For who would be interested here is some more information.
The construction is mounted on two turn tables, a Jost 850L (price 300 euros) and a Jost 400L (price 140 euros), see pictures below. These turntables will be fixed in the floor.
The 400L is connected with the motor. The axis of the motor itself will stand still and the rest of the motor will turn. This way the platform can turn indefinitely. Power is supplied by turning contact-points (see http://www.sleepringen.nl/compacte_slee ... 45___.html
for more information)
The 850L is added for extra stability.
The motor is an AC-motor of SEW with following specs:
- speed 10rpm
- torque 220NM
- power 370W
- build in encoder (24 pulses per revolution)
- price: about 700 euro's
- further detais be found in motorspecs.pdf
The motor is driven a Siemens G110 invertor.
For the moment the motor is already driven by X-sim through a VM140. Pictures and a video will follow soon. It will get interesting when teh construction is finished and real testing can begin. I think that will by the end of february.