Yes. The top mount for the blower wheel and motor is a convenience, not a
necessity. The filtering/separation action of the cyclone is due to the dynamics
of the air moving through the cyclone and is not dependent on the location of
From a practical standpoint, you may have some difficulty closing off and
sealing the top of the cyclone cylinder and adapting a transition fitting from
the cyclone outlet to the inlet of your blower. But that depends on the design
and construction of the specific cyclone.
Wichita, KS USA
On 16 Nov 2004 04:49:40 -0800, firstname.lastname@example.org (mnterpfan) vaguely
proposed a theory
......and in reply I say!:
remove ns from my header address to reply via email
Rant on. HTH.
One thing to remember. A good cyclone will stop a heck of a lot. In
fact I saw where the 'standard" bags on a DC are a waste of time if
you have a good cyclone!
.......but.....and a big but...there are really fine bits (5 micron
and below) that get through.........and the standard bags are "not
needed" because they do not stop exactly these fine bits! It's being
found that these fine bits are what really damages your lungs. So if
you have a good cyclone (or not!), then you need proper filters on the
outlet, not the bags that come with the DCs. Probably the ideal is
cyclone, bags, then fine filter. Cyclone stops the bits, bag stops a
bit more, last filter stops the real nasties. Each one is easier to
"clean" than the next one. Final filter may not be cleanable at all.
There are filters called HEPA. High Efficiency Particulate Arrestance.
Some filters are _called_ HEPA. Others _are_ HEPA, AFAICS. These are
medical grade. "Boy in a bubble" stuff.
However, I have been advised that you do not really need HEPA filters
for shop use. They are often expensive, small in area (less time
before they need replacing as they clog), and often not reusable.
There are industrial filters, that go down to .5 micron particle size,
that are "concertinaed" to give huge area, and are a lot cheaper than
HEPA per "cub ft of stopped dust", so to speak. Check with an
industrial filter supply. That's where I went, and the guy was quite
helpful. He could have sold me HEPA at twice the price, but was
advising what he thought were better solutions for the real world.
Also remember that any filter system will need maintenance, and to be
kept free-flowing. A lot of people say that bag filters increase in
effectivness as they clog up, because the dust stuck in the weave acts
as a better filter. But of course this results in reduced flow, so you
lose a lot of the effect.
Nick.. as a Ken Vaughn hero worshiper, I've adopted his dust
1) window fan blowing out of shop if possible...
2) DC connected to whatever is running, if possible..
3) Air filtration system using blower and large filters to clean small
particles out of the air..
I'm not quite sure what theory I vaguely proposed. I was asking for
advice on setup options. Specifically, I was interested in the
statement in Torit's literature: "Can be used .... as a pre-cleaner."
I haven't seen any setups that include a powered cyclone feeding into
another powered dust collector. One of my concerns is how the air and
dust will behave between the two impellors. Does the second impellor
mess up the cyclone action in the first one? Is there a danger to
For more information, my Jet is a 2hp/230v with a filter canister that
filters to 2micron. It uses clear plastic collection bags. I don't
think that this is what is referred to as standard filtration. The
Torit cyclone is a 2hp/3ph with cabinet base. I believe it to be a
very good industrial grade cyclone. Although I would like to keep
both, it would use a lot of floor space, be very noisy to use both,
use a lot of amperage (50 amp subpanel feeds whole shop), and not be
Thanks for your advice. It didn't seem like a rant to me. Again, I am
advice seeking, not theory proposing.
ps email address is non-functioning
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