c.architectural
New member
- Joined
- Jan 11, 2018
- Messages
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Anybody have any experience with any of the companies that offer these ? Maintenance problems ? Thanks
Anybody have any experience with any of the companies that offer these ? Maintenance problems ? Thanks
Jay Leno had one installed in his home garage. His show had a feature on his home garage a couple of years ago that showed the installation. Pretty nice thing to have if you have limited space to turn around.
I'd avoid a heavy bearing and heavy monolithic steel disc. Make it like the turntable in your microwave with a separate carriage with numerous wheels. The microwave has 3 wheels, our car turntable could have 30 wheels on several different radii. To make the assembly I just place a curbed round pocket made of concrete, add wheel carriage, segmented steel turntable on top. The steel doesn't need to be one rigid piece as it is supported by 30 wheels.... A 6209 bearing is good for something around 5000 lbs static. Those could be arranged tangentially. Center post around 2" with a 2 bolt flange bearing. Can drive with roller chain sprockets and gear reducer to electric motor. Probably a 1/4 hp motor is enough with the right reduction.
More serious challenges include getting a ~20' steel disk flat enough so all of the rollers contact, forming the concrete so there's no big gaps, rigging the massive thing into place from 10 feet away, and designing everything so it can be leveled shimmed or tweaked into operating position.
Some rotary cow milking parlors use bowling balls for bearings. Cheap and available.
