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A few years back, I wanted to figure out a method for vacuum the vertical parts of carpeted steps thoroughly. I tried all sorts of machines and hose attachments and then I was given my first Kirby. A 1988 Heritage II Legend. Of course, I loved using it "right-way-round" but I saw fit to use it...

Chris, I understand that many members here on VL have had simply awful issues with Orecks clogging easily, but I am forced to wonder how David Oreck managed to build an empire around a machine that was used extensively in hotels for decades. Every Oreck I've encountered in thrift stores was...

Finished Bag and Emptor Tesing Today After testing just the Sentira II and G6's outer bag/emptor setup, I continued testing with G5 and G4 assemblies as well. The tests were run with the brush roll spinning and the same (never used) HEPA bag inserted into each assembly. Drum roll please...

Thanks for that info! I thought it had to be sometime in 2000, because the sales receipt I have says "sold as demo" in January 2001. Bill

Rob, I may or may not respond to your rant tomorrow as many of your claims simply don't make sense and personally I am amazed that you have gone on the attack like you have something to gain. Very childish behavior this "old man" thinks. I'll leave you to chew on this then. You claim that a...

Help me decipher the manufacturing date code For this Oreck. I see "00294" and will guesstimate that it may mean 29th week of 2000? Or 294th day of 2000? Please assist. Bill

It's Settled Then... Monday is Oatmeal Raisin Tuesday is Chocolate Chip Wednesday is Oreos, lots of Oreos Thursday is Sugar Friday must be Pizza then? :) Bill

I have scoured the interwebs and this is what I have found performance wise for current model Royals. It has been suggested here on VL that a Royal 8300 from a few years ago has 144 CFM at the nozzle. I have not been able to verify that and am wondering if that spec was a typo. Anyway, here's...

There are two methods I have for verifying dry motor bearings without removing them from the machine. 1) Current meter. Dry bearings will cause additional drag and cause the amperage to increase. I have a post entitled some like "How much power do they use" and you can see my measurements...

Mark, Your forgot the additional constraints: These tests must be performed only on Tuesdays, during a full moon, while wearing something plaid, eating a chocolate chip cookie, and repeatedly shouting "beam me up" directly at the offending particles. Bill

Thanks for the nozzle specs Mike Updated Nozzle Areas: Kirby G6: 14.25" x 2.375" = 33.8 square inches Wessel Werk: 11.8" x 1.8" = 21.2 square inches Shark: 9.8" x 1.6" = 15.7 square inches So the CFM density calculations become: Kirby G6 is 120 CFM / 33.8 sq. in. = 3.55 CFM per sq. in...

Stan, It's interesting to follow Kirby's evolution into higher performance over the years. There is a 17 CFM difference between my G6 and Sentria II. G6 Nozzle CFM = 120 Sentria II CFM = 137 Here's my partial guess as to how the 17 CFM increase can be accounted for: --9900 RPM / 9300 RPM =...

Great job Mike, May I ask for the nozzle measurements for the Nilfisk and Shark? I want to finish the interpretation of the results so all can understand your flour tests. Kirby G6 Nozzle Area: 14.25" x 2.375" = 33.8 square inches Nilfisk Nozzle Area: Need Measurements From Mike Shark Nozzle...

Mike, It's good to be skeptical! :) But it the meantime, since you have flow through carpet, wouldn't it be great to see some flour under the carpet tests? Some future testing suggestions: 1) Unless you're attempting to prove something rather special, keep the vacuum passes down to 1 or 2...

Mark, Different carpet types require different machines and I'm sure many people are very happy with the results of whatever type of machine they have. For cleaning various surface debris, my channel has shown that 50 CFM is usually acceptable...except for fine particulate. So far, I've...

Yes, the motor RPM is greater in Kirby's newer models I don't exactly when (maybe the Sentria I or Diamond edition), but Kirby definitely increased the motor speed. You can easily hear the pitch difference in my videos of the G6 and Sentria II. I'm aware that the motor part number is the same...

Rob, Let's take a look at what Mike actually accomplished in this video: 1) With two very, very, very slow completed passes on high, loose pile (and probably rubber backed, non-flow through) carpet, rice was vacuumed up. 2) The G6 is about 120 CFM at the nozzle and I'm guessing that the...

Bill finally gets an Oreck...and guess what? It actually works! Found this at a thrift store and of course it was clogged from top to bottom. After a thorough cleaning, new belt, brush roll, and HEPA charcoal bag here's the results. Deep cleaning? With 53 CFM, are you kidding? Surface...

Everyone, Please Be Careful When Quoting Specs As far as I can tell people keep quoting RAW motor specs that do not represent cleaning power at the end of the hose. As an example, pictured below is an 8.4" double stage Ametek motor that can do 142 CFM at the motor base with a 2" opening. When...

1000 Airwatts!? Mark, What are the motor specs of that beast? The best I've seen from a single fan unit is about 700 peak airwatts. Bill