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Thread Number: 32601
/ Tag: Brand New Vacuum Cleaners
Bagless vacuums and poor airflow rate. Can this be real?? |
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| Post# 357417 , Reply# 1 8/10/2016 at 10:16 (2,809 days old) by sebo_fan (Scotland, UK, member AKA ukvacfan, & Nar2) | ||
Frankly I'd like resistance. Otherwise I'd be in danger of breaking those upright vacs if they had maximum pull!
Its all very well showing one of those meters for strongest suction but when it comes to pushing a vacuum like an upright along the floor, I think I would be in fear of the upright ripping up my carpet coupled with such strong force. Same with the Miele, which he didn't bother showing performance with a suction only floor head as that would be just too hard to push. Similarly, if the bagless uprights could release such powerful suction without the bagless units in place, isn't that going to cause the motor to overheat and cut out? | ||
| Post# 357426 , Reply# 3 8/10/2016 at 11:18 (2,809 days old) by dysonman1 (the county) | ||
I don't hold a lot of stock when it comes to the Baird meter. It was designed to trick people into buying a Kirby, not as a real and meaningful test. A far better testing device is a wind speed indicator (digital). They cost about $125, but are accurate and reliable. I had to buy one when I serviced Rainbow E and E2 models, to check the air (wind) speed to know if the HEPA filter was restricting airflow due to being dirty.
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| Post# 357427 , Reply# 4 8/10/2016 at 11:36 (2,809 days old) by Mike81 () | ||
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I personally use the full-size turbo brush to "measure" the suction level. It's quite easy to hear tone of the turbo brush how powerful vacuum/airflow is. It certainly has revealed some surprises what I normally would not expect. CLICK HERE TO GO TO Mike81's LINK | ||
| Post# 357428 , Reply# 5 8/10/2016 at 11:45 (2,809 days old) by wyaple (Pickerington, OH) | ||
Mike81, Yes it is very real
Please examine my tests of a fully restored DC14. Bottom line: those cyclones restrict airflow something terrible. For my DC14 the loss is 128 CFM - 78.6 CFM = 49.4 CFM drop. Please note: these tests were verified with a digital anemometer and a Baird meter.
For my Hoover Windtunnel 2, the loss is 117 CFM - 73 CFM = 44 CFM drop. Of course I want to get a newer Dyson ball vac to see how much CFM is lost; however, I find it noteworthy that the water lift (suction) loss was minimal in both machines. Bill CLICK HERE TO GO TO wyaple's LINK
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| Post# 357431 , Reply# 8 8/10/2016 at 12:26 (2,809 days old) by vacerator (Macomb Michigan) | ||
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I bet fine dust can eventually clog even a Dyson filter. This dealer also sells Miele's. Which would you think brings him more margin? | ||
| Post# 357437 , Reply# 9 8/10/2016 at 15:29 (2,808 days old) by Mike81 () | ||
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Dyson cyclones can get clogged over time. In the youtube there are a lot of videos showing it. | ||
| Post# 357440 , Reply# 10 8/10/2016 at 16:56 (2,808 days old) by Dys0nb0y (Luton) | ||
No Offence dude but
If you just wanna googled it you would know why this happeneds. So I wouldn't jump to conclusions too quickly mate.
CLICK HERE TO GO TO Dys0nb0y's LINK | ||
| Post# 357442 , Reply# 11 8/10/2016 at 17:12 (2,808 days old) by sebo_fan (Scotland, UK, member AKA ukvacfan, & Nar2) | ||
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| Post# 357443 , Reply# 12 8/10/2016 at 17:16 (2,808 days old) by sebo_fan (Scotland, UK, member AKA ukvacfan, & Nar2) | ||
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| Post# 357444 , Reply# 13 8/10/2016 at 17:17 (2,808 days old) by Dys0nb0y (Luton) | ||
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| Post# 357445 , Reply# 14 8/10/2016 at 17:17 (2,808 days old) by sebo_fan (Scotland, UK, member AKA ukvacfan, & Nar2) | ||
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| Post# 357447 , Reply# 16 8/10/2016 at 17:57 (2,808 days old) by Dys0nb0y (Luton) | ||
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