The spectators fascinatingly follow the fly of the
ball. Their heads move in time from one side to the other
- until the crank is turned.
- Crank mechanism
- Size: 17 x 6 x 22.5 cm
- 3 construction sheets DIN A 4
- Price: 8.00 Euro
- Code WR061
The rotation of the handle is transmitted to a horizontal lying camshaft.
Two staggered cams transfer the movement to friction wheels, whose vertical
standing shafts move to the right and to the left, the heads of the spectators
move correspondingly. The angle of the cyclic movement is
limited by stop plates.