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Posted by Art Todesco on August 5, 2006, 9:42 pm
Interesting thing about picking up
bowling balls. Notice first
they us a large funnel, say 8" in
diameter. That equates to about
25 square inches. A suction of 1 psi
would yield 25 pound of
pickup force, enough for the average 20
pound bowling ball (I
think bowling balls are about 20 pounds
... right?).
1 psi is 27" of water. A 27" sealed
suction vacuum cleaner is
not a very powerful vacuum. My central
system is about 120" (H2O).
Sealed suction is good for picking up
bowling balls, however,
you also need a reasonable volume of air
along with good sealed
suction to make a good vacuum cleaner.
Nuf said.
Anonymous wrote:
> grappletech wrote on Sun, Jul 23 2006 at 7:41 pm:
>
>
>>We bought an Oreck for about $250 2 years ago. Included
>>about 20 free bags, a free powerful small canister type
>>vacuum with attachments for getting in tight places (great
>>for cars too), and a free cordless clothes iron. The Oreck is
>>wonderful. It's VERY powerful. It sucks up a ton of gunk, so
>>you'll be changing bags more often. And it's lightweight. Stay
>>away from all the shiny hunks of plastic vacuums at Target,
>>Kmart, etc
>
>
> I dig perky-hot Terri Ouellette, but round-faced David Oreck
> strikes me as less than honest. His latest pitch against bagless
> vacuums is standard overkill; always make the competing product
> look like extra trouble.
>
> You can simply empty a bagless canister outside or seal the
> opening with a plastic bag. We use that method inside the
> bathtub and rinse any extra down the drain. Do it carefully and
> the "invisible" dust won't migrate far. Mr. Oreck deliberately
> holds the canister high above the garbage can for maximum
> fluorescent scatter.
>
> Also, picking up a bowling ball doesn't so much attest to a
> vacuum's strength as it does the air-tightness of a rubber seal.
> You can lift a bowling ball with a big suction cup and no motor
> assist.
>
> Brands like Oreck and Kirby are overpriced and overhyped. How
> much does an endless supply of Oreck bags cost? He doesn’t
> mention that in his advantages list. I’d try a Dyson if you’re
> going to spend big bucks.
>
> N.P.
>
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