Reply by Fred Hargis

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Posted on Cyclone Dust collection

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Fred Hargis

5176 posts in 2694 days

#1 posted 03-22-2013 11:54 AM

Opinions vary widely on this, and your opinion will be what you want to see with your DC. The Pentz data would say that for capturing the finest particles (most injurious to your health) you need maximum at the tool….1000 CFM. You will not see that from any 1.5HP collector. Adding a cyclone only reduces the air flow (that’s why cyclones usually have bigger motors/impellers) so the 1.5 HP looses ground with one compared to the larger units. That said, the 1.5 HP will certainly capture most of the larger stuff, and if that’s what you seek you should be quite happy. As for the flow meter, some guys use an anemometer (wind meter) to measure airflow but the scientific way to do it would be with a vacuum/pressure guage (Magnehelic is one name brand) equipped with a pitot tube. But remember this: even a world class DC system isn’t going to capture every spec of dust in your shop, there are too many operations that skip the dc system (routing, for one) that also puts dust in the air. So, recommendations? Decide what performance you’re after in the DC then decide if the 1.5 HP is enough. If you want to catch the big stuff it should work, if you want to catch everything you’ll need a larger unit, along with an ambient air cleaner (ceiling filter). Don’t forget the stuff I mentioned about opinions; they will all be different, and all correct…they just measure against different criteria and you’ll need to fit yours into that spectrum.

-- Our village hasn't lost it's idiot, he was elected to congress.

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