With respect John you can't post questions like that on the other forum it's not what you'd do, it's like talking about your latest girlfriend infront of your ex mother in law.
Now looking at these motors from an objectional point of view would the 6.6" motor being bigger create more air movement than a smaller motor?
Shaun
perhaps you right .
I believe the newer vacs get their performance increase from a newer fan design ( thicker center fan , conical bottom etc ...
in this case ,the two vacs above .... both are conical bottomed , the 6.6 is a two stage with approx 130 lift and 130 cfm .... the ' electro ' is a three stage with aprox 140 ' lift but a slight decrease in cfm ...( although they measured same cfm in the video )
perhaps airwatts reflect working load a little better ... both have around 600
a few other vac have similar performance , some domels , ametek 8.4 has around 700 airwatts but pricey
