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Rosen_Rot
Learning



Registered: 12/06/14
Posts: 1,225
Loc: Goa
Last seen: 11 months, 22 days
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More ducting on my laminar?
#23779006 - 10/28/16 01:29 AM (7 years, 3 months ago) |
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"The internet has one rule; use or be used" - Bjeldiablo ''there is no loneliness, only moments where contentment is fleeting'' SBJs "The Basics" 3iRiS9 "Cirque du freak" B+ BONANZA
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enlightenment
alchemist


Registered: 08/09/09
Posts: 1,647
Loc: Europe
Last seen: 8 months, 21 days
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Re: More ducting on my laminar? [Re: Rosen_Rot]
#23779032 - 10/28/16 01:56 AM (7 years, 3 months ago) |
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Do you have the data sheet of the filter? It looks like your blower is not powerful enough because it would need around 670m³ volume flow without pressure for a filter in this size. To get a flow of 0,5m/s + pre filter + factor in the PA curve of your filter... i think it is too weak. Sorry.
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wtfcrazymofo
foil hater



Registered: 07/26/15
Posts: 1,201
Loc: Colonial alley
Last seen: 11 hours, 41 minutes
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Re: More ducting on my laminar? [Re: Rosen_Rot]
#23779088 - 10/28/16 02:57 AM (7 years, 3 months ago) |
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You need close to 375cfm@1.2 SP so you need about a 650-750cfm blower. Did the polyfill get jammed in your blower? Throw that polyfill away and use a house filter.
-------------------- If you want to eat->https://www.shroomery.org/forums/showflat.php/Number/8553541 Bag sealers are to bulky (my hood isn't that big) https://www.shroomery.org/forums/showflat.php/Number/28622922
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Rosen_Rot
Learning



Registered: 12/06/14
Posts: 1,225
Loc: Goa
Last seen: 11 months, 22 days
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This is the spec sheet that came with it and it's rated at 200CFM. I am in a little hurry right now cause I am late for a class, I'll find a flanders spec sheet once I get home

The filter and blower are the same a Supalemonhaze and his laminar works completely fine. I took off the casing that covers the blower and more air is being pushed but a little bit too powerful now. I honestly think it's the ducting and not enough air is being sucked into the blower to be pushed out
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"The internet has one rule; use or be used" - Bjeldiablo ''there is no loneliness, only moments where contentment is fleeting'' SBJs "The Basics" 3iRiS9 "Cirque du freak" B+ BONANZA
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wtfcrazymofo
foil hater



Registered: 07/26/15
Posts: 1,201
Loc: Colonial alley
Last seen: 11 hours, 41 minutes
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Re: More ducting on my laminar? [Re: Rosen_Rot]
#23779138 - 10/28/16 03:52 AM (7 years, 3 months ago) |
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In the you tube vid it did sound stifled. Pluck the fill. Turn it up to max blow. Check that with a bic.
-------------------- If you want to eat->https://www.shroomery.org/forums/showflat.php/Number/8553541 Bag sealers are to bulky (my hood isn't that big) https://www.shroomery.org/forums/showflat.php/Number/28622922
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blindingleaf
blue collar underworld


Registered: 07/19/13
Posts: 22,008
Loc: sub-surface unseen
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Quote:
I took off the casing that covers the blower and more air is being pushed but a little bit too powerful now. I honestly think it's the ducting and not enough air is being sucked into the blower to be pushed out
i had a similar situation with mine. i don't have housing for my blower, so the pre filter has to be right up against the blowers intake (its squirrel cage style but still applies). when i used a "nicer" pre filter, the flow would be too slow. NO pre filter, and the flow is too fast. so i got one of these
http://3u0gdv3vukuf15vp9312siwh2cg.wpengine.netdna-cdn.com/wp-content/uploads/2015/04/Screen-Shot-2015-04-07-at-2.25.46-PM.png
it barely filters more than a green scrubby, but it affects the intake perfectly for me.
-------------------- A few thoughts on cultivation MICROBIAL HUSBANDRY!!!! The whole is greater than the sum of its parts
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liloldme
( ͝° ͜ʖ͡°)つ=D



Registered: 05/15/04
Posts: 5,087
Loc: Zone 8
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My blower motor is too hardcore for my little 12x24 flowhood. I'm using 2 layers of cotton fabric to slow it down as my prefilter.
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blindingleaf
blue collar underworld


Registered: 07/19/13
Posts: 22,008
Loc: sub-surface unseen
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Re: More ducting on my laminar? [Re: liloldme]
#23779211 - 10/28/16 04:50 AM (7 years, 3 months ago) |
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i love hardcore blowers tho
-------------------- A few thoughts on cultivation MICROBIAL HUSBANDRY!!!! The whole is greater than the sum of its parts
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Rosen_Rot
Learning



Registered: 12/06/14
Posts: 1,225
Loc: Goa
Last seen: 11 months, 22 days
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What makes my situation more comfortable is that I have reference with a local, and very good at that, grower. I am using the same filter size, same blower and same pre-filter material as him so as of this I am sure it is not the blower nor the filter otherwise there would be no success from his end.
I was considering buying something like that Leaf but over here we're kinda redneck. I believe my problem is the air intake comes from the top and the casing ventilation is on the side and only 4inches.
No I am using a 7inch duct on the top.
My predictions will be that now the flow will be too fast so it's a matter of adjusting my pre-filters till that lighter flame comes to 45
*sigh*
Another day another struggle
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"The internet has one rule; use or be used" - Bjeldiablo ''there is no loneliness, only moments where contentment is fleeting'' SBJs "The Basics" 3iRiS9 "Cirque du freak" B+ BONANZA
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blindingleaf
blue collar underworld


Registered: 07/19/13
Posts: 22,008
Loc: sub-surface unseen
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Re: More ducting on my laminar? [Re: Rosen_Rot] 1
#23779447 - 10/28/16 07:34 AM (7 years, 3 months ago) |
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maybe try and use a green scrubby
that filter i linked is the most redneck of all "professionally" made pre filters….just look at it 
supp is the shit, thats cool u guys are neighbors
my hood isn't completely laminar. if u hold a lighter up to it, there is a section where it more like 45 degrees, but mostly its closer to 90. its fine for me.
edit: rinse the green scrubby first if u use it cause it always has a lot of green powder when u first use them. big ups to my fellow current/former restaurant dishwashers on that pro tip, u know what I'm talking about
-------------------- A few thoughts on cultivation MICROBIAL HUSBANDRY!!!! The whole is greater than the sum of its parts
Edited by blindingleaf (10/28/16 07:41 AM)
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sandy_vag
Keep Dreaming



Registered: 06/14/16
Posts: 112
Last seen: 5 years, 8 months
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That filter isn't a really good choice for a flowhood filter, it only has 0.39" wg resistance. You want more than that, around 0.8 - 1 inch. for a nice flowhood hepa filter. You can still probably use it with some success but it wont be ideal. Probably wont make a true laminar flow.
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sandy_vag
Keep Dreaming



Registered: 06/14/16
Posts: 112
Last seen: 5 years, 8 months
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Re: More ducting on my laminar? [Re: sandy_vag]
#23779540 - 10/28/16 08:44 AM (7 years, 3 months ago) |
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You can get a bigger blower and use a $20 harbor freight "router speed controller" to control the fan speed also. Much cheaper than a labeled fan speed controller ($50+) and it's the exact same thing, you can dial in the fan speed no prob.
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Rosen_Rot
Learning



Registered: 12/06/14
Posts: 1,225
Loc: Goa
Last seen: 11 months, 22 days
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Quote:
sandy_vag said: That filter isn't a really good choice for a flowhood filter, it only has 0.39" wg resistance. You want more than that, around 0.8 - 1 inch. for a nice flowhood hepa filter.
It has only 0.39'' because it's 4inches thick, not 6inches like your standard 24 x 24 x 6 filters. You just add .9 resistance and you'll get 100ft3/min flow filter face
Quote:
You can still probably use it with some success but it wont be ideal. Probably wont make a true laminar flow.
Yeah you can tell that to Supa and his LCs and numerous amounts of good genetic growth he achieved through the same filter and same blower Nothing we construct is ever true laminar flow but close enough.
Quote:
sandy_vag said: You can get a bigger blower and use a $20 harbor freight "router speed controller" to control the fan speed also. Much cheaper than a labeled fan speed controller ($50+) and it's the exact same thing, you can dial in the fan speed no prob.
Unnecessarily. My blower is matched up perfectly
Quote:
blindingleaf said: supp is the shit, thats cool u guys are neighbors
He's been the spice of my life. I'm glad I found a friend locally, now I can do things the European way
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"The internet has one rule; use or be used" - Bjeldiablo ''there is no loneliness, only moments where contentment is fleeting'' SBJs "The Basics" 3iRiS9 "Cirque du freak" B+ BONANZA
Edited by Rosen_Rot (10/29/16 01:21 AM)
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