[roflyear]

A small rotary pump would be innovative, nothing like that exists currently. Vibe pumps are loud, but they are tested tech and live forever. A drop in replacement rotary pump would have a big market if it can stand up to use.

[Kirby64]

Are rotary pumps that large? From what I can tell, they’re relatively small as long as we’re talking the ones sized for single group machines.

[roflyear]

Yes, they are pretty big. Just the pump alone is larger than the pump + motor for a vibe pump, and the motors for rotary pumps are like 4-5x the size of the pump. So you're really approaching 10x the size, it's kinda wild.