This mechanism in:- horizontal orientation can be use as the tri-star wheel set. Rolling mode is used on a flat surface, acting as any normal wheeled vehicle.
Climbing mode is useful, when encounters enough resistance to start climbing.
- vertical orientation can be use as base for whirligig toy, rotating around own axis.
This set has a concentric drive arrangement to provide separate power for both rolling and stepping modes of operation. In this set Technic Beam 1 x 5 Thin with Axle Holes on Ends is used. However, manipulating with length of this Beam | Liftarm you can adjust the length of the arm.
