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Reply by crank49

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Posted on Home Built Cyclone

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crank49

4028 posts in 2846 days


#1 posted 06-21-2011 03:12 AM

The fan in your link is NO horsepower. It’s a fan without a motor. Why spend $201 dollars for a motorless fan when you can buy the whole fan, 2 hp motor, on/off switch, bag filter and dropout bag, on a base with casters from Harbor Freight for $139? (With a coupon from Wood magazine)

Or, if you don’t like Harbor Freight, you can buy the exact same filter made in the same Chinese factory, but with a red, green or white coat of paint and sold by American sounding company names for $200 to $400 .

If you want to do it yourself, buy the $139 dust collector and throw all the parts away but the motor and fan and you still are $60 ahead and will have a 2 hp blower able to really generate about 800 honest CFM at about 9” static pressure. This will really handle a 5” duct alone, or a 4” and a 2 1/2” at the same time. It will even handle two 4” ducts but with reduced velocity; but enough for table saws, band saws, sanders, etc. Things that make dust mostly. For a lathe, jointer or planer you really want to jack up the velocity to keep those chips and shavings in suspension so I would pull all the 2 hp worth of air through a single 4” duct for those machines and just run one at a time.

Many LJs have bought the HF 2 hp collector and added a pre-filter in the form of what is referred to as a trash can separator to catch the heavy chips and big dust before they go through the fan.. Then they often replace the 5 micron bag with a cartridge filter for increased surface area which reduces the back pressure on the blower. The beauty of these LJ modified collectors is the cartridge filter captures the really fine dust down to 0.5 microns which is he biggest health hazzard..


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