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My first live airflow box test has been posted And I choose the highest performing machine in my collection to show everyone how I calculate nozzle airflow as inexpensively as possible. Bill

Just to make sure I'm understanding you... Shae, You mention that 113 CFM at the exhaust port correlates closely to what you measured with your equipment, right? BUT, that's the exhaust CFM, not the hose or nozzle CFM. If you were only attempting to verify exhaust CFM, then we're good. If you...

We are talking about a water based Rainbow, Right? Shae, "I'd like to see a test of the E2 black with and without hepa." --Rainbows don't use bags, they use water. Yes, I know they have a HEPA exhaust filter, but it just sounds weird to say, "measure your Rainbow without HEPA". "The cfm out...

Shae, Not my tests, but for a Rainbow E2 2-Speed the airflow is 77 CFM from the hose end and probably will drop to 55-60 CFM by the time I would measure it at the power nozzle. My actual tests of a D4C SE shows 42 CFM and D4C SE PE shows 33 CFM at the nozzle respectively. Rainbows have never...

Hi all, If you want to see some of my inexpensive testing equipment, I've posted a new "How To" video on my channel. Bill

After many years of thinking about it and watching many of "Roger's" videos, I decided to start my own YouTube channel. I plan to make mine more of a "How To" and "Watch This" type of channel. At some point, I'll have some videos of how I test, including using an inexpensive anemometer and...

Didn't The Legend II Also have the newer G series hose connection as well? Bill

So no one was surprised that a Panasonic beat the early G series Kirbys for forward effort? Anyone? Anyone? Bueller? Bueller? Bill

I would hope that... The very few people in the world that are interested in vacuums would somehow be able to keep such a great convention focused on the machines rather than petty squabbles and personality differences. Vacuum enthusiasts are so rare that everyone should just appreciate each...

Hard to say but... I can vacuum 3000 square feet of various flooring types once every 3-4 days with 3 humans and 1 dog and only get a palm full of fibers/dog hair combined with a tablespoon of fine dust. I suppose that can be considered clean? Bill

How about some numbers... Jesse, My Heritage II Legend weighs 19 lbs. and my G4 (very similar to a G3) weighs 23 lbs. BUT the Tech Drive makes all the difference when using them. In my test lab, the Heritage II Legend took 3 lbs. of force to push forward on medium pile carpet, while my G4 only...

Comments on the winners and losers The easiest to push was a surprise: The Panasonic MC-UG589! It actually beat the older G series Kirbys by a tiny bit but be warned, it only has 65 CFM of nozzle airflow, so there is a price to be paid. No surprises with the older G series Kirbys as one can...

And Now For The BIG Chart I have classified all my machines by color codes as to pushing effort: GREEN: Light effort. I can vacuum 1500 square feet of medium pile carpet with no problem BLUE: Typical effort. While not bothersome, these machines fall into the average effort category. Some...

These tests were very difficult to get as the forces required to push a vacuum "bounce" all over the place and I had to run them as many as 20 times to obtain a reasonable average figure. The Premise: I wanted to measure (as accurately as possible) two primary forces on the human hand. Static...

Peak HP Ratings Are Mostly Completely made up numbers unfortunately. ShopVac still uses them BUT, they have to report actual steady state HP/Amp ratings as well. 1 HP = 746 Watts, so the max steady state HP any North American machine could have plugged into a standard 15 Amp outlet would be...

If I had that many complaints about my new vacuum I would think that I just bought the wrong vacuum. Spending well over $500 on a machine that you have called out many, many issues, I would have immediately returned it. I sincerely hope you enjoy your expensive purchase, but I have to wonder...

David, Your Kirby Diamond has a rating plate and it will say: 120V~ 50-60 Hz 7A And I hope your new expensive Maytag DOESN'T say "12.5 watts" as stated in your above post. To answer your question, as best as I can figure, Americans have been at 120 Volt system for so long, why bother to give...

Thanks Mark... Oh wait! This just in from the EU! Kirby G10 series are completely mediocre on carpets and bare floors and completely fail the dust emissions testing. BUT, they do get an "A" for low power usage, so they can still be considered "green." To my friends across the pond, the EU...

PICS, PICS, PICS! Mark, Please post pics ASAP. Love to see your installation. Bill

The first measurement was easy to get, the last one (CFM at the nozzle) required me to build an airflow box. I think this pic should easily illustrate where and by how much CFM is lost in this machine. This machine has the highest nozzle airflow I've ever measured. From the base of the machine...