Limestone turntable, help needed with motor and drive

[jayme]

that 0.5sec period chart looks super clean and regular. what is your ratio of platter to pulley size?

it could be some travel procession of the platter bearing. I have seen a fine line between how smooth a platter bearing is vs how tight the bearing sleeve tolerance is.

 

[EC8010]

That looks very regular in #317. You know the picture I mean; that must be trying to tell you something. Other than that, looks like the drain cleaner isn't such a good idea after all. Sorry about that.