Grizzly 2hp Dust collector 2-stage conversion--your inputs

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by d38 posted 10-01-2017 07:41 PM 2474 views 1 time favorited 5 replies Add to Favorites Watch
View d38's profile


142 posts in 1276 days

10-01-2017 07:41 PM

Topic tags/keywords: dust collection cyclone oneida

I need to finalize plans for my 2-stage mod and start ordering the cyclone, filter, and chip/dust can. The only factory parts I’ll use are the blower/motor. Like many others, I will stack it vertical (dust drum/cyclone/blower) and filter on the side.

Cyclone – I called Oneida, and the rep suggested the XL version of SDD because the DC should have enough CFM to operate it, and it gives me the 6” input hose. The XL being about 37” tall, makes the system tall in a hurry, and its size has a high shipping cost. But the sales rep said its size and 6” ports would be the best match for the 2hp Grizzly. Agree/disagree with his input?

Cartridge filter – What square feet of media is good? Wynne MERV15 filters are 200-274 sq ft. Obviously, more allows it to exhaust better, but at what point is it overkill and not worth the extra cost and bulky filter size? I’ve seen MERV15 filters as big as 350 sq ft when surfing the internet.

Chip drum—Need it big enough, but not too tall either. I found a couple Eagles on Amazon.
The Eagle 1654 is 20 gallon and 21” tall. But is 20 gallon enough when planning boards?
The Eagle 1601MB is 30 gallon but 28.5” tall—increasing total height of the system.
Oneida’s 35 gallon fiber drum is 23” and $47, but we need a $15 lid, and $60 shipping!

Ducting—I’ll make the DC stand on wheels, but don’t plan to move it around. DC will sit in the corner with TS and miter saw next to it. Plan 6” HVAC metal down to the floor, then 3-4’ of flex into the TS and MS hood (TS will also have a 4” Shark Guard air port).
Should I run 6” all the way? Or transition to 5” or 4” at the saw hoods? I know a lot of systems reduce to 4” for the equipment drops, but not sure why. I can modify my TS hood to 6” pretty easy, and I’ll make the MS hood using an HVAC fitting, so 4, 5, or 6” would work.

This is my first dust collector, so learning from others is appreciated.

5 replies so far

View RobS888's profile


2829 posts in 2859 days

#1 posted 10-01-2017 07:49 PM

I have a 55 gallon 1st stage and planing can fill it. I, uh, accidentally, left my planer flex hose off where it connects to the system and made quite the mess with one 25×10 board! I have carbide inserts, so it makes small chips, but my old 6 inch made more of a volume of ribbons.

-- I always knew gun nuts where afraid of something, just never thought popcorn was on the list.

View retfr8flyr's profile


386 posts in 2683 days

#2 posted 10-02-2017 04:48 AM

I am in the planning stages of converting my Jet 1100 VXCK DC to a 2 stage system. After much research and talking to Oneida, I decided to go the the SDD, not the XL. I called Oneids twice and talked to two different people, one recommended the SDD and one recommended the XL. If you are planning to upgrade your main unit in the future then I would go ahead with the XL. I am not and I think the SDD will give me better velocity then the XL and I think my Jet has a higher actual CFM then your HF unit does. Your HF is advertised as 2 hp but it only has a 10 inch impeller, if you are going to go with the XL, I would upgrade your impeller to the 12 inch from Rikon, that will maybe give you enough velocity to keep things flowing well in 6 inch pipe.

-- Earl

View d38's profile


142 posts in 1276 days

#3 posted 10-02-2017 10:57 PM

So I”ll steer towards the 30 gallon drum.
Earl, thanks for the SDD vs XL info. I think the 1.5-2hp CFM is in the transition of the sizes. I’ve actually got the Grizzly 2hp, so should be more CFM than HF (Grizzly rates it at 1550 CFM).
I bought an anemometer to do some measurements—I realize consistent measurements are difficult, but it gives some basic info. At the 6” port, 5,000 fpm. At the 4” wye with one open, 8,000+, both open 5700. End of 4” hose 10’ long, with 2 gentle bends 6800.
Now that I have these CFM numbers, I”ll call Oneida again and see what they say.

View pintodeluxe's profile


6319 posts in 3827 days

#4 posted 10-02-2017 11:58 PM

I would go with a 55 gallon drum if you can. I used a food dry storage drum and put a lexan window in it with rivets and silicone. It cost only a few dollars at a recycling center that specializes in such things.

Best of all if I forget to empty it at 30 or 35 gallons, no problem. What you don’t want to do is overfill a small bin, where chips start backing up into your filter.

I use a 2hp Penn State Tempest Cyclone and it works great.
Good luck with your build.

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

View retfr8flyr's profile


386 posts in 2683 days

#5 posted 10-03-2017 01:38 AM

I didn’t catch the Grizzly 2hp, everyone seems to go with the HF one and I see 2hp and automatically assume HF. With the Grizzly 2hp you should be able to run the XL just fine. I compromised and got a 41 gallon drum from The Cary Company. Kind of in between the 55, which would be a little too tall and the 35 from Oneida and it has the same diameter as the 55, so the inner liner will work. I also got the Oneida Dust Sentry, to monitor the quantity in the drum.

-- Earl

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics