Yeah if you watch some of his later dust collection videos, he’s using a 3-phase motor and a much larger impeller. The first version of that larger dust collector came apart and he re-made the impeller for it.
I can’t hardly stand to watch the video where he moves the dust collector to the corner of his shop. He’s talking about how much noise it makes from the vibration and then misses an opportunity to mount it to the concrete wall and instead hangs it on a 2x4 partition wall.
Anyway, the impeller build video actually has me pretty excited to get my Maslow working. I got a 5hp (220v) motor from a friend in the HVAC business and I’m itching to try out an idea I have for a dust collector in my shop.