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natedawgnow
Rocky mountain hood rat



Registered: 02/09/15
Posts: 8,940
Loc: ation
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Inline vs. squirrel cage blowers
#23962919 - 12/28/16 02:38 PM (7 years, 2 months ago) |
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What's up everyone
So I know this has been talked about before and that RR and some other old hands have claimed that inline blowers like vortex and hydrofarm don't really work for laminar flowhoods and that squirrel cage blowers are necessary.
I have also seen some old hands, like damion5050 and others, use inlines for their builds, but I haven't seen any testimony as to how much they like them or if they work well after extended use.
So I want to hear from those of you who use inline blowers in your hoods. Do you like the inline and does your hood function properly? Have you noticed any unnecessary wear and tear from the spinning vortex of air as RR claims?
Those of you who have used both squirrel cages and inlines, do you notice a significant difference in the functionality of the hood?
I'm trying to find a blower right now and inlines are much cheaper and can produce the cfms I need for my filter where a squirrel cage blower is more expensive for the size I need.
Any help or insight is appreciated!
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Jabensis
Daddy



Registered: 02/14/07
Posts: 541
Loc: Copperhead Road
Last seen: 3 years, 5 months
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Re: Inline vs. squirrel cage blowers [Re: natedawgnow]
#23962973 - 12/28/16 02:56 PM (7 years, 2 months ago) |
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Quote:
natedawgnow said: I'm trying to find a blower right now and inlines are much cheaper and can produce the cfms I need for my filter where a squirrel cage blower is more expensive for the size I need.
Any help or insight is appreciated!
try craigslist. you can typically find a person getting rid of their old squirrel cages for a decent price. of course it would require plenty of cleaning.
Sorry can't comment on inline vs squirrel... I use squirrels only.
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natedawgnow
Rocky mountain hood rat



Registered: 02/09/15
Posts: 8,940
Loc: ation
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Re: Inline vs. squirrel cage blowers [Re: Jabensis]
#23962989 - 12/28/16 03:03 PM (7 years, 2 months ago) |
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Ya I've checked. There is one guy who has one but no specs. Says it was for a 4 ton furnace so I imagine it's big. Guess I could try and dial one down
The inlines I have seen on ebay are like 90 bucks though brand new for exactly the size I need, though
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d0urd3n
Just call me "D"

Registered: 09/15/10
Posts: 5,237
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Re: Inline vs. squirrel cage blowers [Re: natedawgnow]
#23963021 - 12/28/16 03:15 PM (7 years, 2 months ago) |
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Yeah I'm also curious.
I was working on a build last year and saw RR say the same thing. I've never seen a post of anyone saying t caused issues though and I think quite a few people have use inlines. They seem to be cheaper and take up less space.
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natedawgnow
Rocky mountain hood rat



Registered: 02/09/15
Posts: 8,940
Loc: ation
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Re: Inline vs. squirrel cage blowers [Re: d0urd3n]
#23963455 - 12/28/16 06:04 PM (7 years, 2 months ago) |
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Ya they are significantly cheaper and you can mount them inside the hood itself supposedly making a much more uniform and sleek build.
I'd really like to know for sure if there are any downsides before pulling the trigger on one
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inski
Cortinariologist



Registered: 02/28/06
Posts: 5,759
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Re: Inline vs. squirrel cage blowers [Re: natedawgnow]
#23963588 - 12/28/16 06:56 PM (7 years, 2 months ago) |
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I have built a small flowhood using an inline blower and it works great, I don't remember any of my specs now but I do know that the blower I got was designed to be safely run with a speed controller which I did, I have used the hood for about four years with no significant problems.
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Kenetic
Nam Sayin



Registered: 08/24/14
Posts: 4,389
Loc: I don't believe in land
Last seen: 5 years, 4 months
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Re: Inline vs. squirrel cage blowers [Re: inski]
#23963632 - 12/28/16 07:16 PM (7 years, 2 months ago) |
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https://www.shroomery.org/forums/showflat.php/Number/17725558
However:
https://www.shroomery.org/forums/showflat.php/Number/16796589
IMO if you haven't found too many posts saying inlines are terrible it might be worth checking out. RR does have a good point but if it works, it works. The goal is clean cultures after all.
-------------------- Todo Cambia    DMT said: Everyone know's me, they just don't know it yet
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Mycolorado
Hobbyist


Registered: 07/23/16
Posts: 8,557
Loc: Interdimensional Bootcamp
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Re: Inline vs. squirrel cage blowers [Re: Kenetic] 1
#23963827 - 12/28/16 08:31 PM (7 years, 2 months ago) |
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From what I gather the squirrel cage blower works better as it can handle the static pressure better than a centrifugal. It can also be difficult to find a centrifugal that produces enough cfm for a larger filter. They prolly work fine for a small filter (12"x12"). Check HVAC/furnace repair or junk yard type places to get a used one. It'll need cleaned up as mentioned. Here's one I cleaned up and replaced the motor on for about $80 total.

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Kenetic
Nam Sayin



Registered: 08/24/14
Posts: 4,389
Loc: I don't believe in land
Last seen: 5 years, 4 months
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Re: Inline vs. squirrel cage blowers [Re: Mycolorado]
#23963898 - 12/28/16 08:56 PM (7 years, 2 months ago) |
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-------------------- Todo Cambia    DMT said: Everyone know's me, they just don't know it yet
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natedawgnow
Rocky mountain hood rat



Registered: 02/09/15
Posts: 8,940
Loc: ation
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Re: Inline vs. squirrel cage blowers [Re: Mycolorado]
#23964048 - 12/28/16 10:00 PM (7 years, 2 months ago) |
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Quote:
Mycolorado said: From what I gather the squirrel cage blower works better as it can handle the static pressure better than a centrifugal. It can also be difficult to find a centrifugal that produces enough cfm for a larger filter. They prolly work fine for a small filter (12"x12"). Check HVAC/furnace repair or junk yard type places to get a used one. It'll need cleaned up as mentioned. Here's one I cleaned up and replaced the motor on for about $80 total.


Did you know the specs on the blower before you bought it? I have checked a few hvac places via phone call and none of them know the specs on any of the used blowers they have. I guess I can just get a big one and dial it down right?
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d0urd3n
Just call me "D"

Registered: 09/15/10
Posts: 5,237
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Re: Inline vs. squirrel cage blowers [Re: natedawgnow]
#23964113 - 12/28/16 10:19 PM (7 years, 2 months ago) |
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I found one for less than 100 that could run a 2x3 helpa with a prefilter. I will check when I get home think I bookmarked it.
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natedawgnow
Rocky mountain hood rat



Registered: 02/09/15
Posts: 8,940
Loc: ation
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Re: Inline vs. squirrel cage blowers [Re: d0urd3n]
#23964147 - 12/28/16 10:28 PM (7 years, 2 months ago) |
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Dude please do!? A squirrel cage or inline? I have found a couple inlines that could do the job easily for under 100, too.
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d0urd3n
Just call me "D"

Registered: 09/15/10
Posts: 5,237
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Re: Inline vs. squirrel cage blowers [Re: natedawgnow]
#23964180 - 12/28/16 10:37 PM (7 years, 2 months ago) |
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Inline. Pretty sure it was under 100. Either way it was not much more than 120 I think.
Bookmarked it like a year ago hopefully the link isn't dead.
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Mycolorado
Hobbyist


Registered: 07/23/16
Posts: 8,557
Loc: Interdimensional Bootcamp
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Re: Inline vs. squirrel cage blowers [Re: natedawgnow]
#23965123 - 12/29/16 10:17 AM (7 years, 2 months ago) |
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No idea on specs...you can either back it down with a speed adjust or you can dampen the intake. I picked mine up for $20 though could probably have paid $10 if I haggled. I replaced the old 1/5 hp motor with a new 1/3 hp motor for $50 and spent $10 on paint. Again, I'd shy away from an inline, especially if you're running a larger filter. Here's a chart illustrating the drastic drop off in CFM of an inline due to static pressure. Pretty sure most HEPAs have about 2"SP with an additional .2SP for the pre-filter.
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natedawgnow
Rocky mountain hood rat



Registered: 02/09/15
Posts: 8,940
Loc: ation
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Re: Inline vs. squirrel cage blowers [Re: Mycolorado]
#23965148 - 12/29/16 10:30 AM (7 years, 2 months ago) |
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The one I have is 2'x2' at 1" sp, so I need a blower that can blow at least 450 cfm at 1.2" sp. I've been looking at an inline that is 1100 cfm at open air and the manufacturer told me it will work at the sp needed.
But if you scored that blower for 20 bucks then I might as well just try to get a used large 1/3 hp motor and dial it down a bit. Thanks for the insight mange!
I have 2 filters, I may just buy an inline and do both then compare and contrast
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