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Topics - JeffQ

#1
Hi all - I am currently using an older 2hp Grizzly 1029 (similar to a Harbor Freight DC) with an aftermarket Wynn filter on it. For the time being, it is rolled around and connected to each machine as needed, but I am just about finished running the last of my 6" PVC for a central system. I've done everything I can think of to minimize the runs, and used 45's everywhere I had to make a direction change. Since the budget for the big Clearvue DC is a ways off yet, I want to mod out the Griz DC to be as efficient as possible in the meantime.

I plan to build a small bumpout closet space just outside the shop walls that the termination of the DC runs to, but since it was laid out for a tall cyclone, the DC pipe is high up on the wall and not down low where the Griz DC's inlet is. To make the transition back down to the interim Griz DC / baffle combination I have to utilize a number of 45's. If I go with the Top Hat pre-separator design, I see two ways I might be able to connect to the Top Hat. Which one would cause the least pressure and velocity drop? (see attached image).

Secondly, I can either reuse the Griz bag ring for the Wynn filter holder, or if the baffle works as well as everyone says it does, then maybe I could build my own plywood "filter holder" box and just add a small sealed clean out drawer at the bottom for the few fines that get through the baffle.

Any of you smarter and more experienced types have insight you might be willing to offer? Any advice you have would be appreciated. I'm hoping to only have to fab this up once and want to create the best efficiency without unnecessary effort until I can spring for the true cyclone.
#2
Thien Cyclone Separator Lid Discussion / Newbie Questions
February 05, 2010, 08:33:53 PM
I thinking about tackling an internal Thien baffle for my new to me Grizzy 1029 2 hp DC this weekend. I finally am getting a long awaited woodshop put together with the proper tools (Jet cab saw, combo J/P,etc) and unfortunately the hard-piped 3hp cyclone is going to have to wait.

Since I managed to score the Griz DC for free, I thought I'd upgrade the bags to a Wynn filter and try the easiest and cheapest version of a internal Thien separator first and then move to an external drum separator only if I needed to.

Here's my question: The Griz 1029 has a shallow conical ring just inside the metal bag support. Can I get away with installing only the bottom 120/240 baffle in the lower part of the bag ring using the appropriate nom. 5" tall standoffs attached the underside of the conical ring - or do I need a separate full circle top baffle plate above the conical ring too?

Also, should I be concerned about sealing the bottom baffle to the inside of the griz bag ring with silicone, or is an air tight seal in the 120 degree area not critical?

Sorry to be asking questions that should probably be obvious to me, but most of the posted pics seem to focus on separate barrel installs where the need for a top plate to seal the can is imperative.