Examples of the present disclosure relate to a bicycle configured to easily and efficiently adapt for riders of different sizes while providing both balance bike and pedal bike functionality. An exemplary bicycle is a children's bicycle designed and developed to grow with a child. An exemplary bicycle is configured to enable utility adjustments to a front assembly, among other components, which creates a setup that comfortably accommodates either smaller riders or larger-sized riders. The bicycle is adjustable with minimal effort and without tools, enabling re-configuration on the fly. Further disclosed is an exemplary training wheel device that is attachable to an exemplary bicycle. An exemplary training wheel device extends functionality of the bicycle and assist with training a young child to ride the bicycle.

A ride-practicing bicycle includes: a pedal unit; a bicycle frame having a receiving portion for detachably receiving the pedal; a rear wheel having a sprocket; a chain, wherein the pedal unit includes a rotatably mounted pedal crank to which a chain wheel is attached and has a connecting portion that is connected to the receiving portion of the bicycle frame, and the chain bridges and engages the chain wheel and the sprocket of the rear wheel, whereby the pedal unit and the chain are removably installed in the bicycle frame, and wherein the bicycle frame has a seat stay on a side of the chain wheel, and an entirety or a portion of the seat stay is configured to be removable from the bicycle frame so as to facilitate attachment and removal of the pedal unit and the chain to and from the bicycle frame.

A ride-practicing bicycle includes: a pedal unit; a bicycle frame having a receiving portion for detachably receiving the pedal; a rear wheel having a sprocket; a chain, wherein the pedal unit includes a rotatably mounted pedal crank to which a chain wheel is attached and has a connecting portion that is connected to the receiving portion of the bicycle frame, and the chain bridges and engages the chain wheel and the sprocket of the rear wheel, whereby the pedal unit and the chain are removably installed in the bicycle frame, and wherein the bicycle frame has a seat stay on a side of the chain wheel, and an entirety or a portion of the seat stay is configured to be removable from the bicycle frame so as to facilitate attachment and removal of the pedal unit and the chain to and from the bicycle frame.

Methods of teaching and learning bicycle riding skills are disclosed, including training a student to ride a bicycle comprising positioning a student on a bicycle at the top of an inclined surface with a slope in a range of 8 to 15 degrees and a distance of at least 30 feet, wherein the student straddles the bicycle's seat such that the student's feet engage the inclined surface and the student's hands engage the bicycle's hand brakes. The student releases the brakes and lifts his/her feet from the inclined surface. Under angular momentum, the bicycle moves down the inclined surface while the student steers the bicycle. The bicycle is returned to the top of the inclined surface and the steps are repeated. The student also learns to pedal the bicycle using the inclined surface with similar repeatable steps. Other skills such as starting the bicycle with the pedals are taught.

Methods of teaching and learning bicycle riding skills are disclosed, including training a student to ride a bicycle comprising positioning a student on a bicycle at the top of an inclined surface with a slope in a range of 8 to 15 degrees and a distance of at least 30 feet, wherein the student straddles the bicycle's seat such that the student's feet engage the inclined surface and the student's hands engage the bicycle's hand brakes. The student releases the brakes and lifts his/her feet from the inclined surface. Under angular momentum, the bicycle moves down the inclined surface while the student steers the bicycle. The bicycle is returned to the top of the inclined surface and the steps are repeated. The student also learns to pedal the bicycle using the inclined surface with similar repeatable steps. Other skills such as starting the bicycle with the pedals are taught.

A tricycle may be operable between a first mode of operation steerable by a tricycle rider, and a second mode of operation steerable by an individual pushing the tricycle. A rider handle, in the first mode, may be configured to be rotationally coupled with the stem in a manner permitting a tricycle rider to exert forces on the rider handle and thereby turn the fork, and the rider handle in the second mode, being configured to be rotationally uncoupled from the stem, preventing forces on the rider handle from turning the fork. At least one rotation restricted may be included for preventing the front wheel from turning to a position where the front wheel axis leads the fork axis, and for maintaining the front wheel axis in a position trailing the fork axis both when the tricycle is propelled by a tricycle rider in the first mode and when the tricycle is pushed from behind in the second mode.

A tricycle may be operable between a first mode of operation steerable by a tricycle rider, and a second mode of operation steerable by an individual pushing the tricycle. A rider handle, in the first mode, may be configured to be rotationally coupled with the stem in a manner permitting a tricycle rider to exert forces on the rider handle and thereby turn the fork, and the rider handle in the second mode, being configured to be rotationally uncoupled from the stem, preventing forces on the rider handle from turning the fork. At least one rotation restricted may be included for preventing the front wheel from turning to a position where the front wheel axis leads the fork axis, and for maintaining the front wheel axis in a position trailing the fork axis both when the tricycle is propelled by a tricycle rider in the first mode and when the tricycle is pushed from behind in the second mode.

A pulling tool for a human-powered wheeled vehicle comprising an arm member including a telescoping shaft member and a handle member; and a connecting member configured to releasably connect to a handlebar of the human-powered wheeled vehicle such that the training tool can be used to direct and control the human-powered wheeled vehicle allowing a rider to learn how to operate the human-powered wheeled vehicle, wherein the connecting member includes a shaft receiving member configured to receive the telescoping shaft member, the shaft receiving member connected to a rectangular support element configured to receive a pair of prong members.

A pulling tool for a human-powered wheeled vehicle comprising an arm member including a telescoping shaft member and a handle member; and a connecting member configured to releasably connect to a handlebar of the human-powered wheeled vehicle such that the training tool can be used to direct and control the human-powered wheeled vehicle allowing a rider to learn how to operate the human-powered wheeled vehicle, wherein the connecting member includes a shaft receiving member configured to receive the telescoping shaft member, the shaft receiving member connected to a rectangular support element configured to receive a pair of prong members.

The invention regards a method, a system and a vehicle for analyzing a rider performance. The vehicle is any vehicle that employs a roll angle change for changing its driving direction. Firstly, physical motion parameters of the vehicle in motion are sensed and the measured data is supplied to computing unit. In the computing unit, segments in a time series of measured data are determined by processing the measured data in the computing unit. Each segment corresponds to a rider control behavior and the plurality of such consecutive rider control behavior build a riding maneuver. In the computing unit, the measured data within one segment for at least one of the segments is analyzed by computing at least one characteristic value for the respective segment and/or the sequence of determined segments is analyzed. Finally, an analysis result indicating the rider performance or rider skills is output.