Thread Number: 23027
VACUUM CLEANERS AND CFM |
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Post# 257628 , Reply# 2   11/26/2013 at 08:37 (3,774 days old) by marcusprit ()   |   | |
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I would imagine 7.5 would take some beating. But would be very interesting to know what cleaner comes out on top :-) |
Post# 257629 , Reply# 3   11/26/2013 at 08:56 (3,774 days old) by marcusprit ()   |   | |
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I did read one test comparing the Kirby with a Dyson upright on the Baird gauge. The Kirby read 7 and the Dyson just 1. |
Post# 257634 , Reply# 5   11/26/2013 at 09:29 (3,774 days old) by suckolux (Yuba City, CA)   |   | |
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Post# 257654 , Reply# 6   11/26/2013 at 13:41 (3,774 days old) by sebo_fan (Scotland, UK, member AKA ukvacfan, & Nar2)   |   | |
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Wouldn't you have to measure readings when bags are empty and when bags are full as well as take into considerations the filters you have on board? No wonder the data isn't available for a lot of brands - you'd have to have infinite measurements of dust by weight and by type to be able to show what each vacuum cleaner can accomodate, and then measure suction strength from those variables alone.
Then tie in the filter type if it does indeed impede suction and air flow, plus tie in the infinite variables of the weight of dust as well as the extra layers of filtration of the dust bag that might further reduce suction? Clearly a baird meter only tells a quarter of the process. Then there's also the construction and design of the hose and the parts that may allow full air flow or reduce it. Hoover's TP models and its variants would suffer, speaking from personal ownership, here! |
Post# 257659 , Reply# 7   11/26/2013 at 15:16 (3,774 days old) by marcusprit ()   |   | |
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You're making it sound far to complicated. Just pop in a new a bag a standard filter and stick the gauge on the end of the hose! :-) |
Post# 257660 , Reply# 8   11/26/2013 at 15:55 (3,774 days old) by sebo_fan (Scotland, UK, member AKA ukvacfan, & Nar2)   |   | |
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But you can't just do that - that's not entirely fair if say the SEBO X is tested with its standard microfilter on board compared to a Miele S7 with the charcoal filter on board to any less than the Miele having its super air clean filter fitted. If the filter on board changes the rate of suction pull, then it has to be taken on board. I'd expect the Miele to have stronger lift anyway - it is fitted with an 1800 watt motor after all compared to SEBO's 1300 if using an X4. It isn't fair just putting a meter on a hose and expecting a figure. You also have to consider the bag filtration too.
You must remember that to some extend, all this fuss about lift and air watts comes direct from Dyson - again the company make great claims about 100% suction all the time as their cyclone method "eliminates" filter care and suction cut off. But it can't automatically be applied to bagged vacuums for the same "test." You're dealing with too many variables that have to be taken into account to make it fair. Otherwise what is the point? |
Post# 257662 , Reply# 9   11/26/2013 at 16:00 (3,774 days old) by sebo_fan (Scotland, UK, member AKA ukvacfan, & Nar2)   |   | |
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Also when I think about it, testing Miele's S8 with the D2 would be pointless as well - the hose on the SEBO D2 measures 2.1 metres with its 2100 watt motor on board ALONE without the additional separate motor fun ET-1 attached.
The Miele S8 has a 1.8 metre hose as standard, so in effect you'd possibly get more lift due to the shorter hose and Miele's 100 watts more 2200 watt motor. It is impossible to say until someone reveals that info and even then you have to make sure that whatever filters are on board plus the general hose design that there are no suction leaks - SEBO don't have an air valve on the handle so that air flow is consistent but Miele handles do. That can also affect air flow even from the slightest opening. |
Post# 257672 , Reply# 10   11/26/2013 at 17:39 (3,774 days old) by jade_angel (Fort Collins, CO)   |   | |
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Well, it wouldn't tell you the whole story, of course, but it would at least be part of it. |