Most of my mixing is right in 30 or 60 ml bottles and that works for me. Having said that I think I’ve been barking up the wrong tree with the small generators but they are super convenient for small volumes. I noticed from several size charts that mixing capacities increase at rates far higher than I expected with larger generators. Long story short I have some 3/4" and 1" tube on the way. Plus my new top bearing for the Kinematica should be here tomorrow and I should be able to tell when I run that 20 mm generator.
My other concern about going bigger with the Pro Scientific is whether that Dremel motor actually has enough power and RPM . I’ve always questioned whether those moto tools actually develop the claimed speed. I’m using a much larger motor and can go over 100 mls before I notice it struggling.
But, your new unit turning at lower speed with a larger generator sure seems like its the ticket. We’ll soon see. I was back in the shop for a few hours today just piddling around.