Re: Homemade Dust Collector
Your vac motor/suction fan can only pull so many Cubic Foot of air, and it is sized to keep a certain flow of air passing through the 2.5" hose to keep a workable velocity (air speed), up to move the dust, chips, etc, down the hose, by doubling or using a larger hose (you only have so much air moving) the speed or velocity of the air will slow and will not pull the dust or chips in the air stream,
actually reducing the 4" hose to 2.5" will probably benefit you the most, (the hose from the tool to the dust collector),
the cross section of a 4" hose is close to 3 times the size of the 2.5 hose, to keep the air stream moving to the equivalent of the vacuum in the 4" one would need three vacuums running to match the velocity of the vac in the 4" line.
If you notice the manufactured trash can lid separator units have equal sized openings in them,
and the truth of the horse power rating on the vacuum, is grossly over stated, If you can run that Vac on a 15 amp out let, which I am sure you can, the Hp is less than 2 hp, , the current model http://www.ridgid.com/Tools/WD1670-1...c/EN/index.htm unit says it pulls 12 amps, or that is about 1400 watts, the Horse power, with out over load on that unit is less than 2 hp, closer to 1.75 hp when running.
Last edited by BHD; 11-10-2009 at 10:04 AM.
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