Replies

1. 
   RoyinMD | Feb 18, 2003 06:16am | #1

   Hey Jeff,

   My 1/2 cent worth says 50 feet is too far for any dust collector thats not considered commercial grade. A straight run and the collector just inside the building I think would still be pushing it. My table saw is the farthest tool from the dust collector and the suction reduction is significant compared to the closer two tools.

   Love Vermont, my parents lived there for 11 years. Miss it.

   Enjoy, Roy

2. 
   TKanzler | Feb 18, 2003 05:59pm | #2

   In theory, there's nothing wrong with what you propose.  It's no different than using booster pumps on long pipe runs for transporting other fluids.  But unlike booster pumps on long pipelines, the blowers are badly mismatched in size and flow, so the small blower unit will limit the flow rate, and the large unit will be underworked.  You also don't want the small one to move more air than it's designed to move, or you risk overloading the motor.  Using a large duct with a small flow will allow the chips to settle out, so a small duct (like 5") is probably best.  Try to keep air speed at 3500 to 4000 fpm.  With fan curves and data on the ducting, you could do a pretty good job, but without such things, the best you can do is guestimate, and monitor current draw on the two DC motors (especially the small one).  You may find that the performance is the same with larger duct and no booster fan.  No way to tell without more detail.

   Be seeing you...

   
   

   ---

   Edited 2/18/2003 10:03:27 AM ET by Tom Kanzler

3. 
   DouglasABaker | Feb 18, 2003 07:33pm | #3

   Possible: Yes

   Feasible: Probably

   Without a lot more information about your specific fans (as mentioned, you'll need fan curves, etc), and a LOT of planning to determine where the booster should be placed to ensure no settling, etc, it's hard to say.

   My biggest concern would be your 1hp's ability to pick up dust in the remote location - a 1 hp simply will no generate enough static pressure at the appropriate velocity to service more than 1/2 very short runs.

   I'd go with a 2nd unit, but that's just me...

   Doug

1. 
   Windwoodtrader | Feb 18, 2003 07:43pm | #4

   The 1 HP probably won't make it as a booster even if you go for your paycheck on some extremely low friction piping. This stuff is expensive and I believe would eventually plug up. Would the piping be outdoors? If you're in a cold climate condensation and heat drop at the destination would also be an issue. I would go with a second system/collector.Windy Wood

   From the Helderberg Mountains

2. 
   Jeff | Feb 18, 2003 07:47pm | #5

   To All

   My general thinking was to place the small Delta 1hp unit right near

   my planer in another building.

   Then to pipe to my full shop with either 4 or 5 inch pipe right into

   a y branch at my Penn State 2 hp cyclone.

   I don't have any performance curves for either units and no easy way to measure flow.

   I might be able to get the distance smaller, depending on what I can

   do for direct shots.

   My thought was using the small unit as a booster.

   That's about all I have for now.

   Jeff