i'm building our les mis turntable right now and will let everyone know how it goes... it is slated to be motorized, but i have a backup for manual power just in case... (i don't know anything about motors, so i'm letting dads take that one!)
i pulled from several different designs and came up with one of my own... essentially, it will be a 22' diameter turntable, two ply, on a central pivot with a ton of 2" rigid casters... i'll post updates as they happen...
as for the motor... well, we'll see what happens!!!
When building revolves ( turntables ) it's usually recommended to use Straight casters rather than swivel . Swivel casters have a tendancies to resist swivelling when under load and since they have to swing off access to reverse direction they tend to get stuck a lot or are very hard to get going after having wiggled around some in there playing posistion. Straight ( or fixed ) castors also help cut down on noise as you don't have the play in them that so many swivel caster do due to the bearing racer that they use to swivel. Mounting the castorplates to the deck or sub-structure and allowing the revolve deck to rotate over them is another excellent way to reduce noise. I have an excellent design < not mine> from a touring show that was 18' in diameter setup in under fiften minutes, held about a ton <literally> of scenery and turned smooth as glass. It used the earlier mentioned pie shaped wedges and a a central post. the casters were mounted on 1x2s radiating out from the central base. I'd be happy to share it with anyone who want's it.
okay, where on earth do i find a 2" flange??? i can't find it anywhere... help!!!