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Remember the max power estimates? It proves V16's motor has extremely similar motor efficiency compared to every previous flagships since the V11 (185 * 545 / 900 ≈ 305.5 AW).
 
centralsweeper63 said:
VacuumFacts, turning down the suction reduces cleaning performance. I see so many dysons in for service compared to sebos or kirbys or even an electrolux. If you say dysons are the best and very durable while saying those who repair them, are wrong, fix one yourself to prove it. A vacuum is thrown around and used until it is dead. Dyson can't handle hat others can. Verysimple.
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It's only true when everything else is equal. @Vacuum Facts suggested it's much more nuanced than that, which allows the vacuum to perform similarly with lesser suction. His lecture says it all.
 
herbicide said:
Yes that is in your lecture but is not stated clearly (IMO) "The speed of the air portion through the pile." More specifically, the speed of the air upon the dirt/dust particles.
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It's derived from first principles right at the very beginning and there's an entire chapter heading on it. Technically a summary of the lecture is post 1 here. I will be a doing a rev 2 of that lecture at some point next year probably to clarify and optimise (and correct) a few things.
herbicide said:
The one exception or clarification is dirt particles that become agitated and removed/suspended from the pile. If there is no airflow to capture and remove these particles they can simply fall back into the pile. If the dirt is found outside of the pile due to agitation; an infinite amount of airflow at the pile will not remove any dirt if no dirt exists at said pile.
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Yes. This is explicitly covered in the lecture.
herbicide said:
For hard surfaces the concept is essentially the same, just trade the "pile" for the "surface."
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Hard floors are different in that they offer very high air resistance on fully sealed heads, maximising suction (minimising head pressure), and cutting off flow—hence the need for bleed relief. Poorly designed heads that leak don't clamp or need bleed relief, but they're poor on carpets.

herbicide said:
I've stated my theory hypothesis in this very thread before:
Click to expand...
And you were right about that, which is why I didn't correct you—you called the sky blue and water wet in that case.

cheesewonton said:
V-F, speed and airflow have an inverse relationship on a vacuum cleaner. Look at an airflow chart for any vacuum motor made and you will see that as airflow increases, suction decreases.
Click to expand...
You should know this is common knowledge here now; I even derived it from first principles like a scientist rather than just looking it up like an engineer. The entire lecture revolves around it.

cheesewonton said:
If you graph airflow and suction against orifice size
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Orifice size controls air resistance, which is more fundamental.

cheesewonton said:
you see as you go from a closed orifice where suction is maximum and airflow is zero, as the orifice increases suction falls and airflow increases. Where they cross is the point where you have the most cleaning power and where calculated air watts are maximized.
Click to expand...
All this changes once you put the head on the floor, since various floor types offer different air resistances (equivalent to orifice size changes) and the system responds accordingly. Same if you change tools. How that affects airwatts and the situations that this is important is covered in the lecture.
cheesewonton said:
There needs to be a balance of both suction and airflow, along with good agitation to move the dirt up out of the carpet and suspend it in the airflow so it gets removed.
Click to expand...
You're understanding isn't quite correct. You need some flow, but it's total volumetric magnitude isn't important. It's speed is. This is governed exclusively by suction. Science in lecture. Large airflows are bad because they reduce suction, the speed of the flow, and therefore cleaning performance. Large airflows occur on low resistance flooring (rugs) so can't be avoided. High large air power is required to sustain suction in the presence of large air current to maintain the air speed. Again, see lecture.

centralsweeper63 said:
VacuumFacts, turning down the suction reduces cleaning performance. I see so many dysons in for service compared to sebos or kirbys or even an electrolux. If you say dysons are the best and very durable while saying those who repair them, are wrong, fix one yourself to prove it. A vacuum is thrown around and used until it is dead. Dyson can't handle hat others can. Verysimple.
Click to expand...
This is not always true. I recommend you understand the science better. Head suction pressure determines cleaning performance (or at least is the primary aerodynamic factor—the rest are also discussed). Head pressure varies based on the air resistance from the flooring and the resulting magnitude of air current. More air power is needed in response to situations where large air currents are present in low resistance situations.

cheesewonton said:
Turning the power down when the carpet is deep is the wrong choice. All wrong. Get some air under the nozzle !
Click to expand...
As above: it depends what the head pressure is.

centralsweeper63 said:
VacuumFacts, why don't you install a central vacuum? You can get MD in the UK. https://www.centralvac.co.uk/index.html . You harshly critisize central vacuums but you have never tried one.
Click to expand...
Because I don't have £9 million or the space. I've also no good reason to and many that do revert anyway.
 
Vacuum Facts said:
It's derived from first principles right at the very beginning and there's an entire chapter heading on it. Technically a summary of the lecture is post 1 here. I will be a doing a rev 2 of that lecture at some point next year probably to clarify and optimise (and correct) a few things.

Yes. This is explicitly covered in the lecture.

Hard floors are different in that they offer very high air resistance on fully sealed heads, maximising suction (minimising head pressure), and cutting off flow—hence the need for bleed relief. Poorly designed heads that leak don't clamp or need bleed relief, but they're poor on carpets.


And you were right about that, which is why I didn't correct you—you called the sky blue and water wet in that case.


You should know this is common knowledge here now; I even derived it from first principles like a scientist rather than just looking it up like an engineer. The entire lecture revolves around it.


Orifice size controls air resistance, which is more fundamental.


All this changes once you put the head on the floor, since various floor types offer different air resistances (equivalent to orifice size changes) and the system responds accordingly. Same if you change tools. How that affects airwatts and the situations that this is important is covered in the lecture.

You're understanding isn't quite correct. You need some flow, but it's total volumetric magnitude isn't important. It's speed is. This is governed exclusively by suction. Science in lecture. Large airflows are bad because they reduce suction, the speed of the flow, and therefore cleaning performance. Large airflows occur on low resistance flooring (rugs) so can't be avoided. High large air power is required to sustain suction in the presence of large air current to maintain the air speed. Again, see lecture.


This is not always true. I recommend you understand the science better. Head suction pressure determines cleaning performance (or at least is the primary aerodynamic factor—the rest are also discussed). Head pressure varies based on the air resistance from the flooring and the resulting magnitude of air current. More air power is needed in response to situations where large air currents are present in low resistance situations.


As above: it depends what the head pressure is.


Because I don't have £9 million or the space. I've also no good reason to and many that do revert anyway.
Click to expand...
@Vacuum Facts I really hope you're V16 review go viral and become extremely popular. That should teach stupid reviewers a lesson!
 
V-F is a Brit and has no idea what American and Canadian homes are like inside. I have lived and traveled widely abroad including a large chunk of western Europe and UK. Lived for a time in Australia too. I stayed in people's regular homes including a nice two story one in a town north of Southampton that belonged to a relative of my motorcycle riding partner on that particular trip. North America uses very different carpets and rugs than one finds in Europe. I doubt his place in the UK has a "mud room" for changing in and out of winter gear, a room that is perpetually sloppy and dirty for months. And I am sure he isn't dealing with the fine clingy desert caliche my vacuums have to deal with in our high desert home. No true deserts anywhere in Europe. What works in a European home doesn't work so well in an American home. Europeans often get by with an air powered turbo brush, but those won't cut it in deep pile carpet. V-F lacks the hands on to know this. He has never seen the kind of deep pile carpet my first home came with and the problems associated with keeping it clean in a desert with dogs running in and out of a dog door. That kind of carpet is not used in Europe. V-F needs to see the real life cleaning challenges of American and Canadian homes. The problem is he doesn't know what he doesn't know but thinks he already has all the answers.
 
cheesewonton said:
V-F is a Brit and has no idea what American and Canadian homes are like inside.
Click to expand...
Is it like this?
cheesewonton said:
I have lived and traveled widely abroad including a large chunk of western Europe and UK. Lived for a time in Australia too. I stayed in people's regular homes including a nice two story one in a town north of Southampton that belonged to a relative of my motorcycle riding partner on that particular trip. North America uses very different carpets and rugs than one finds in Europe. I doubt his place in the UK has a "mud room" for changing in and out of winter gear, a room that is perpetually sloppy and dirty for months. And I am sure he isn't dealing with the fine clingy desert caliche my vacuums have to deal with in our high desert home. No true deserts anywhere in Europe. What works in a European home doesn't work so well in an American home. Europeans often get by with an air powered turbo brush, but those won't cut it in deep pile carpet. V-F lacks the hands on to know this. He has never seen the kind of deep pile carpet my first home came with and the problems associated with keeping it clean in a desert with dogs running in and out of a dog door. That kind of carpet is not used in Europe. V-F needs to see the real life cleaning challenges of American and Canadian homes. The problem is he doesn't know what he doesn't know but thinks he already has all the answers.
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Not quite sure what factual claim you are making, but I welcome the evidence for it from you, once you've figured out how to form a simple factual statement.
 
Vacuum Facts said:
Is it like this?

Not quite sure what factual claim you are making, but I welcome the evidence for it from you, once you've figured out how to form a simple factual statement.
Click to expand...
The first factual claim is that you have never lived in the US or Canada and have not seen our homes, our floor coverings or the dirt and pet hair we have to clean. As a result you have no way to accurately judge what we in the US and Canada need by way of a vacuum cleaner. You cannot create an accurate test if you don't know the environment to be simulated.

The second factual claim is that you need to test North American market 120 volt vacuums on typical deep pile carpets found in US and Canadian homes to make any kind of informed opinions that are applicable to the US and Canada.

Third factual claim, North American 120 volt, Japanese 100 volt and rest of the world 220-240 volt Dysons for example have different motors from different manufacturers and perform differently. The test of a European Dyson is meaningless to someone in the US because the products are different.
 
People get hypersensitive if I suggest they are stupid. However, let's take this one claim:
cheesewonton said:
The first factual claim is that you have never lived in the US or Canada and have not seen our homes, our floor coverings or the dirt and pet hair we have to clean.
Click to expand...
Can you present the evidence of how you've determined this with respectable certainty that wouldn't constitute a justified claim of stupidity or idiocy etc.? I suggest you don't know anything about me or my experiences, which would therefore make it pretty idiotic to imply you do.

cheesewonton said:
The first factual claim is...
Click to expand...
So this is BS and nothing to do with anything

cheesewonton said:
The second factual claim is that you need to test North American market 120 volt vacuums on typical deep pile carpets found in US and Canadian homes to make any kind of informed opinions that are applicable to the US and Canada.
Click to expand...
Explain why in detail in a coherent way, with evidence. I disagree.
cheesewonton said:
Third factual claim, North American 120 volt, Japanese 100 volt and rest of the world 220-240 volt Dysons for example have different motors from different manufacturers and perform differently.
Click to expand...
We'll ignore the next claim was several nested claims. OK, no contention here. Not sure why you raised it.
cheesewonton said:
The test of a European Dyson is meaningless to someone in the US because the products are different.
Click to expand...
Show explicitly that your factual claim is true. The cordless machines use battery powered motors that are universal.

'Three' factual claims. Let's see how many he satifsactorily evidences. My guess is...ZERO. I evidence all the factual claims I make in my videos.
 
Show explicitly that your factual claim is true. The cordless machines use battery powered motors that are universal.

I am referring to corded machines. Dyson 120 volt and 240 volt machines use different motors from different manufacturers. Panasonic and YDK motors are different internally. Different fan designs. Take some vacuum motors apart and see for yourself.

In my home I need an hour and a half just do to a quick clean. No battery powered machine lasts long enough so they are not a consideration. This is why you need to see American and Canadian homes. Our homes are much larger than those in Europe and have a lot more carpet to clean.
 
Vacuum Facts said:
People get hypersensitive if I suggest they are stupid. However, let's take this one claim:
Click to expand...
Hmm, your reply to 'me' was that you were referring to some elusive 3rd party.

Thanks for actually admitting your insults were truly meant for.

Generally the person responding with crude insults when questioned (or in that case answering a question) would be considered the "hypersensitive" one, but you continue to be you, your reactions and attempts to gaslight are actually quite entertaining.
 
Can you present the evidence of how you've determined this with respectable certainty that wouldn't constitute a justified claim of stupidity or idiocy etc.? I suggest you don't know anything about me or my experiences, which would therefore make it pretty idiotic to imply you do.

You talk about "mains power" which is not a term used in America. It is a British term. In the US it would be called household current or residential power. "Line power" in North America is 480 volts stepped down to 240 volts at the local transformer and this is tapped at each end with a neutral at the center. The potential between either pole and neutral is 120 volts. For a 240 volt appliance like an electric range ( what you Brits call a hobb ) or electric dryer the outlet has ground, neutral and both poles of 120. The electrical potential between the poles however is 240 volts and the appliance uses the two poles to power it where a normal household 120 volt outlet has ground, one 120 volt pole and neutral. You talk about prices in Pounds. Not even Euros, but Pounds. That tells me you are Brit. I spent a year with the British military on a British base to know your idiom pretty well. It is pretty obvious, not just to me but many of us here, that you don't know our homes and our dirt. It is painfully obvious. You do not have the slightest idea what is needed to clean an American home.
 
cheesewonton said:
Can you present the evidence of how you've determined this with respectable certainty that wouldn't constitute a justified claim of stupidity or idiocy etc.? I suggest you don't know anything about me or my experiences, which would therefore make it pretty idiotic to imply you do.

You talk about "mains power" which is not a term used in America. It is a British term. In the US it would be called household current or residential power. "Line power" in North America is 480 volts stepped down to 240 volts at the local transformer and this is tapped at each end with a neutral at the center. The potential between either pole and neutral is 120 volts. For a 240 volt appliance like an electric range ( what you Brits call a hobb ) or electric dryer the outlet has ground, neutral and both poles of 120. The electrical potential between the poles however is 240 volts and the appliance uses the two poles to power it where a normal household 120 volt outlet has ground, one 120 volt pole and neutral. You talk about prices in Pounds. Not even Euros, but Pounds. That tells me you are Brit. I spent a year with the British military on a British base to know your idiom pretty well. It is pretty obvious, not just to me but many of us here, that you don't know our homes and our dirt. It is painfully obvious. You do not have the slightest idea what is needed to clean an American home.
Click to expand...
I also question if he has any long haired females, children, or pets in his household. Or if he/his family has any moderate to severe allergies.

It would also be helpful to know the size of residence being cleaned, as perspective of what it takes to be a 'mains' (I always thought that meant primary, or "main") is quite a bit different for ~1000 sq ft (~90m2) versus 2000+ sq ft (~185+ m2)

All of those factors along with your aforementioned regional environmental factors are huge factors in the demands placed upon a machine.
 
Vacuum Facts said:
You're understanding isn't quite correct. You need some flow, but it's total volumetric magnitude isn't important. It's speed is. This is governed exclusively by suction. Science in lecture. Large airflows are bad because they reduce suction, the speed of the flow, and therefore cleaning performance. Large airflows occur on low resistance flooring (rugs) so can't be avoided. High large air power is required to sustain suction in the presence of large air current to maintain the air speed. Again, see lecture.


This is not always true. I recommend you understand the science better. Head suction pressure determines cleaning performance (or at least is the primary aerodynamic factor—the rest are also discussed). Head pressure varies based on the air resistance from the flooring and the resulting magnitude of air current. More air power is needed in response to situations where large air currents are present in low resistance situations.


As above: it depends what the head pressure is.


Because I don't have £9 million or the space. I've also no good reason to and many that do revert anyway.
Click to expand...
So much to unpack here so I am leaving some of it alone...

No one wants to watch your lecture time and time again to pluck out a single point. If its in your lecture fine, but unless all you are interested is in "clicks and profit" you can also restate it here, much like you insist that others do everytime you want to debate a topic.

But I digress, just a few posts ago we were in agreement that the air velocity impinging upon dirt particles is what makes a vacuum clean dirt from the floor. Now you are arguing something different...

You're understanding isn't quite correct. You need some flow, but it's total volumetric magnitude isn't important. It's speed is. This is governed exclusively by suction. Science in lecture. Large airflows are bad because they reduce suction, the speed of the flow, and therefore cleaning performance. Large airflows occur on low resistance flooring (rugs) so can't be avoided. High large air power is required to sustain suction in the presence of large air current to maintain the air speed. Again, see lecture.
Click to expand...
As I am sure you know and I am sure is in your 'lecture,' flow, speed, & "suction" (correct term would be pressure differential...) are all interrelated. Given a fixed orifice size an increase in flow will increase the speed. If you are being pedantic, then you can't blame others for correcting you here...

This is not always true. I recommend you understand the science better. Head suction pressure determines cleaning performance (or at least is the primary aerodynamic factor—the rest are also discussed). Head pressure varies based on the air resistance from the flooring and the resulting magnitude of air current. More air power is needed in response to situations where large air currents are present in low resistance situations.
Click to expand...
So much incorrect here... Head suction pressure: In theory you could have zero head pressure (a complete vacuum) with zero air speed, if the "orifice" is closed, or in vacuum cleaner lingo, the cleaner head is "clamped" allowing no air movement. In those conditions there is zero air speed/velocity.

"Head Pressure" depends on the orifice (in this case the flooring) and the pressure differential being delivered by the pump (motor/fan) and the relative pressure inside the "head;" if the pump motor has a lower pressure, the system will always seek equilibrium. It has nothing to do with the amount of "air currents," whatever that actually means. It ("head pressure") is wholly dependent on the orifice size and the pressure made available by the pump/motor.

What this all means is:

1. @cheesewonton is correct in his statement of "get more air" into the head.
2. I am now convinced you do not understand vacuum theory.
 
I am sorry but you always seem to be going against the grain and being very hypocritical. Like, for example, when you complained that in my explanation of my testing methods that I said "spread evenly" then I explained exactly what I meant then you linked back to the same earlier comment. Then I point out that you said "spread evenly" in your " full and thorough explanation of testing procedure" within your review videos. Very hypocritical.
 
Vacuum Facts said:
There's enough here for my target audience to see this is a dead end. It's not in anyone's interest to continue.
Click to expand...

centralsweeper63 said:
I am sorry but you always seem to be going against the grain and being very hypocritical. Like, for example, when you complained that in my explanation of my testing methods that I said "spread evenly" then I explained exactly what I meant then you linked back to the same earlier comment. Then I point out that you said "spread evenly" in your " full and thorough explanation of testing procedure" within your review videos. Very hypocritical.
Click to expand...

Absolute Rainbow said:
@Vacuum Facts I had to correct the AI multiple times, while at the same time I also had to teach the AI to understand the science and everything. So far I've come up with this corrected set from Google Gemini 2.5 Pro (with human intervention this time), which came up with this possible take:
- Possible issue: How the V16 connects to the dual-cones floorhead used to test deep cleaning. The data pin(s) may be the problem.
- Possible fix: Block the ID connection (by using a small non-conductive tape) but keep the power. The machine would treat it as a typical powered tool instead of the specialized one that the floorhead has been designed as.
Click to expand...
Google Gemini 2.5 Pro but corrected by human intervention said:
The modification is to block the data communication pins between the wand and the main body, while still allowing the power pins to connect.
  1. The Method: The connector between the wand and the V16 body has large pins for power (to drive the head's motor) and small pins for data (for identification). The fix is to use a small piece of non-conductive tape to cover only the small data pins.
  2. The Resulting "Fixed" State:
    • The V16 body turns on.
    • It sends power to the wand, and the Piston head's motor spins (it's receiving power).
    • However, the V16 body's data request gets no reply (the pins are blocked).
    • The firmware now faces an unhandled exception: It has a powered head (it can feel the electrical draw) but no ID.
    • It does not default to the 458W Carpet limit (it doesn't see the Piston head).
    • It does not default to the 725W Tool limit (it knows a powered head is attached, not a non-powered tool).
    • With no specific "throttle" command to execute, the firmware defaults to its absolute maximum, uncapped hardware profile.
Click to expand...

Link: https://g.co/gemini/share/d529363a9a4e
@Vacuum Facts this is the closest I've come to figuring out what's wrong with the V16. Literally, and I had to constantly correct the AI because it can get things wrong. I had to use your lecture as a base, as I have "promised" to you.
 
centralsweeper63 said:
I am sorry but you always seem to be going against the grain and being very hypocritical. Like, for example, when you complained that in my explanation of my testing methods that I said "spread evenly" then I explained exactly what I meant then you linked back to the same earlier comment. Then I point out that you said "spread evenly" in your " full and thorough explanation of testing procedure" within your review videos. Very hypocritical.
Click to expand...
I'm not convinced you can be helped, but the information to help you is available already.
 
For those interested in actual theory and facts, here is a
centralsweeper63 said:
I am sorry but you always seem to be going against the grain and being very hypocritical. Like, for example, when you complained that in my explanation of my testing methods that I said "spread evenly" then I explained exactly what I meant then you linked back to the same earlier comment. Then I point out that you said "spread evenly" in your " full and thorough explanation of testing procedure" within your review videos. Very hypocritical.
Click to expand...
How dare you ask any questions to the one and only ultimate authority on all things vacuum. (sarcasm)
 
cheesewonton said:
The first factual claim is that you have never lived in the US or Canada and have not seen our homes, our floor coverings or the dirt and pet hair we have to clean. As a result you have no way to accurately judge what we in the US and Canada need by way of a vacuum cleaner. You cannot create an accurate test if you don't know the environment to be simulated.

The second factual claim is that you need to test North American market 120 volt vacuums on typical deep pile carpets found in US and Canadian homes to make any kind of informed opinions that are applicable to the US and Canada.

Third factual claim, North American 120 volt, Japanese 100 volt and rest of the world 220-240 volt Dysons for example have different motors from different manufacturers and perform differently. The test of a European Dyson is meaningless to someone in the US because the products are different.
Click to expand...
I would love to see a DC01 work on American carpet, or even a Dyson Ball Animal Multi Floor (looks like an Animal 3 Extra, but it has the really cool telescope wand setup instead of the DC41 wand design). It would be interesting to see how they perform, just out of sheer curiosity.
 
rlsellman21 said:
My Dyson is almost 2 years old. Still works perfectly
Click to expand...
ha, it's so obviously absurd that most of these comments can be ignored to avoid feeding the trolls. The problem with this place is it's full of bad actors that make untruthful claims they never back up with evidence whilst simultaneously denying and poo-pooing the evidence provided for them that conflicts with their wonky worldview. It's why it's generally dead, sadly.
rlsellman21 said:
I would love to see a DC01 work on American carpet, or even a Dyson Ball Animal Multi Floor (looks like an Animal 3 Extra, but it has the really cool telescope wand setup instead of the DC41 wand design). It would be interesting to see how they perform, just out of sheer curiosity.
Click to expand...
I'd love to see some strong evidence showing there's some difference between an "american" carpet (which has not been defined in a manner that commands any respect on here so far, naturally) and any other carpet, given that the range is so wide, regardless. It's so obviously a dumb and nonsensical label. Of course, the proponents of such silly terms will never provide any because they're too busy denying and smearing facts that are easily checkable.
 
rlsellman21 said:
I would love to see a DC01 work on American carpet, or even a Dyson Ball Animal Multi Floor (looks like an Animal 3 Extra, but it has the really cool telescope wand setup instead of the DC41 wand design). It would be interesting to see how they perform, just out of sheer curiosity.
Click to expand...
We have a DC33 and it works pretty good on US carpets, when the clutch/belt isn't worn out (like it is on ours right now) Hard to quantify objectively on "dirt removal" but it definitely outperforms (or did with a good belt/clutch) a V15 & a V7. The largest gripe I would have with it is the bulkiness of the head (can't get close to corners, under things, etc).
 
rlsellman21 said:
Wouldn't the installation costs make a central vac more expensive? Plus, I'm sure trying to retrofit a central vac system into an older home would be a major pain in the ass.
Click to expand...
Of course it would be. A simple fact check shows this. What's important going forward is you identify which sources spout nonsense of this nature so you know what to generally ignore on lack of credibility grounds. Don't let poor sources get away with nonsense and don't let them troll. Some are just beyond help, sadly.
 
Vacuum Facts said:
I'd love to see some strong evidence showing there's some difference between an "american" carpet (which has not been defined in a matter that commands any respect on here so far, naturally) and any other carpet, given that the range is so wide, regardless. It's so obviously a dumb and nonsensical label. Of course, the proponents of such silly terms will never provide any because they're too busy denying and smearing facts that are easily checkable.
Click to expand...
Here is an example of a typical carpet found in the USA ~13mm soft pile height, PET or Polyester, ~42oz weight. I think this example is pretty representative of "American" carpets. Note this specific example is problematic with a V15 in terms of "clamping" and brush roll stalling.

For a wider view on "typical" USA carpets, google can be your friend: https://www.homedepot.com/b/Floorin...o-0550-in/Indoor/N-5yc1vZarl0Z1z17lgmZ1z1wkrt

IMG_6239.jpeg
 
herbicide said:
Here is an example of a typical carpet found in the USA ~13mm soft pile height, PET or Polyester, ~42oz weight. I think this example is pretty representative of "American" carpets. Note this specific example is problematic with a V15 in terms of "clamping" and brush roll stalling.

For a wider view on "typical" USA carpets, google can be your friend: https://www.homedepot.com/b/Floorin...o-0550-in/Indoor/N-5yc1vZarl0Z1z17lgmZ1z1wkrt
Click to expand...
This was pathetically weak evidence attempting to formally and convincingly quantify any meaningful difference between an 'american' carpet and any other found elsewhere on the planet. I remain wholly unconvinced the term is anything other than an indicator of sources of nonsense.
 

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