Reconfigurable wheeled vehicle

1. A ride-on vehicle comprising:

at least one front wheel;

at least two rear wheels mounted on a rear wheel axle;

pedals and a torque transfer system for transferring torque from said pedals to at least one of the rear wheels; and

a frame member selectively positionable in a first position proximate said rear wheel axle and a second position spaced from said rear wheel axle, wherein said children's ride-on vehicle is configured to be converted from a first, stabilized riding position in which said rear wheels are spaced apart on said rear axle in a tricycle configuration, to a second bicycle-like riding position, in which said rear wheels are in close proximity to each other on said rear wheel axle.

2. The ride-on vehicle of claim 1 , wherein said torque transfer system includes a drive chain or belt operatively connected to said rear axle, and wherein said torque transfer system is pivotable relative to said frame.

3. The ride-on vehicle of claim 1 , further including a pivot member pivotally connected to said frame and said rear wheel axle such that said selective positioning between said first position and said second position includes pivoting said pivot member and said rear wheel axle relative to said frame member.

4. A ride-on vehicle comprising:

at least one font wheel;

at least two rear wheels mounted on a rear axle;

a frame supported by said at least one front wheel and said at least two rear wheels;

a torque input mechanism;

a torque transfer mechanism for transferring torque from said torque input mechanism to at least one of said rear wheels;

wherein the ride-on vehicle is convertible between a first tricycle configuration in which said rear wheels are spaced apart on said rear axle and a second bicycle configuration in which said rear wheels are in close proximity to each other on said rear axle.

5. The ride-on vehicle of claim 4 wherein, in said first tricycle configuration, said rear wheels are positioned outside of said frame and wherein, in said second bicycle configuration, said rear wheels are positioned inside said frame.

6. The ride-on vehicle of claim 4 , wherein said rear axle and said rear wheels are separated from said frame to convert between said first tricycle configuration and said second bicycle configuration.

7. The ride-on vehicle of claim 6 , wherein said torque input mechanism includes pedals, a pedal crank axle, and a drive chain or belt.

8. The ride-on vehicle of claim 7 , wherein said torque input mechanism is operable to transfer torque between said pedal crank axle and said rear wheels.

9. The ride-on vehicle of claim 6 , further including a pivot member pivotally connected to said frame and connected to said rear axle.

10. The ride-on vehicle of claim 9 , wherein said rear axle and said rear wheels are separated from said frame by pivoting said pivot member about said frame to convert between said first tricycle configuration and said second bicycle configuration.

11. The ride-on vehicle of claim 5 , wherein said frame includes a rear axle lock for releasably securing said rear axle to said frame.

12. The ride-on vehicle of claim 11 , wherein said ride on vehicle is converted between said first tricycle configuration and said second bicycle configuration by unlocking said rear axle from said rear axle lock, pivoting said rear axle relative to said frame, pushing said rear wheels towards each other along said rear axle, pivoting said rear axle back to said rear axle lock and relocking said rear axle with said rear axle lock.

13. A ride-on vehicle comprising:

at least one front wheel;

at least two rear wheels mounted on a rear wheel axle;

a frame member selectively positionable in a first position proximate said rear wheel axle and a second position spaced from said rear wheel axle, wherein said children's ride-on vehicle is configured to be converted from a first, stabilized riding position in which said rear wheels are spaced apart on said rear wheel axle in a tricycle configuration, to a second bicycle-like riding position, in which said rear wheels are in close proximity to each other on said rear wheel axle; and

a pivot member pivotally connected to said frame member and said rear wheel axle such that said selective positioning between said first position and said second position includes pivoting said pivot member and said rear wheel axle relative to said frame member, wherein said pivot member includes a torque transfer system for transferring torque from an input device to at least one of the rear wheels.

14. The ride-on vehicle of claim 13 , wherein said input device includes at least one of a pedal, a crank axle, and a drive chain or belt.

15. A ride-on vehicle comprising:

at least one front wheel;

at least two rear wheels mounted on a rear wheel axle; and

a frame member selectively positionable in a first position proximate said rear wheel axle and a second position spaced from said rear wheel axle, wherein said children's ride-on vehicle is configured to be converted from a first, stabilized riding position in which said rear wheels are spaced apart on said rear wheel axle in a tricycle configuration, to a second bicycle-like riding position, in which said rear wheels are in close proximity to each other on said rear wheel axle; and

pedals and a torque transfer system including a drive chain or belt operatively connected to said rear wheel axle, wherein said torque transfer system is pivotable relative to said frame.