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Forum topic by rolandk posted 12-21-2016 08:35 PM 1389 views 0 times favorited 17 replies Add to Favorites Watch
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rolandk

16 posts in 365 days


12-21-2016 08:35 PM

I know this may not be a new topic but I’ve searched and could not find an answer.
I have just bought a new 2hp HF-DC and a SDD. I would like to mount the Blower directly atop the SDD without reducers or adapters while increasing the inlet port from 4” to 6” to match the outlet port on the cyclone. I know some of you are far more experienced with dust collection than I am and am hoping to increase the air flow as much as possible. This is my first DC system and want to get the most out of it. Thanks


17 replies so far

View WhyMe's profile

WhyMe

909 posts in 1395 days


#1 posted 12-21-2016 11:11 PM

I modified my HF DC and added the SDD. I had to modify a 5” to 6” reducer to connect the blower to the SDD.
http://lumberjocks.com/projects/172506

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rolandk

16 posts in 365 days


#2 posted 12-21-2016 11:34 PM



I modified my HF DC and added the SDD. I had to modify a 5” to 6” reducer to connect the blower to the SDD.
http://lumberjocks.com/projects/172506

- WhyMe
Thank you very much. I will post my pictures after the new year as I have all the parts now.

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EugdOT

209 posts in 389 days


#3 posted 12-21-2016 11:56 PM

Check out diyTyler on YouTube he has a good tutorial on how to do it.

https://youtu.be/0RAoj4urS-Y

I myself am going to do a mobile version more like this with a shop fox system

https://youtu.be/QxzTCzNnFUU

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WhyMe

909 posts in 1395 days


#4 posted 12-22-2016 12:00 AM

You questioned on my project page the size of the blower inlet and height of system. The inlet OD on the blower is 5”, and I left it at 5” where connected to the SDD using a modified reducer. Overall height is 86”

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go4tech

7 posts in 859 days


#5 posted 12-22-2016 12:29 AM

Did the same thing mod. Yes, you are right to maintain large diameters to maintain volume flow rates.

Made a series of 6” ID rings to form a collet that accepted the top of the SDD with an interference fit. The inlet to the HD DC was modified to remove the ~5” riser. The collet was mounted to the HF DC with construction adhesive (pulling vacuum) so no additional mechanical needed. Air flow spins the right direction. All good!

Build a sweep to take the 6”x4” rectangular output of HF DC blower directly into Wynn Environmental nano filter.

Made an additional modification to ensure 18” of straight 5” flexible (room for improvement by upgrading to solid) hose feeding SDD. Improved flow rate through hose.

Very happy with it. Results are:

Measured results through the entire 25’ length of the 5” flex hose (present use case):

- FPM = 5900 (meter peaks at ~ 6200 and does not seem to get below 5800),
- Custom Hose Connection = 4” ID (small 4” ID ABS pipe section. Pipe doubled to fit flex hose, Fits over existing 4” ports on BS and Jointer, and into custom 90 degree bend pipe on TS),
- CFM = 515 CF/M
- Noise Level = 86 dBa

A picture is in reply to bkseitz’s post about similar subject (sans hose). (If one knew how to link, one would) .

Hope this is helpful.

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rolandk

16 posts in 365 days


#6 posted 12-22-2016 01:10 AM



Check out diyTyler on YouTube he has a good tutorial on how to do it.

https://youtu.be/0RAoj4urS-Y

I myself am going to do a mobile version more like this with a shop fox system

https://youtu.be/QxzTCzNnFUU

- EugdOT

Yes I liked Tylers set up also thanks for sharing.

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rolandk

16 posts in 365 days


#7 posted 12-22-2016 05:19 AM

Thank you all for your generous advise and time. You have not only answered my questions but givin me more information than I had hoped for

View playingwithmywood's profile

playingwithmywood

350 posts in 1431 days


#8 posted 12-22-2016 05:34 AM

If someone is looking to start from scratch then just buy a pre-made cyclone system to start with

but I like a lot of others I already had the HF collector and the Wynn filter

but I skipped the super dust deputy and bought a cyclone funnel from grizzly

https://www.grizzly.com/parts/P0703P013 selling now for $150
instead of the mentioned super dust deputy selling for $180 made of plastic

they open top design of the grizzly allowed better mounting and better overall conversion in my opinion
here is my build http://lumberjocks.com/reviews/7842

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Rob_s

171 posts in 456 days


#9 posted 12-22-2016 12:12 PM

If starting from scratch, when I did the math you’re better off buying a factory cyclone by the time you buy all the parts and pieces to cobble one together. I’d only go the HF conversion route if I already owned the HF.

-- www.facebook.com/therealbnrlabs

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WhyMe

909 posts in 1395 days


#10 posted 12-22-2016 01:45 PM


If starting from scratch, when I did the math you re better off buying a factory cyclone by the time you buy all the parts and pieces to cobble one together. I d only go the HF conversion route if I already owned the HF.

- Rob_s

At the time I modified the HF DC it was about $1000 for the cheapest cyclone dust collector. I have around $600 total in my modified HF DC. If I put a value on my time then I didn’t save much money, if any. But I enjoyed doing the mods. Looking back, if I didn’t already have the HF DC I may have bought a ready made system. But then that $300 – $400 I didn’t spend went to other tools. I had plenty of time, but not a lot of money.

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Rob_s

171 posts in 456 days


#11 posted 12-22-2016 02:27 PM


If starting from scratch, when I did the math you re better off buying a factory cyclone by the time you buy all the parts and pieces to cobble one together. I d only go the HF conversion route if I already owned the HF.

- Rob_s

At the time I modified the HF DC it was about $1000 for the cheapest cyclone dust collector. I have around $600 total in my modified HF DC. If I put a value on my time then I didn t save much money, if any. But I enjoyed doing the mods. Looking back, if I didn t already have the HF DC I may have bought a ready made system. But then that $300 – $400 I didn t spend went to other tools. I had plenty of time, but not a lot of money.

- WhyMe

When I did my calculations I included having a remote-start, and some other features that aren’t totally necessary but I wanted an apples:apples comparison.

I’m in the opposite boat, no time. I can’t really afford to have my shop time “wasted” monkeying with building my own tools and such. I’m over a year in to owning my shop and I’m still dicking around with basics like lumber storage.

-- www.facebook.com/therealbnrlabs

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playingwithmywood

350 posts in 1431 days


#12 posted 12-23-2016 04:59 AM



If starting from scratch, when I did the math you re better off buying a factory cyclone by the time you buy all the parts and pieces to cobble one together. I d only go the HF conversion route if I already owned the HF.

- Rob_s

after looking at prices for pre-made systems again it seems the good deal that Grizzly had is gone and the price for the basic system has increased they do not seem to sell a collector with the one piece funnel I had purchased any more even though it seems like it is still for sale on the parts page.

this it the cheapest cyclone I see on that site and it is out of stock but the point it that is has a 2 piece funnel
http://www.grizzly.com/products/1-1-2-HP-2-Stage-Cyclone-Dust-Collector/G0703?utm_campaign=zPage&utm_source=grizzly.com

and you can see the one in my build I linked a few posts above was a one piece unit

the main downside of the HF collect is that it has a smaller impeller than the cyclone systems are normally made with. In the thread of my build their was talk of people buying a bigger impeller from Rikon but I have not followed up any more with that… with short runs and one machine at a time mine is serving its purpose

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OSB

147 posts in 360 days


#13 posted 12-23-2016 05:06 PM

This thread and the videos got me reading Bill Pentz’ cyclone dust collector page.

My head hurts now, every page seems to retread the same story about dust causing him health problems but very little information that the link title would suggest.

The general gist of the page is that most cyclonic systems do fine at collecting visible size dust but the smaller stuff winds up coming right back out so you either need a big 5 hp cyclonic system with $$ filters or something that exhausts outside of the shop where the dust can disperse to safe levels in the air.

He claims to have information about how to design a cyclone system but all I have found are a couple hints.

I am pretty sure I don’t have sufficient house wiring for a 5 hp blower motor so it looks like my best plan is to work outdoors with a small dust collector system to get the chips and I’ll wear a respirator to filter out the small particles. That should contain the mess and protect my lungs.

Pentz doesn’t seem to discuss any solution like that.

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rolandk

16 posts in 365 days


#14 posted 12-24-2016 01:00 AM

So far my total expenses are:
HF DC = $170.00
SDD = $170.00
Wynn 35BA222Nano = $210.00
2 sheets plywood = $65.00
Total expense $615.00
sense of accomplishment = priceless

The very cheapest cyclones I have found run between $1,000 to 1,300.
Planned use for the savings. a new router for my router table.
I am retired and don’t count my time as loss of income or I probably would have gone with the Oneida cyclone.

View playingwithmywood's profile

playingwithmywood

350 posts in 1431 days


#15 posted 12-24-2016 04:53 AM



So far my total expenses are:
HF DC = $170.00
SDD = $170.00
Wynn 35BA222Nano = $210.00
2 sheets plywood = $65.00
Total expense $615.00
sense of accomplishment = priceless

The very cheapest cyclones I have found run between $1,000 to 1,300.
Planned use for the savings. a new router for my router table.
I am retired and don t count my time as loss of income or I probably would have gone with the Oneida cyclone.

- rolandk

not knocking what you are doing and glad you are having success with your project…. I just feel for the new person coming here for advice and I do not want people to be led astray if someday they think they are going to have a drum sander, band-saw, table saw, 8” joiner and big planer at some point. I think it is best to advise them to buy an premade cyclone to start with that should offer better performance long term

one problem come if you try to sell you cobbled system and that is not a insult mine is cobbled also and if you see my system in the link in the post above it seems cobbled pretty well but I would probably never get my money back out of it selling it like I would have if I had purchased a pre-made system and taken care of it

This for not much more money long term
http://www.grizzly.com/products/1-1-2-HP-2-Stage-Cyclone-Dust-Collector/G0703 has a 13.5” impeller something our HF collector does not have this is why some have upgraded to a impeller that rikon has on one of their units that is similar to the HF but bigger

so if someone wants to build a cobbled system and have some satisfaction doing so and have the system configured to custom fit their shop then more power to them that is what you are doing and I have done but I just want to talk as honestly as possible for others that might read this a year from now so they can check out the best options for them

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