Chair seat is swinging on a back axle by the force of legs. The motion of seat transforms by lever mechanism to the dildo, that has two times bigger counterstroke.
See Rocking Chair page.
Chair seat is swinging on a back axle by the force of legs. The motion of seat transforms by lever mechanism to the dildo, that has two times bigger counterstroke.
See Pleasure Chair page.
Legs motions transforms by unique stroking device to fucking strokes of dildo.
See Bicycle page.
The "active rider" is riding Bicycle, the second person is "on a trailer".
See Bicycle with Trailer page.
Training motions on an Exercise Bike transform to fucking strokes of dildo mechanism.
See Exercise Bike page.
The Single Swing is manually-actuated (by the legs force) fucking device. Dildo is installed under the swing board. Dildo penetrates through the hole in the board while jumping on a board.
See Single-Swing page.