A recumbent cycle whose seat can be quickly repositioned on the frame to provide for adjustable spacing between the seat and the pedal assembly. The seat has a rod which extends rearwardly from the backseat portion thereof at a location near the upper portion of the back seat and the rod is slidably received in a tubular portion of the frame. in one embodiment, the tubular portion of the frame has an aperture extending therethrough, and the rod portion of the seat has a spaced apart series of apertures extending therethrough, any one of which can be brought into alignment with the aperture in the tubular portion. A hand-removable U-shaped clip is provided to secure the seat in a predetermined position relative to the frame by inserting a leg of the clip through the aperture in the tubular portion and an aligned aperture in the rod. In another embodiment, the tubular portion is provided with a hand operated, quick release latching mechanism to secure the rod of the seat in a desired position relative to the tubular portion of the frame. The seat is provided with a pair of spaced apart, downwardly facing C-shaped brackets which partly surround and engage a sleeve that is affixed to a horizontal support bar portion of the frame and which are slideable along the horizontal support bar portion.

A three wheel recumbent vehicle having the steering pivot point of the front axle tilted forwardly about 8.degree. from perpendicular, causing the vehicle from the pivot point back to lean into a turn, and also having the front axle bar constructed with a low center section and end members which radiate upwardly and backwardly to provide room for the user's feet and to add stability on turns by increasing the distance between the center line of the vehicle and the point where the outboard tire touches the road.

An exercise machine with two sets of pedals comprising a frame of a rigid configuration positionable upon a recipient surface such as a floor. A raised support in a box-like configuration extends upwardly from the rearward portion of the frame. A seat portion is positioned upon the support for the receipt of a user. A forward set of foot pedals is secured on a first horizontal axis with respect to the frame adjacent to the forward end thereof. The pedals are adapted to be rotated by the feet of a user. A rearward set of hand pedals are secured on a second horizontal axis with respect to the support adjacent to the upper extent thereof for being held and rotated by the hands of a user. A central drive shaft is located intermediate the first axis and second axis parallel with the forward and rearward ends of the frame. Drive means couple the central drive shaft with the hand pedals and the foot pedals.

A single wheeled trailer for carrying an occupant is provided. The frame of the trailer is comprised of tow bar members of rectangular cross section and two non-symmetrical rear fork members which retain the single wheel. A hitch connected to a driving bicycle tows the trailer. A pedal assembly coupled to the frame enables the occupant to power the trailer wheel. The occupant of the trailer is forward facing and may help power the bicycle or be towed by the prime mover. The frame design allows ease of mounting and dismounting of the child.

An amusement tricycle wherein the operator is transported in an inclining position on a hammock cradle. the cradle is carried by a front wheel which does not pivot relative to the cradle. The cradle and wheel rotate about a downwardly sloping axis to turn. The cradle is supported to the rear by a two wheel buggy. The cradle is mounted on the buggy by a pivot. The pivot rotates about the axis. The buggy in turn, is stabilized by pivotal attachment to the cradle.