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Which Cyclone Dust Collector

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Forum topic by Jesse posted 11-20-2015 03:48 PM 604 views 0 times favorited 8 replies Add to Favorites Watch
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Jesse

58 posts in 1092 days


11-20-2015 03:48 PM

Hello all, need help making a decision on which cyclone dust collector to purchase.

I will be buying a new cyclone system at the end of the year and I am trying to decide which one will fit my shop the best. I will be using quality metal piping made for dust collection as well as proper fittings and blast gates to get the most out of the new system. The system should be able to easily handle two 4 inch dust ports open at a time and preferably three. Note: one of the 4” gates will be a commercial sized CNC machine at times. The run will be a maximum of 50 feet (my shop is fairly big) Also, must be single phase.

Out of the three systems listed below I would love to hear your feedback and thoughts. Also, any cyclone system I may have missed! I don’t mind spending the money on a quality machine but don’t want to spend more then necessary either.

Oneida 5hp system
http://www.oneida-air.com/inventoryD.asp?item_no=XXK200001H

Clearvue 5hp system
http://www.clearvuecyclones.com/cv-max/20-cv-max-single-phase-with-filters.html

Grizzly 3hp system
http://www.grizzly.com/products/3-HP-Cyclone-Dust-Collector/G0441


8 replies so far

View Fred Hargis's profile

Fred Hargis

3945 posts in 1959 days


#1 posted 11-20-2015 04:24 PM

My choice would be either the Griz or the CV, and i would prefer the CV. I have an Oneida and wish I had went with the CV. (long story, don’t ask). Anyway, I’m a little puzzled by your duct work plan. After buying a really capable DC, you intend to plumb it with 4” ducting? If true, that’s a bad idea (IMHO) and you can get by with a much smaller collector.

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

View MJCD's profile

MJCD

483 posts in 1837 days


#2 posted 11-20-2015 05:21 PM

I agree with Fred – on several points.

The Clearvue is probably the best value for the money – it’s an erector set which requires ‘some’ assembly – plan well, and dedicate several days to it. The Oneida is more turnkey, but costs more per CFM. CV’s CVMax is designed as an 8” system, running anything less than 6” mains will starve the impeller – you could run 2 or 3 6” mains, and still have enough draw.

While using ‘quality metal piping’ is laudable, you would be well-served with #2729 PVC: it’s inexpensive, easy to cut and handle, and will withstand anything you can throw at it – I’ve had mine installed for 3 years, and it’s as good as new. (Do not fall into the old-wives-tale about PVC being potentially explosive via static electricity – there’s ample, abundant information to the contrary).

-- Lead By Example; Make a Difference

View JBrow's profile

JBrow

819 posts in 386 days


#3 posted 11-20-2015 05:30 PM

I decided to upgrade my dust collection from a ½ hp System. I had centralized my dust collection with 4” HVAC. Like your research, I narrowed my search to Oneida, Clear Vue and Grizzly. I work in a 2 car garage, so size was a major factor, but I felt all three could fit. In August 2015, I purchased the Clear Vue CV1800 Bundle (which includes a fine dust collection bin, hanging bracket, and switch box) and the MacRabbet Bin Level Sensor. The Clear Vue folks offered a special that included free shipping, a savings of $100 or more). I also bought a fiber drum from Grainger. All items were undamaged and all parts present. I opted for building a portable enclosure, a description of which is posted on Clear Vue’s forum. It took about a month working 3 days a week, to complete the assembly of the unit. If simply hanging the unit on a wall and putting up with the noise, assembly time should be much shorter (a few hours). Nonetheless, I suspect assembly time with the Clearvue will be longer than with the Grizzly or Oneida.

I found the unit to be powerful, with a well-balanced impeller. The CV1800 moves a lot of air! But the CV1800 is loud and Clear Vue offers no muffler. If noise is a concern, you will have to figure out how to reduce noise on your own. Oneida and Grizzly offer mufflers, but I do not know how effective these are.

One feature of the Clear Vue to consider is the surface area of the filters. If I remember, Oneida and Grizzly offer 96 sq ft, while the Clear Vue offers 300 sq ft. I feel this improves intake air flow and should lengthen the time between filter cleaning. Also regarding the Grizzly 3 hp unit (or any 3 hp), I suspect that it will not deliver the suction and air flow you may want to run open dust collection at two machines. But Grizzly does offer 5 hp units. If you opt for a 3hp unit, you may encounter buyer’s regret, since I have to believe the added 2 hp would have a dramatic enhanced effect on performance. But then you can save several hundred dollars with the 3 hp Grizzly.

During the installation, I had questions that were not answered by the manual. Clear Vue technical support was very patient and answered all of my questions. I communicated by email .

All this said, I am very satisfied with my purchase.

Beware, though, that from all I have read, these larger machines, Grizzly, Oneida, or Clear Vue, perform best with at least 6” diameter main truck lines. Reducing a 6” to a 4” dust collection port starves the collector for air. Dust can accumulate in the main 6” lines. Running all 4” dust lines solves this problem, but the machine will not move the volume of air you may need.

I opted to replace my 4” duct work with 6” SDR sewer and drain pipe, taking care in proved a path to ground for static charges. Six inch duct work was run to the various machines where I transitioned after the 6” blast gates to the machines (9 drops). The Main truck and 6” branch lines required 60 feet of SDR-35 pipe. I installed 4” wide aluminum foil tape on the inside and outside of the pipe and fittings on opposite sides to collect static charges. I ensured continuity throughout the ducting system and grounded the foil tape. This step greatly increased the time required to install the duct work. Metal pipe and fittings solves this problem and go together more quickly but should, but at a greater cost. 24 gauge metal minimum pipe should be used with these big machines.

For machines with single 4” dust collection port; I added a second 4” dust collection port on the machine. The transition from the 6” pipe to dual 4” pipes was made with a 6” x 4” x 4” fitting (6” X 4” D/C ADAPTER) sold by Grizzly. This transition reduces air flow by 12% compared to a 55% reduction with a 6” to a single 4” port.

My total cost, including 60’ pipe, has been ($2800 for CV1800 and enclosure materials & $1200 for pipe, fittings, and accessories. I am just now wrapping up my dust collection upgrade (3 months) and the sting of a $4000 upgrade remains. But in a year, that sting will go away and I am sure I will remain happy with this upgrade.

View AZWoody's profile

AZWoody

697 posts in 690 days


#4 posted 11-20-2015 05:58 PM

I looked at a lot of the different systems and settled on the clearvue cv1800 but to be able to maximize the flow through 6” ducting to the different branches through my shop, they recommended to upgrade the size of the impeller. So basically it’s the cv1800 with the cvmax impeller.

I used 6” S&D pvc pipe for my ducting. Clearvue sells 6” by double 4” transitions which i like, but get the ones that do not have the gates on them. I also like their 6” blast gates. They fit the pvc pipe perfect.

As for the 6” tubing, I then had to modify most of my tools to be able to accept 6”. Others, I did double 4” fittings.

I am going to start making a blog with the results of my air flow tests at different points. I’m happy with the unit but like was said earlier. Just putting it together takes a lot of time and also, the unit is loud. I placed it in an adjacent room.

If you have any questions for more details, you can pm me.

View Jesse's profile

Jesse

58 posts in 1092 days


#5 posted 11-20-2015 07:14 PM

thanks for the replies all. To clear up confusion, I will be running my main duct the same size as the inlet for as far as appropriate and going to 6” down to the machine. Many of my machines have 4” ports and I have no desire to change them so I will not be running 4” pipe on a large dust collector but it may be 4” at the machine. I also have two or more machines running most of the time with my shop assistant so I do not believe the unit will be starved.

View Fred Hargis's profile

Fred Hargis

3945 posts in 1959 days


#6 posted 11-20-2015 07:54 PM

You will do yourself a favor and get much better performance if you upsize those ports wherever possible to 6”. Still, I wish you the best of luck with your purchase. Let us know what you decide.

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

View AandCstyle's profile

AandCstyle

2575 posts in 1723 days


#7 posted 11-21-2015 12:23 AM

Jesse, I agree with most of the advice you have gotten thus far. Since you don’t want to expand the 4” ports, you might consider dropping from 6” rigid tubing to 5” flexible tubing to the 4” ports. The 5” tubing moves 50% more air than 4”.

If possible, locate the collector closer to the tools that produce the largest chips, like a jointer and planer. FWIW

-- Art

View AZWoody's profile

AZWoody

697 posts in 690 days


#8 posted 11-21-2015 03:18 AM



thanks for the replies all. To clear up confusion, I will be running my main duct the same size as the inlet for as far as appropriate and going to 6” down to the machine. Many of my machines have 4” ports and I have no desire to change them so I will not be running 4” pipe on a large dust collector but it may be 4” at the machine. I also have two or more machines running most of the time with my shop assistant so I do not believe the unit will be starved.

- Jesse

Well, saying that there will be more than one machine running at the same time, I”ll say you definitely can rule out the Grizzly. The cvmax, by clearvue can do 2 machines, but it’s based on an 8” main trunk line with 6” drops to the machines.

Running 4” at the machine, you’re going to have a bottleneck. Starving the collector isn’t the problem. It’s just that you cannot move the volume of air needed to collect the dust succesfully at the machine.

Is this a commercial shop? If it is, then you really need to not think on a scope of trying to run 4” and the smaller units. If this is a commercial shop, you’re going to have to meet regulatory standards for true dust collection efficiency.

Call clearvue, oneida and also penn state and tell then what you’re doing and tell them exactly what will be running, how many at a time and duration. In my opinion, if you’re going to try running 4”, you’re going to get very underwhelming results.

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