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Dust Collector "Size"

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Forum topic by PresidentsDad posted 07-19-2019 02:20 PM 503 views 0 times favorited 33 replies Add to Favorites Watch
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PresidentsDad

48 posts in 695 days


07-19-2019 02:20 PM

Hey all,
Getting a shop together and working on dust collection. Would prefer a cyclone type unit to keep from having to doing constant maintenance and for ease of cleanup. I plan to have a Table Saw, Router Table, Jointer, and Planer connected to it (plus a floor sweep). Also plan on plumbing up those tools permanently and using blast gates. I’m a hobbyist/DIYer, so probably won’t be running more than one machine at a time. Thoughts on what “size” I should get? 1.5HP, 2HP, 3HP? I can run 240V, so that is not an issue. Thanks in advance for the assistance.


33 replies so far

View farmfromkansas's profile

farmfromkansas

89 posts in 61 days


#1 posted 07-19-2019 05:32 PM

I started with a 2hp cyclone, and when I got an edge sander found it inadequate. If you plan to really get into the shop thing start with a 3hp or larger. I found a used 3hp unit, and should have gone with the clearvue max. I also have a small widebelt sander, 15” which requires similar suction to the edge sander. For just a planer and jointer a smaller unit is fine, table saw requires more suction than the chip makers, and bandsaws more yet, and the finest sawdust requires most.

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LesB

2151 posts in 3890 days


#2 posted 07-19-2019 05:36 PM

There are variables to consider such as duct size, and length of the runs, so some information about that is needed before a size can be suggested. That said I would start at a 3hp.

-- Les B, Oregon

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PresidentsDad

48 posts in 695 days


#3 posted 07-19-2019 05:42 PM

Quite right. Will likely use 6” PVC ducting for most runs a max of 40 feet in more or less a straight line. (though probably won’t even go that far).

View Fred Hargis's profile

Fred Hargis

5634 posts in 2940 days


#4 posted 07-19-2019 05:50 PM

Wt 6” ductwork, it would be wise to start with the larger units, 3 HP should do well though cyclones really put some drag on the system. That’s why you often see them with larger motor/impellers versus a single stage. Still, a 3 HP unit should do nicely for you.

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

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PresidentsDad

48 posts in 695 days


#5 posted 07-19-2019 06:28 PM

If I used 4” duct work would that mean I could use the 2HP unit?

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farmfromkansas

89 posts in 61 days


#6 posted 07-20-2019 12:03 AM

No, 4” is not adequate for the amount of air you need to run through your collector to get the dust. A 4” system will handle half the air of a 6” system. If you have to reduce the size, do so at the machine. I put a 6” flange on my edge sander as a 4” got about half the dust.

View Redoak49's profile

Redoak49

4100 posts in 2436 days


#7 posted 07-20-2019 12:23 AM

I would get a 3 hp with 6” PVC . You will never regret having a bigger dust collector. I have a 5 hp and love it.

View TungOil's profile

TungOil

1298 posts in 942 days


#8 posted 07-20-2019 03:21 AM

Start by designing your ductwork to properly service your equipment. Then pick a DC that will do the job. Start by reading this: https://airhand.com/designing/

-- The optimist says "the glass is half full". The pessimist says "the glass is half empty". The engineer says "the glass is twice as big as it needs to be"

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Fred Hargis

5634 posts in 2940 days


#9 posted 07-20-2019 10:42 AM

A mistake (IMHO) that many folks make is to buy a kickass DC and then choke it by using ductwork that’s way too small (the reverse is a big problem as well). I suspect that happens because the ductwork part of the system is also surprising expensive, and smaller is a little cheaper. But if you intend to go 4”, you can get by with a smaller DC…..it just isn’t going to move the air that a more robust unit will; and it’s that air flow that catches the most fine dust.

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

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PresidentsDad

48 posts in 695 days


#10 posted 07-20-2019 03:28 PM

Thanks all. I appreciate the feedback. Thoughts on a good 3HP system that will do the job and last a long time?

View farmfromkansas's profile

farmfromkansas

89 posts in 61 days


#11 posted 07-21-2019 03:02 AM

Grizzly, Oneida, Clearvue, Mine is a DustKop, which is a commercial unit, and I bought it from a local junior college, and after getting it home, found it was unused. But had a 3 phase motor, I took it to a motor shop to see about getting a VFD installed, and the guy put a new Leeson single phase motor on it. So same as new, and it has pretty good suction.

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PresidentsDad

48 posts in 695 days


#12 posted 07-22-2019 02:51 PM

OK, YIKES!!! Those suckers are expensive! So…rather than NO dust collection, could I buy a 2 or 3 HP smaller machine and move it from machine to machine for now, then upgrade components in the future as my needs expand? I know it’ll be a pain in the behind, but can’t really shell out $1200-1500 right now for dust collection.

View Fred Hargis's profile

Fred Hargis

5634 posts in 2940 days


#13 posted 07-22-2019 03:40 PM

A true 2 or 3 HP DC will require 240V power. which might be a problem with moving it around the shop. But yes, you can do that….please note I’m not recommending it.

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

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PresidentsDad

48 posts in 695 days


#14 posted 07-22-2019 03:42 PM



A true 2 or 3 HP DC will require 240V power. which might be a problem with moving it around the shop. But yes, you can do that….please note I m not recommending it.

- Fred Hargis


Good point. I’m planning on adding several 240 outlets but that does put a damper on things. :)

View pintodeluxe's profile

pintodeluxe

5970 posts in 3260 days


#15 posted 07-22-2019 03:58 PM

It’s interesting to note that the 2hp and 3 hp Tempest Cylones have the exact same performance curve. Upgrading to the 3hp may have benefits in terms of longevity, but that’s it. So… I say go more by the fan performance chart than the h.p. rating. Fan diameter is also a good clue.

2 hp with one brand doesn’t necessarily = 2 hp with another brand. RPM, fan diameter, and fan design have more to do with performance than horsepower.

I have the 2 hp Tempest and it works great, even with tools that are notably difficult to collect dust (such as a drum sander). Now, you can no longer buy a Tempest brand, but there are many full-size cyclones that look almost identical.

In short, I recommend a full-size cyclone and 6” metal ductwork.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

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