OpenScan gear reduced turntable modification

thingiverse

I wanted to scan a quite large and heavy object and the the direct driven turntable turned out to be too fast and it could not handle the mass inertia of the object so I designed a gear reduction which uses the same gear size as the original rotor. For bearing the new turntable, I'm using a pin 6m6x50mm which should fit tight into the bottom part and turn smoothly in the turntable gear. That for you will most likely have to drill up the turn table gear to 6.1mm. The small gear is exaclty the same as for the rotor. I did not change it. I'm using version 2 as the version one has too much clearance to the large gear. In this version the turn table gear is not secured on the pin so rotor angles over 90deg are not possible.