DC-3300 to DC-6000 upgrade: Yea or Nay?

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bradb
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Re: DC-3300 to DC-6000 upgrade: Yea or Nay?

Post by bradb »

Even going for 200 cfm that still comes out to over 83 mph velocity per hose. That is not what I observe.
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dusty
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Re: DC-3300 to DC-6000 upgrade: Yea or Nay?

Post by dusty »

I can only vouch for how well it does dust collection when attached to the table saw or the belt sander or the jointer. When used it this manner is does all that I ever expected of it and has done so for years.
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claimdude
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Re: DC-3300 to DC-6000 upgrade: Yea or Nay?

Post by claimdude »

+1 Dusty! I have the DC6000 and really like it.

Jack
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dusty
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Re: DC-3300 to DC-6000 upgrade: Yea or Nay?

Post by dusty »

claimdude wrote: Thu Dec 30, 2021 7:14 pm +1 Dusty! I have the DC6000 and really like it.

Jack
I understand. I have a DC-3300 with the upgrade installed.
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Re: DC-3300 to DC-6000 upgrade: Yea or Nay?

Post by JPG »

bradb wrote: Thu Dec 30, 2021 5:32 pm Even going for 200 cfm that still comes out to over 83 mph velocity per hose. That is not what I observe.
Curious what thy observation process consists of.
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dusty
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Re: DC-3300 to DC-6000 upgrade: Yea or Nay?

Post by dusty »

bradb wrote: Thu Dec 30, 2021 5:32 pm Even going for 200 cfm that still comes out to over 83 mph velocity per hose. That is not what I observe.
I too am curious about how/where you make your observations.

I also would like to see some calculations. This little tool ( https://www.engineering.com/calculators ... alculator/ ) does not seem to support some of the claims that are being tossed around.

Please set me straight.
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DLB
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Re: DC-3300 to DC-6000 upgrade: Yea or Nay?

Post by DLB »

bradb wrote: Thu Dec 30, 2021 5:32 pm Even going for 200 cfm that still comes out to over 83 mph velocity per hose. That is not what I observe.
If you think your flow is worse than a DC-3300 remove the plenum and check visually for a clog at the cross in the inlet to the impeller. I once sucked up a couple of dried Cottonwood leaves that would have gone right through a DC-3300 and my airflow went to useless. Lots of things could hang up at this point and create a blockage.

The 10 mph you guesstimated is way below the numbers generally accepted as necessary to keep material suspended in the airflow. While that varies, I'd say ~45 mph is accepted as the minimum needed.

IIRC from a Stumpy Nubs video on the subject, OEMs are inconsistent in how they rate CFM. I guess it is like HP. Some ratings are without hoses and/or without filters/hoods. So those are marketing numbers, and even if a user had the right test equipment he'd be unlikely to replicate those numbers. I don't know how SS determined their numbers for either system. But I think we know from observation that the max airflow the system achieves is with no plenum and no hoses. Perhaps suggesting the plenum is lossy.

- David
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Re: DC-3300 to DC-6000 upgrade: Yea or Nay?

Post by DLB »

I too am curious about how/where you make your observations.

I also would like to see some calculations. This little tool ( https://www.engineering.com/calculators ... alculator/ ) does not seem to support some of the claims that are being tossed around.

Please set me straight.
[/quote] Dusty - that calculator worked for me. I entered 200 CFM, 1.125" radius circular duct, and it came up with 82.3 mph. (First time I tried this I made this mistake: I entered cfm and only a circular radius but did not check the box for circular and it came up with something else. Not a murphy-proof user interface.)

- David
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dusty
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Re: DC-3300 to DC-6000 upgrade: Yea or Nay?

Post by dusty »

DLB wrote: Fri Dec 31, 2021 10:16 am I too am curious about how/where you make your observations.

I also would like to see some calculations. This little tool ( https://www.engineering.com/calculators ... alculator/ ) does not seem to support some of the claims that are being tossed around.

Please set me straight.
Dusty - that calculator worked for me. I entered 200 CFM, 1.125" radius circular duct, and it came up with 82.3 mph. (First time I tried this I made this mistake: I entered cfm and only a circular radius but did not check the box for circular and it came up with something else. Not a murphy-proof user interface.)

- David
[/quote]'

Thank you for that input. I entered the diameter and not the radfius as requested. That makes a big difference and yes - 82.3mph.

Now all we need to do is find a way to measure the air speed created by the DC. My little fan device gives me a repeatable fan rpm meaurement but I can's convert that to lpm or mph or cfm.
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Majones1
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Re: DC-3300 to DC-6000 upgrade: Yea or Nay?

Post by Majones1 »

Back to an earlier point about how many of us can use only a single hose in our small shops and therefore conclude the DC-6000 wouldn’t give us any advantage over what we have with our DC-3300. That is mostly true for me, but I have a Mk5 500 and the upgraded lower blade guard/dust collector attachment has two hose ports that definitely increase the dust collection effectiveness. Even with this better dust collection, a lot of dust still makes it’s way outside the guard/DC attachment. It is here where I would think that the increased CFM might be beneficial. Is there anyone here on the forum who can speak to this configuration?
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Mark 5 Model 500 (1955), s/n: 309828 (MickyD restored in 2008/09) / Magna Jigsaw Model 610, s/n 65001 / Yuba 11” Bandsaw Model 630, s/n 39807 / Magna Jointer Model 620, s/n 17792 (restored in 2021) / Magna 6” Belt Sander Model 640, s/n 13742 (to be restored)
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DC3300 Dust Collector (circa 1998)
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