The Ideal suction AIr Flow numbers for a Vacuum

[vacfan1982]

That's a very good result, I wouldn't expect the Kirby to perform so well on a sealed carpet but it seems it does

What about with fine dust because Kirby's agitation wont work so well here.

I'm surprised the Shark did twice as well as the Dyson had you been drinking when you did that test Mike? [this post was last edited: 3/7/2020-06:40]

 

[vacfan1982]

That's a very good result, I wouldn't expect the Kirby to perform so well on a sealed carpet but it seems it does

What about with fine dust because Kirby's agitation wont work so well here.

I'm surprised the Shark did twice as well as the Dyson had you been drinking when you did that test Mike?

 

[mike811]

I haven't tested fine dust with the Kirby, but it should work fine
Note that my sand is super fine so it's more like mix of sand and fine dust.

I actually did the Dyson test twice and result was the same.
I was actually kind of upset by the poor Dyson result.
No need to drink unless I was a huge Dyson fanboy

 

[vacfan1982]

Well I am clearly wrong about the Kirby on a sealed carpet then.

I am so not a Dyson fan boy haha I prefer bagged cleaners but I do like the V11. I've heard the V12 will have a solid state battery which apparently will have a significant increase in running time and a significant decrease in charging time. Could be a very big step forward from what I hear but will have to wait and see.

 

[mike811]

Dyson needs to make a small cordless upright.
I just don't like when all the weight is in the hand.
It makes it very inconvenient when using the tools.

Yes I know that you are not huge dyson fanboy
Your new Vorwerk is awesome!

 

[vacfan1982]

I'd like to see a full sized cordless from Dyson that would be a good addition.

You're right the V11 can get start to feel a bit heavy in the for above floor cleaning the V8 feels better but has a smaller bin they need to add the option to lock the power button, they need to listen to their customers about that.

I don't know much about solid state batteries maybe they will be lighter making the V12 easier to use?

 

[vacfan1982]

I hope they have better success with their solid state battery in the V12 than in their abandoned electric car

 

[mike811]

They also have reliability problems with their current battery technology.
A lot of people have reported failing batteries. No wonder that the warranty is only 2 years instead of normal 5 years.
I need to ask my friends V10 for loan and for my tests
=

 

[vacfan1982]

That's the problem with rechargeable batteries. Sir James claims they will last 15 yrs but that's clearly BS.

That's why I won't pay £600 for one or £500 as they are today.

Look forward to your tests Mike but stay off the Sahti

 

[vaclab]

Correction for Reply #4

I typed: A Hoover Celebrity couldn't run at 3.7 HP because that would mean 3.7 A x 120 V = 2760 Watts, which would require a 23 Amp 120 Volt circuit.

I meant: A Hoover Celebrity couldn't run at 3.7 HP because that would mean 3.7 HP x 746 W/HP = 2760 Watts, which would require a 23 Amp 120 Volt circuit.

Bill

 

[vaclab]

2nd Correction for Reply #4

I typed: Shop-Vac and other companies have insane false ratings like "6.5 Amps"
I meant: Shop-Vac and other companies have insane false ratings like "6.5 HP"

It was bad "unit swapping" day. I hate it when I have those.

Bill

 

[vacuumdevil]

@vaclab



I agree that most horsepower ratings on vacuums are bull.



But it's possible to have a motor produce multiple horsepowers without it consuming more electricity.

Consumed Watts/amperage does not always equal horsepower.



Great example is a BMW i8 which is 369 electric horsepower but can be charged on 120 12amp

I've also linked a simple machine motor that's two horsepower and can run on multiple voltages.



My point being is unless you have a Dino and an amp meter hooked up you're probably not going to test that metric.



That's why it's best to stick with the industry standard of working vacuum,CFM sealed vacuum inches of water.

https://www.grizzly.com/products/Grizzly-Motor-2-HP-Single-Phase-1725-RPM-TEFC-110V-220V/H5383

 

[vaclab]

Wow, Alex You Don't Even Have A Basic Understanding Of

Electricity or power formulas at all. Quite shocking really. Try learning E=IR and P=IE and their variants.

==================================
But it's possible to have a motor produce multiple horsepowers without it consuming more electricity.
Consumed Watts/amperage does not always equal horsepower.
==================================
Completely wrong. 2 HP is 2HP, which is 1492 Watts. This means @ 110V it would pull 13.6 Amps and @ 220V it would pull 6.78 Amps. The total power draw is the same. If you had bothered to look at the link you posted, you would also see that anything rated over 2 HP has to use 220V, which exactly proves my point that 2HP is the practical limit for a 15A, 120V circuit.

==================================
Great example is a BMW i8 which is 369 electric horsepower but can be charged on 120 12amp
I've also linked a simple machine motor that's two horsepower and can run on multiple voltages.
==================================
For electric cars, charging rates at different voltages do not equate to maximum power draw when actually using the motor. Do you know why different charging rates even exist? Because not everyone has a high current 220/440 or even higher super chargers installed in the house. Some of the fastest chargers available are nearing 1000 Volts.

Do the Math: If I have a 50 KWhr battery and all I can charge at is 1875 Watts (15A/120V), it would take over 26 hours to charge. Higher power charging stations can charge at much faster rates. Discharge rates when the vehicle is operating is much more than 2HP and the battery drains in just a few hours under normal driving conditions.

Lastly, any electrical device that can run on multiple voltages has this thing known as a "transformer", which steps the voltage up/down as needed. It does this by connecting to different parts of the coil or separate coils altogether.

You really need to take a basic electronics course.

Bill

 

[tolivac]

Fast chargers run from 440-480V 3 ph.This is what those multiple car charging stations use.And those can charge more than one car at a time.It still can take a few hours to charge the car's batteries.