As Jim Said, a smaller #36 blower can ourperform a #45, or even a #47 vacuum blower. How is that possible you ask?
I'd say the single most reason is most manufacturers use a larger blower to make the carpet cleaner think he is getting a lot more vacuum. Oftentimes, these larger blowers are not turned as fast (RPM), even though they are capable of much more CFM, nor do they have straight flow internal plumbing on the intake and discharge sides, and they do NOT use the over-sized silencer design that I found works quite well.
The PD blower of a TM takes the lions share of horsepower (HP), and to run a blower faster, you need a lot more HP. To increase the lift, again more HP is needed, a lot more. Of course that burns more fuel. But if it's super performance you're looking for, that is the cost for getting it.
I would say the 2.5" hose and wand
glides, have made a huge improvement in TM performance.
Thank you Greenie, and thank you manufacturers who listen to their customers.