Rama, a compact Killough platform

"The Ramans do everything in threes " Arthur C. Clarke, Rama

Inspired by the work of Leo Dorst and Markus Matern, here is a small Killough platform, named Rama because of its threefold symmetry. More informations on Killough platforms can be found here.

The trick is to use parts from Gigamesh Spybot set (rotor blade liftarms and small tyres) to build the special "bidirectional" wheels.
 

	Without optional bumpers, Rama is probably the most compact LEGO Killough platform down there...
	Bottom view, top view (RCX removed). If only the RCX was triangular shaped to keep this nice symmetry ;o)
	Wheels details. They are far from perfect: there is friction in the small wheels, the tyres sometimes get loose, and the hexagonal shape makes Rama movements somewhat shaky. Nevertheless, the fascinating displacement possibilities of a Killough platform are here as shown in the movies below.
	Bumpers details.