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On that 6.5 on the Baird Meter, was that with the synthetic bags and not the really old paper bags for the Felix?

Aren't the newer "Lift Away" Sharks single stage cyclonics? That's probably the biggest contributator to "poor filtration." I have a single stage woodworking cyclone but it incorporates a few design features to ensure higher seperation than the relatively simplistic single cyclone designs on...

The Evolution looks like a BS36 replacement to me since it uses the same bags, but it has the X series microfilter. The 370/470 shares the same bag as the X but not the motor pre filter...

I don't suppose they're going to do anything to the 370 Comfort? It seems to of disappeared off the UK site but its still listed on the US and German Corporate websites.

I wouldn't like to operate the switch with my toes dealing with the handle mounted on the X series seems fine and looking at the 370 Comfort the body mounted switch seems to make sense too. I wonder what was going through the mind of that engineer. I guess for commercial usage having a foot...

Why not superalloys? If you want the ultimate "aerospace cred" marketing claim as a company then you could always make those fans out of highly abrasion resistant metals like Inconel or Hastelloy or Waspalloy or Astralloy. They'll cost a small fortune but won't be lying when you claim that the...

HEPA Box Ultra Bag Differences I just noticed something when I was doing some organizing, the HEPA Box Ultra Bags seem to of had a revision at some point. The ones from the X HEPA Service Box look like they're a variation of the European Ultra Bag material, they're also made in Germany. The C...

Get multiple dusting brushes This probably sounds like insanity, but I'd advise against looking at a dusting brush as a dusting brush and instead as one dusting brush out of a set. I have the Sebo X/C nylon brush, horsehair brush and Dyson Soft Dusting Brush as my top three in use. The Sebo...

Blah, a correction Sorry: "previously the power nozzle was the loudest part thing," should be "previously the power nozzle was the loudest part of the vacuum." I wrote that without checking the preview over again after doing some edits earlier. As to agitation: If a X doesn't provide enough...

Enough airflow once you use synthetic bags I'm going to say that the X4's airflow dramatically increases once you use the synthetic bags. Previously my X4's motor was really the only thing I heard from it in normal operation. After I replaced the paper bags with a generic syntheic bag I can...

Reuse? I remember reading that someone reused their Ultra Bag by vacuuming it out with another vacuum and found that their filter got a little more dirtier with use than usual. I'm curious if you found if that's the case as well. I haven't tried out the HEPA Box Ultra Bag yet, but I suspect...

Synthetic bags I think you'll really have to give any of the synthetic bags a try, even the generics. From my experience they increase the flow significantly that it feels like you've upgraded the motor outright.

HEPA Ultra Bags They're the second one from left to right. They're the "HEPA Box Ultra Bag," which has the additional layer of paper ontop of the synthetic material. Unlike the generic, it has part of the lamination structure found on the European Ultra Bag where it has sections where if you...

Synthetic Bags I haven't tried out the HEPA Ultra Bags, but I recommend giving the European Ultra Bag is worth a shot, there's someone selling them on Amazon but it takes them 2+ weeks to ship via snail mail all the way from the UK. Using the synthetic Ultra Bags really increases the airflow...

Dyson's DDMs aren't that special Marcus, Dyson's "Digital Motors" are just brushless motors or induction motors with an inverter that they build in house to their own spec. The real advantage is that there's a lack of brush friction in them and they can be built potentially more compact. The RC...

Just an update I finally tossed the paper bag, it was getting pretty full to the point that it was packed like a bag of flour towards the bottom 2/3rds. There was some loss of flow and vacuum pressure from all the vacuuming with the paper bag. I didn't feel any fine powdery dust on the outside...

There's a chance that some of the dog urine ended up in the pad and the removal of the urine in the carpet (+ Moisture left in the carpet) caused whatever remains of it to wick back up from the pad.

Apologizes on the hastiness and wrongful information on my part. I thought the AW formula was utilized using the maximum airflow and vacuum pressure and not when airflow or suction is held constant via diameter restriction and when the other variable is measured and used in the formula.

Going by the first formula found here: http://en.wikipedia.org/wiki/Airwatt And a secondary formula which I found: "(Air Flow (in CFM) x Vacuum (in inches of water lift))/8.5 = Air Watts" A Sebo X4 has: 107CFM and 92.5" of water lift. Which gives me 1120 airwatts, alternative formula gives...

That better be one insanely competent, incorruptable, infallible and perfect monolithic organization... Otherwise it still has the same flaws.