization cable extends through the second segment from the first hinge to the second hinge.

Abstract: A bicycle includes a frame having a first segment and a second segment each elongated along a longitudinal axis. A hinge includes a first face on the first segment and a second face on the second segment. The first face and the second face are rotatable relative to each other about a rotational axis. The rotational axis extends at a non-right angle relative to the longitudinal axis.

Abstract: A fluid flow control structure for a bicycle device comprises a fluid chamber structure and a piston. The fluid chamber structure includes a tube member at least partly defining a first chamber, a third chamber, and a fluid passage for changing volumes of the first chamber and the third chamber. The tube member has a longitudinal axis. The fluid passage includes a minimum fluid passage. The piston is movably disposed in the tube member in a telescopic direction of the longitudinal axis. An aperture rate is defined by dividing an area of the minimum fluid passage by a flow rate. The flow rate is defined by fluid volume passing through the minimum fluid passage as the tube member moves relative to the piston at 1.0 mm. The aperture rate is equal to or greater than 0.1.

Abstract: A powered vehicle has a rear frame assembly and a front frame assembly that are pivotally attached to one another, and can be pivoted from a normal fully-extended operating position to a folded position in which the frame assemblies are positioned substantially adjacent to one another, effectively reducing overall vehicle length to about half. One or more latch members lock the front and rear frame assemblies in the fully-extended, normal operating position, and they may be used to lock the frame assemblies in the folded position. The seat support structure may be integrated with the front and rear frame assemblies such that pivoting the frame assemblies toward the folded position collapses the seat support. The steering tiller may also be collapsible toward the front frame assembly. The rear wheels may be mounted on a transaxle that is pivotally mounted on the rear frame assembly. An extendable handle may be provided to assist in the folding operation and to tow the collapsed vehicle on its anti-tip rollers.

Abstract: A universal electric vehicle frame configured to be exchangeably coupled to a plurality of different types of sets of wheel assemblies to selectively form a plurality of different types of electric vehicles including an electric scooter, an electric skateboard, and an electric bicycle. The universal electric vehicle frame includes an encasement for housing one or more batteries to power the electric vehicles. At least one of the wheel assemblies includes an electric motor powered by the batteries, and configured to turn a wheel of the wheel assemblies.

Abstract: The teachings provided herein are generally directed to compact vehicle drive mechanisms that can be used in the design of a foldable, carry-on vehicle. The compact drive mechanisms presented herein, for example, have contributed to the advent of the compact, carry-on bicycles set-forth in the teachings which include drive-and-steering units and drive-and-chassis units.

Abstract: A foldable velocipede for ease of stowage includes a bicycle that comprises a frame. The frame has a top tube and a down tube. The top tube and the down tube each comprise a front section and a rear section. Each of a pair of rotators is coupled to and extends between a respective front section and an associated rear section. The rotators are selectively positionable in extended configurations, wherein each front section extends linearly from an associated rear section and the bicycle is configured for riding. The top tube and the down tube also are selectively positionable in folded configurations, wherein each front section is positioned substantially adjacent to an associated rear section and the bicycle is configured for stowage. The improvement is the pair of rotators that is positioned singly in the top tube and the down tube such that the bicycle is reversibly foldable.

Abstract: A folding bike designed such that when the bicycle is folded, the front and rear frame structural members bypass each other in a non-overlapping manner except at folding and fastening positions using an axis of rotation at or near the seat tube, wherein the folding bicycle maintains a rigid riding position using an innovative fastening mechanism positioned to fasten by actuation of a member located not above the uppermost surface of the front frame, and which may be equipped with primary and secondary retention wherein the secondary retention may automatically engage when the bike is unfolded to the operative riding position.

Abstract: A motorized foldable bicycle assembly arranged to be collapsible from an elongated four-sectioned segmented frame arrangement with a set of electronically controlled motorized front and rear wheels spaced longitudinally apart on the elongated frame arrangement. The front wheel and the rear wheel are arranged in an aligned, side-by-side adjacent configuration with a steering column supported handlebar arrangement correspondingly collapsed in a skewed or misaligned orientation in a space between the side-by-side wheels when folded up in an unridable configuration. The segmented frame arrangement generally forms a “M” configuration in the bicycle's folded and collapsed configuration.

Abstract: An adjustable bicycle frame for change in the riding modes is provided with a bottom bracket secured to pedals; a seat tube extending upward out of the bottom bracket; a chain stay extending rearward out of the bottom bracket and the seat tube; a rear wheel rotatably secured to the chain stay and contacting the ground; a head tube with a stem pivotably secured thereto; a fork pivotably secured to the head tube and extending downward; a front wheel rotatably secured to the fork stay and contacting the ground; a rearward inclined telescopic tubing including first and second tubes. After changing length of the telescopic tubing, a length between the front wheel and the rear wheel is changed, an inclined angle of the seat tube is changed, and an inclined angle of the head tube is changed coherently, thereby implementing a racing mode or a slow, urban riding mode.

Abstract: A foldable bicycle includes a main frame, a front frame, a swingable middle frame, and a rear strut. The main frame includes a front casing, a middle pivoting member, and a rear pivoting member. The front frame is inserted into the front casing. The swingable middle frame includes an upper section, a middle section pivotally connected with the middle pivoting member, and a lower section including a guiding groove. The guiding groove includes first and second groove ends. The distance between the first groove end and the middle pivoting member is greater than that between the second groove end and the middle pivoting member. The rear strut includes a first end pivotally connected to the rear pivoting member and a second end connected to a slider. The slider is slidably received in the guiding groove and capable of being selectively moved between the first and second groove ends.

Abstract: The present invention relates to a coupling method for a separable bicycle, in which the front wheel and the rear wheel are easily separated from and coupled to each other such that the front and rear wheels are firmly coupled to each other even if the separable bicycle is operated for a long period of time.

Abstract: An adjustable bicycle frame for change in the riding modes is provided with a bottom bracket secured to pedals; a seat tube extending upward out of the bottom bracket; a chain stay extending rearward out of the bottom bracket and the seat tube; a rear wheel rotatably secured to the chain stay and contacting the ground; a head tube with a stem pivotably secured thereto; a fork pivotably secured to the head tube and extending downward; a front wheel rotatably secured to the fork stay and contacting the ground; a rearward inclined telescopic tubing including first and second tubes. After changing length of the telescopic tubing, a length between the front wheel and the rear wheel is changed, an inclined angle of the seat tube is changed, and an inclined angle of the head tube is changed coherently, thereby implementing a racing mode or a slow, urban riding mode.

Abstract: A folding bicycle having a frame which extends in the main plane of extent, a front wheel which can be pivoted about a first axis which extends perpendicularly with respect to the main plane of extent, and a rear wheel which can be pivoted about a second axis which extends perpendicularly to the main plane of extent, wherein the frame has a joint such that the front and rear wheel can be pivoted with respect to one another about a third axis which extends perpendicularly with respect to the roadway.

Abstract: A foldable bicycle includes a frame, a front wheel assembly, and a rear wheel assembly. The frame defines a pivot axis. The front wheel assembly is disposed on the frame and configured to rotate about the pivot axis. The rear wheel assembly is disposed on the frame and defines an opening for receiving the front wheel assembly when the bicycle is folded.

Abstract: A foldable tricycle includes a first frame, a second frame movably coupled to the first frame, and a seat for supporting a rider, wherein the seat operates as an actuator for moving the first and second frames relative to each other. Additionally, a method of handling a foldable tricycle movable between a first position and a second position includes applying a force to the seat of the tricycle, wherein the applied force on the seat causes the tricycle to move from the first position to the second position.

Abstract: A control bar for removable attachment to a traction mechanism is formed by a plurality of elongated bar segments connected end to end, such that the control bar can be formed in a plurality of shapes, and is thereby adapted to be more easily manipulated by a user shifting their body weight to steer and maneuver the propulsion system.

Abstract: An apparatus including a seat post. The seat post can include an upper post, a lower post, a first mechanical energy source, a second mechanical energy source, and a control mechanism. The first mechanical energy source can be configured to contract the lower post and the upper post. The second mechanical energy source can be configured to expand the lower post and the upper post. The control mechanism can be configured to activate the first mechanical energy source to contract the lower post and the upper post to a first predetermined position.

Abstract: Foldable electrical vehicles and related charging infrastructure are described. The foldable electrical vehicle generally includes three structural arms (front and rear wheel-bearing arms and a seat-bearing arm) that are pivotally interconnected along their lengths such that they may be pivoted between a closed position wherein the three arms are disposed roughly parallel to each other in a compact folded configuration, and an open riding configuration wherein an angular relation is formed between the arms.

Abstract: A frame unit for a bicycle may include a left frame body in which a part of an adjusting portion, a part of a seat tube, a part of a frame, and a left stay are integrally formed; and a right frame body in which a part of the adjusting portion, a part of the seat tube, a part of the frame, and a right stay are integrally formed, in which the seat tube and the frame are integrally formed by adjusting a length of the adjusting portion, and the left frame body and the right frame body are coupled integrally.

Abstract: A folding handlebar mechanism includes a steering tube, a stem assembly mounted on the steering tube, two handlebars rotatably and slidably mounted into two distal ends of the stem assembly, a repressed member abutted against the stem assembly, and a positioning assembly. The positioning assembly is operable between a tighten mode and a loose mode to cause the two handlebars to be selectively rotatable and slidable with respect to the two opposite ends of the stem assembly.

Abstract: The teachings provided herein are generally directed to compact, carry-on vehicles configured to shield a user from the drive mechanism. The vehicles are generally foldable, carry-on vehicles having a chassis that converts to a protective carry-on case for the vehicle. The vehicles are foldable with a drive mechanism that is (i) compact, (ii) at least substantially enclosed, (iii) clean, and (iv) generally shielded from contact by the user in the collapsed configuration.

Abstract: A bicycle comprising a Frame (1), a Front Wheel (9), a Rear Wheel (10), a Drivetrain Assembly (11), a Pedal Assembly (6), a Seat Assembly (5), Handlebar Assembly (7), a hard Tail (2) or a movable Tail (2) which is supported by a Suspension Assembly (4) and a hard Fork (3) or a telescopic Fork (3), the mutually slidable parts of which are interconnected by a Suspension Assembly (4). Further, a center of the Front Wheel (9), a center of the Rear Wheel (10), a Bottom Bracket (6.1) center, a Seat (5.1) connection and a Handlebar (7.1) connection form the vertices of a pentagon, the shape of which is slope-modifiable by at least one positionally adjustable vertex, when Suspension Assemblies (4) are unloaded.

Abstract: The invention relates to a compact, foldable bike with small wheels and a bicycle drive for driving the rear wheel, comprising a traction mechanism or a spur-gear transmission, driven by a crank, the distance of the bottom-bracket axle to the rear-wheel axle being larger than half the outer diameter of the rear wheel. The bicycle exhibits a front frame part and a rear frame part that are rotatably connected to each other by a folding hinge that is aligned at right angles to the ground plane, whereby the front frame part, the rear frame part, and a front-wheel fork, in the folded state, seen laterally, form the sides of a triangle having the following characteristic combination of features: The bicycle is ridden while standing up, the driving wheel and the output wheel of the bicycle drive are arranged on the same side of the bicycle frame and the steering tube exhibits a lower and an upper steering tube, that in the folded state of the bicycle are folded-in laterally beside the front wheel.

Abstract: The present invention provides a bicycle that includes a frame that is specifically design to accommodate different axle configurations. The bicycle includes a wheel including a wheel axle and a bicycle frame comprising a wheel support including an axle opening having a first width and an axle slot contiguous with the axle opening and having a second width less than the first width. Preferably, a portion of the wheel axle positioned in the axle opening has a diameter that substantially matches the first width. The present invention also provides a method of changing an original wheel of a bicycle. The method comprises removing the original wheel from the wheel support, positioning a converter in the axle opening, providing a replacement wheel having a replacement hub that has a replacement axle, and sliding the replacement axle through the axle slot and into the receiving area defined by the converter.

Abstract: A foldable bicycle comprises a frame having a rear portion supporting a rear wheel about a rear axis of rotation, a front portion supporting a front wheel about a front axis of rotation and a hinge system. The hinge system comprises a first part arranged on the rear portion and provided with a first plane surface, and a second part arranged on the front portion and provided with a second plane surface. Inside the first and second parts an actuator mechanism is arranged for actuating a stud that locks or unlocks said parts. The first plane surface and the second plane surface are disposed in a plane that is slightly inclined relative to a horizontal plane, said inclined plane being configured to facilitate pivoting of the front portion relative to the rear portion towards a folded position, in which the rear and front axes of rotation are in alignment.

Abstract: A folding vehicle structure includes a frame having a plurality of members. A first member intersects a second member at a first pivot point. A third member, spaced from the first and second members, intersects a fourth member, which is also spaced from the first and second members, at a second pivot point. The frame includes a first cross-member extending between the first and second intersection points. The frame is collapsible.

Abstract: The invention relates to a locking device (5) for locking together a first tube (2) and a second tube (3), the first tube being slidably received in the second tube, the locking device comprising at least one rod (10) mounted to move into two positions and a cam system made up of at least two cams (6, 7, 8, 9) that are mounted on the first tube to pivot either into a first position in which the cams are not in contact with the second tube and allow the first tube to slide inside the second tube, or into a second position in which each of the cams exerts pressure on the inside face of the second tube and prevents the first tube from sliding inside the second tube. The rod is assembled with the cam system and is configured so that it at least moves the cams into their first position, a repositioning system being configured to return said cams into their second position. The invention also relates to a bicycle (1) equipped with such a locking device (5) arranged between a saddle post (2) and a saddle tube (3).

Abstract: The invention relates to a bicycle frame made of fiber-reinforced material, particularly of plastic reinforced with carbon fibers, having a rear wheel suspension for supporting the rear wheel. According to the invention, a receptacle is formed on at least one of the two chain stays of the rear wheel suspension, in which a replaceable adapter plate adapted to the hub of each rear wheel to be used is removably fastened, in which the axle of the rear wheel can be supported.

Abstract: A folding device includes a main body, two connecting members respectively pivotally connected to the main body, and a locking assembly. Each connecting member includes an engaging portion. The locking assembly includes first and second hooking members, a lever, and an axial member. The first hooking member and the lever are pivotally connected to the main body. The axial member is inserted through the main body, the first hooking member and the lever. The second hooking member is pivotally connected to the lever. The first hooking member includes a first hooking portion, and the second hooking member includes a second hooking portion. The lever is pivotable with respect to the main body between locking and releasing positions.

Abstract: A motor vehicle includes a body configured to house a removable frame, a spare wheel, a removable headrest, and a jack. The frame, the spare wheel, the removable headrest, and the jack can be assembled into a bicycle. Thus, the bicycle includes at least one component having a dual use in a motor vehicle.

Abstract: A foldable bicycle provided with a frame, the frame comprising a first arm having a rear end to which a rear wheel is linked, a fork with handlebar to which a front wheel is linked, a bar connecting a front end of the first arm to the fork and hinged to the first arm and a post supporting a saddle and hinged to the first arm. The first arm, the bar and the post are interconnected by transmission elements for simultaneously rotating about the axes between an operative configuration and a carrying configuration. The transmission elements comprise a first engagement angular sector rotatably coupled with said post via first linkages, and a second engagement angular sector in rotary engagement with the first engagement angular sector and rotatably coupled with the bar via second linkages.

Abstract: The present invention produces a folding bicycle (1) having a frame (2) which extends in the main plane of extent (24), a front wheel (53) which can be pivoted about a first axis (56) which extends perpendicularly with respect to the main plane of extent (24), and a rear wheel (16) which can be pivoted about a second axis (23) which extends perpendicularly to the main plane of extent (24), wherein the frame (2) has a joint (37) such that the front and rear wheel (53, 16) can be pivoted with respect to one another about a third axis (41) which extends perpendicularly with respect to the roadway (42).

Abstract: A bicycle frame comprising a front triangle and a rear triangle. The front triangle comprises, in turn, the following tubular elements: a seat tube; a top tube; a down tube; and a steering tube. Whereas the rear triangle comprises, in turn, the following tubular elements:—two inclined seat stays and two horizontal chain stays. The frame is characterized in that the elements comprised in the front triangle are manufactured as one single piece, and in that the two chain stays are joined to said front triangle by means of a bushing, which is inserted into a seat, which is obtained in correspondence to a bottom bracket axle.

Abstract: A bicycle having a frame with two sections spaced apart at a distance, one section a left and one a right section, three connection respectively for a saddle, crank and front fork connected to the left and right sections. A rear fork is connected to the frame by a rotatable connection having an axis, and the rear fork can rotate from an extended position to a folded position where a wheel affixed to the rear fork inserts between the left and right sections. The rear fork may also have a series of links and a shock absorber.

Abstract: Embodiments of the invention describe methods, apparatuses and systems related to vehicle frame and component design for efficient and compact packaging. Removable components of a scooter are formed to be able to all be placed within a void of the scooter frame so as to not affect the volume of the scooter when disassembled and packed. Thus, when disassembled, the volume of the packaged scooter is defined by the dimensions of its frame only.

Abstract: A reinforcing and locking device for vehicle frame includes a reinforcing component (2), a connecting component and an eccentric locking component, the vehicle frame comprises a beam (1) and a seat tube (3). The beam (1) can be folded into at least two segments (11, 12). A hinge axle (81), through which various segments of the vehicle beam (1) are hinged with each other, is provided vertically. The reinforcing component (2) is connected to the beam (1) and the seat tube (3). The seat tube (3) is provided with a connecting component. A front end of the reinforcing component (2) is hinged with a front segment (11) of the beam (1), and a rear end of the reinforcing component (2) is connected with the seat tube (3) through the connecting component. The reinforcing and locking device for vehicle frame has good stability, simple structure and low cost.

Abstract: A bicycle frame with removable dropouts includes a bicycle frame having a left seat stay and a left chain stay joined at a left junction, and a right seat stay and a right chain stay joined at a right junction. A left dropout is removably connected to the bicycle frame at the left junction, the left dropout including a body defining an opening for receiving a rear wheel. A right dropout is removably connected to the bicycle frame at the right junction, the right dropout including a body defining an opening for receiving the rear wheel.