I can't find any diagrams explaining the mechanics of the restaurant (or even exactly what rotates); which upsets me. -Can someone provide more information/pict

I can't find any diagrams explaining the mechanics of the restaurant (or even exactly what rotates); which upsets me. -Can someone provide more information/pictures? Even with amazing balance I don't understand how there isn't massive friction caused by whatever it's running on... Nearly everything says it's a single 1.5hp engine (upgraded from 1hp), however there's a case study by Graybar who did a retrofit in 2013 [0] which makes it very clear that there is (and was) actually _two_ motors, both in play. -once again, if anyone has more information? I'm massively intrigued. "The major problem was that the two existing drives were fighting to share the load – one was lagging and the other leading. The two gear boxes were constantly adjusting according to inputs from the motors, which caused both the noise and roughness during the rotation. The team determined that the best solution was to upsize the motors, drop motor revolutions per minute (RPM) and reduce the reduction ratio with the new gearboxes. So they recommended Schneider Electric drives as well as various automation and control products to the Space Needle engineering staff. The new motors were equipped with encoders feeding the drives in a master/slave configuration. Along with this, all new controls were installed, including a wireless control system. Schneider Electric also provided engineering and software support, both at the integrator and jobsite facilities." >>> edit: I'm wondering what wattage this/these 1.5hp motors are; the Falkirk Wheel is a rotating canal lock up in scotland. It manages to simultaneously lift/lower two canal boats + water 35 meters for only 1.5kWh of energy (and has a pleasing gear system) [1] [2] [0] http://www.graybar.com/documents/graybar-keeps-tables-turning-atop-space-needle http://www.graybar.com/documents/graybar-keeps-tables-turnin... [1] https://en.wikipedia.org/wiki/Falkirk_Wheel https://en.wikipedia.org/wiki/Falkirk_Wheel [2] https://www.youtube.com/watch?v=n61KUGDWz2A https://www.youtube.com/watch?v=n61KUGDWz2A