Wall mount dust collection
#17
Doug
Thanks for the information, I ordered it today, will have it by Tuesday or Wednesday next week.

Mark
....the measure of a man is not what he does when people are around, it is what he does when no one is around.....

USAF, 1976-1982
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#18
Doug

Thanks for the information, ordered today, have by Tuesday or Wednesday next week.

Thanks
Mark
....the measure of a man is not what he does when people are around, it is what he does when no one is around.....

USAF, 1976-1982
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#19
Not to be Debbie downer, Mark, but you may want to rethink that decision.  Here is the performance curve for that unit:

[Image: AL9nZEVPDcJ-5desPXczwaOSyk-8WE2_vqM7BZMy...authuser=1]

With a 4" hose you will have less than 214 CFM.  I can't think of one stationary machine where that's enough.  If you add a cyclone it will be even less.  Once the filter starts to accumulate some fines, it will be even less than that.

John
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#20
Just an FYI, my trunk line from the wall station is 6" PVC and 6" flex at the end directly into the collector (2 1/2 HP Penn State unit). From the wall station to the tools I use the Rockler Dust Rite flexible 4" hose (necked down), with blast gates for control of course.

I did not do any analysis before re-doing my system last year - just a WAG. Got lucky as it seems to be very efficient and does the job for me.

Doug
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#21
I started with a 1 HP wall mount. It saves space, but that's about it. I recently went to a 2 HP 240V unit and it's barely enough with a cyclone and 4" hose. I tried to go with 6", but I simply could not (God knows I tried) get those adjustable elbows to move. Even so, the suction and air movement at the inlet are very high, but by the time you get past the cyclone and to the equipment it's not nearly as much as I'd like. It's rated for 1550 CFM, and that's barely enough even with a small shop and relatively short runs. With dust collection you can pretty much never have enough.
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#22
(01-19-2023, 05:29 PM)Tapper Wrote: Just an FYI, my trunk line from the wall station is 6" PVC and 6" flex at the end directly into the collector (2 1/2 HP Penn State unit). From the wall station to the tools I use the Rockler Dust Rite flexible 4" hose (necked down), with blast gates for control of course.

I did not do any analysis before re-doing my system last year - just a WAG. Got lucky as it seems to be very efficient and does the job for me.

Doug

That's not a solution here, Doug.  The performance curve for this unit shows it will have a flow of 685 CFM through a (very short) 6" (smooth) duct.  That's just barely enough to give 3500 fpm velocity through the duct.  Any increase in static pressure, and there will be significant by adding duct length, adding the cyclone, adding a 4" drop, will lower the velocity which will result in stuff falling out in the duct.  

Look at this design chart from a larger Grizzly DC manual:

[Image: AL9nZEVezRawQac_w4sOLMg9ZzUI6-pygCbwvpif...authuser=1]

You need 395 CFM to handle a shaper, small planer, table saw, or jointer.  A 4" line will do that if it's short enough and has a DC with enough power to do it.  You can see from the performance curve that this one has no chance.  

John
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