Vacuum Cleaners Discussions |
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HARDSELL
Joined: Aug 22, 2007
Points: 1293
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Re: Dyson DC11 is Back!
Reply #77 Jun 20, 2009 9:28 pm |
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HS: It's not a double edged sword. It's a dual combination [good suction and industry standard brush roll] for a winning vacuum success. Even dyson now agrees after a number of years and tries. Don't ride roller coasters. Already been to the casino today and did very well. Thank you for asking. Tomorrow is another day. Carmine D.
I can't recall saying that a good brush was vital. I would still take straight suction and NO brush as opposed to a great brush and NO suction. The latter is like the old bissell sweepers or an Oreck.
All carpets do not require the same type brush.
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retardturtle1
Joined: May 16, 2009
Points: 358
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Re: Dyson DC11 is Back!
Reply #78 Jun 20, 2009 9:38 pm |
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Air flow and air watts can be skewed. There are many variations in the resistance to air flow that should be considered when measuring air flow. Air flow may not be a measure of system performance. In addition to the resistance within the power unit, there is resistance caused by air turbulence in the hose and tubing, restriction where the cleaning nozzle contacts the floor, as well as increased resistance within the filtering system as the unit fills with dirt. High output (air watts) is not the only factor to consider in determining performance. I would think that sustained air watts is a better indicator of performance than is peak air watts. Carmine, Mole, Venson, Dusty and many others are much more qualified to answer this than I. Carmine is just being timid or cantankerous. I suspect the latter.  thank you H.S for the info...i thought airwatts was measured at the hose end ,in the brushroll chamber...for a truer reading and not at the motor....thought thats how the cent vac industry did it....at the end of the hose...for a true reading?
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Venson
Joined: Jul 23, 2007
Points: 1900
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Re: Dyson DC11 is Back!
Reply #80 Jun 20, 2009 10:06 pm |
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</p><BR>thank you H.S for the info...i thought airwatts was measured at the hose end ,in the brushroll chamber...for a truer reading and not at the motor....thought thats how the cent vac industry did it....at the end of the hose...for a true reading?
This is once again a case of, "If you dazzle them with brilliance baffle them with BS." Even machines with the best suction lose something in the translation by the time you get airflowing at the hose end or floor nozzle. Body seals may not always be tight enough, hose connections may also allow for leakage and even friction may diminish suction. (One of the reasons that household vacuums never usually have overly long hoses.) Badly designed wands and attachment locking mechanisms may also attribute to the same. Not many manufacturer are up to the challenge of honsetly stating what suction measure as at the motor's air inlet and the final percentage of a hundred percent that finally arrives on the floor or at the end of your hose. If we had vacuums that could deliver a close percentage of hte motors actual draw, we could again use machines that use less power Venson
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CarmineD
Joined: Dec 31, 2007
Points: 5894
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Re: Dyson DC11 is Back!
Reply #82 Jun 21, 2009 7:08 am |
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If we had vacuums that could deliver a close percentage of hte motors actual draw, we could again use machines that use less power
Venson
Hi Venson:
The advantage of the fan first uprights of years gone by and ORECK and a few others still today. Carmine D.
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HARDSELL
Joined: Aug 22, 2007
Points: 1293
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Re: Dyson DC11 is Back!
Reply #83 Jun 21, 2009 7:48 am |
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HS:
I would take both on rugs over one or the other exclusively. Fortunately in today's vacuum market both are offered by all brands and most models. Carmine D. Such words of wisdom. I am impressed----------by your twisting.
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mole
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Location: earth
Joined: Sep 30, 2007
Points: 783
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Re: Dyson DC11 is Back!
Reply #84 Jun 21, 2009 8:38 am |
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Such words of wisdom. I am impressed----------by your twisting. Airwatts, cfm x waterlift divide by 8,5 My F,A,S,T, intake throttle body has 1100 airwatts, it doesnt clean very well though. H.S. all the numbers can be manipulated,all depends how they want to market the product, In the central vacuum industry any thing over 400 airwatts is considered powerful ,its just a # game............ regards MOLE
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HARDSELL
Joined: Aug 22, 2007
Points: 1293
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Re: Dyson DC11 is Back!
Reply #86 Jun 21, 2009 9:33 am |
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Airwatts, cfm x waterlift divide by 8,5
My F,A,S,T, intake throttle body has 1100 airwatts, it doesnt clean very well though.
H.S. all the numbers can be manipulated,all depends how they want to market the product,
In the central vacuum industry any thing over 400 airwatts is considered powerful ,its just a # game............
regards
MOLE
Would it be legal to put one of those 6500 rpm Oreck motors in the exhaust to help the flow?
THanks for saying what I was trying to get others to say. Manipulation exists in all industry. The best test is hand on experience. Forget the marketing hype.
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