This one is probably my favourite, and I'm surprised it hasn't got more traction. Three separate sequences on geared platters driven by the main turntable. Drums, chords, bassline. Ratios 1:2 and 3:4
The chord sequence changes slightly by the end of the video as one of the plastic arc segments slips out of position a bit.

Also interesting to see youtube's stats. clip which has had most views was featured on a content aggregate site, so drew in a lot of new views from outside of the platform.
https://theawesomer.com/using-a-turntable-as-a-drum-machine-sequencer/801450/