Working water lift vacuum test gauge explained.

[got2bjennyg]

CRI ratings?

-
So, I don't own a Kirby. I've used them, but I never managed to buy one. That said, I have noticed that CRI gave the Avalir a gold rating. So, is that to mean that the CRI ratings are wrong, and unreliable? Just honestly curious as I have no ponies in this race so to speak.

I've already discovered that you cannot count on Consumer Reports to be accurate in terms of performance of products, so those results are off the table even though they did give the Kirby very highly in cleaning ability (top honors for carpet cleaning and 100 for bare floors).

 

[vacuumdevil]

@rivstg1 What results do you question ? I'm happy to answer any questions.
I start the video showing the Kirby has a good brush roller and has been properly tuned up and is 100% working order.
I also demonstrate with a working vacuum gauge why the results were what they were.
The Miele s6 because it showed the drastic difference It's the newest vacuum I have.
I believe the same results would show for Henry,Lindhaus,SEBO,Riccar or name any modern bypass vacuum of choice.

Despite popular belief,I really like Kirby vacuums. I have many in my collection.
You can also see the great care I took in polishing this Kirby.

You're in Colorado maybe we could organize a Colorado vacuum collectors meet up? I know a few others out here.


@got2bjennyg CRI accuracy has been a curiosity of mine I have been unable to confirm or deny how accurate they are. Consumer Reports is definitely a pay-to-play I think you'll find no argument from anybody about that.
The point of the working vacuum is strictly to measure a vacuum Motors practical use rating. By putting into a simple number of very abstract concept of airflow and suction physics.

 

[vaclab]

Proper AirWatts Suction And Airflow Explanation

Working waterlift is meaningless for cleaning dry particulate. Water lift is meant for lifting WATER as the name implies. If one needs to move water (via suction), then water lift is meaningful. Water lift (aka suction) is a pressure. It is not a movement or a volume (of air). CFM is the dry cleaning component because it consists of two necessary factors:

1) a volume of air in which the dirt is contained and
2) speed at which the dirt is transported to a collection receptacle.

Cubic feet per minute (the speed of a volume of air) is what moves the dirt, not suction. Suction is a pressure that attempts to keep the airflow moving over a distance (i.e. hose) and/or any situation where the airflow is being made to do work (i.e. airflow through a carpet, bagless cyclonic bins, etc.)

Bill

 

[rivstg1]

vaclab's comments

your explanation seemed, somewhat intuitive....thus, I've never really understood why some argue that water lift rating is the key or so important to vacuuming your home. The Air movement approach appears to be the right explanation....thus CFM rating's importance to comparing cleaning ability.

 

[rivstg1]

vacuumdevil

yes, fellow Colorado resident! mini meet of sorts could be cool.....start a trend perhaps!!!!

I looked up tests on airflow, and contrary to your comment that the direct air machines weren't as good as tandem machines, I couldn't find any tests showing that....only found the opposite. I did find the 'working water lift' test heavily favoring those machines though.

Heres the more pertinent comment I read that gives some response/insight
"
steeltag
1 month ago
the most substantial problem I see with your testing on the carpet and hardfloor with the Kirby with large objects is....you didn't adjust the nozzle to the proper height ...FOR the given situation. It is intended to seal to the carpet, your'e correct , but when larger objects are encountered, adjust the nozzle for the situation. First, raise the nozzle a bit, p/u of the larger objects, then lower it for finer/smaller materials. This experiment you conducted is analogous to a sewing machine use....NOT adjusting the height of the needle when transitioning from a thin material and a thick material. Your explanation ( based on your reasoning here) would conclude that the sewing machine wasnt very good....which would be very deceptive.
Show less
"

 

[vacfan1982]

Suction and airflow work together. They are 2 sides of the same coin.
A vacuum cleaner is not a complicated piece of equipment.
A motor spins a fan which causes a drop in pressure and air to flow. It's not rocket science

 

[mike811]

With the canister vacuums strong suction is needed to maintain the airflow through the hose.
Direct motor (dirty air) vacuums don't need a lot of suction if (when) the piping is extremely simple and in the most cases large diameter.
One thing what I find very frustrating is using the low airflow vacuum on the bare floors. There is no brushroll helping in the pick up.
For example: Using the hard floor nozzle or just the pipe end in the tight places.
High airflow vacuum sucks up dirt from further away and with the low airflow vacuum I really need to see more effort to get the job done.
Vacuuming is faster with the high airflow vacuum.
So suction is needed to maintain the airflow.
Airflow is the important part what does the job.

Here is what I mean:

 

[vacuumdevil]

@rivstg1

"tests on airflow, and contrary to your comment that the direct air machines weren't as good as tandem machines, I couldn't find any tests showing that....only found the opposite. I did find the 'working water lift' test heavily favoring those machines though. " I couldn't find this comment on vacuum land and unfortunately I've shot too many videos at this point to recall saying that. If you could put it in some context for me that would be great.

I don't think there's really any doubt that tandem Air machines carpet clean better then direct air only machines.

I did go back and read watch the video I made on the Kirby to make sure the height adjustment was adjusted. At 26:00 minutes in you can clearly see the height adjustment and it's later shown in a point of view camera as well. The machine was properly adjusted for my high pile carpeting.

Now if you're implying that one would change the height adjustment just to pick up some extra debris. In that case I think you're proving my point further and putting another nail in the coffin of the generation series.
A little bit later in the video 27:30 I do go on to explain why the results were that way.
as far as the water lift rating being important to me ,the more water lift a vacuum cleaner has the best it is at picking up heavier objects.

So in an ideal World I'd like to see a vacuum cleaner have 100" of lift and 150CFM
I don't believe we'll ever see these numbers from a portable vacuum. But they're pretty realistic numbers for a central vacuum.
The working vacuum gauge gives you a nice way of testing things in their practical cleaning ability.

I hope that clarifies everything.