This Roller-Coaster, a MOC made with the electrical
Power Function parts (pictures approved for release
by TLG), can perform a 360 degree roll.

I changed the vehicle to permit limited rolling between
pairs of wheels.  It's important to keep the heavy
items (motors and battery box) as close to the wheels
as possible, in order to minimise the moment of the
weight that is trying to pull the vehicle off the
track.  I'll develop the vehicle further to improve
stay-on gravity-defying performance.

Mark Bellis
March 2007