Quietest 6" In-Line Fan?
- Thread starter Rrog
- Start date
PSUAGRO.
Well-Known Member
http://growershouse.com/hyper-fan-stealth-8-in-710-cfm?keyword=&gclid=CPnEsKOJ5ssCFUEkhgodos4ISw
just a 8 inch hyperfan in a muffler
hyper 8 vs vortex s 8==== you pick Rrog
just a 8 inch hyperfan in a muffler
hyper 8 vs vortex s 8==== you pick Rrog
kmog33
Well-Known Member
This is a good distinction between fan and air noise. Air makes noise when you force it to move at high speeds, dealing with where the air goes and what it goes through is probably 70% of the issue.
Speed controllers are the best noise reducers for fans Ime. A fan running at 80% is exponentially quieter than running a fan at full bore. I would say at least half of the spl is perceptively reduced.
Bubblegum31
Well-Known Member
I like this!
thegreensurfer
Well-Known Member
Max fan.....for even extra silence go with a bigger size and slow the speed down.
thegreensurfer
Well-Known Member
Yes exactly. The max fan already comes with a 3-speed switch. The fans are also not as big or heavy as every other brand, use less watts, provide more CFM, and are overall more efficient. With a background in engineering I appreciate the craftsmanship of it.....it's made in Germany so you can probably imagine the quality.. It'll cost you more, but you get what you pay for.
Vortex is good. I just wish they didn't have the big heavy steel housing...especially if you have tents where equipment weight adds up.
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Rrog
Well-Known Member
Thanks for the clarification. I'll be loking at an 8" fan for my 6" duct. Better to run the 8" with a 6" reducer than run a 6" with no reducer from a CFM standpoint. More noise.
Specs look stronger with the Vortex VTX800 than the 8" Can Max. Unless their info is wrong, the Can drops off to very low CFM after 1.25" static pressure
Specs look stronger with the Vortex VTX800 than the 8" Can Max. Unless their info is wrong, the Can drops off to very low CFM after 1.25" static pressure
whitebb2727
Well-Known Member
I run a variac instead of the cheap fan controllers. The cheap ones start and stop the motor several times a second. The variac controls the voltage to the motor. The variac is quieter than the fan controllers and easier on the motor.
You are spot on about the noise.
A duct muffler can be built very easy. I built one with a box and one with an old carbon filter housing.
This is the variac I have. It is available on amazon.
http://www.ebay.com/itm/like/262315683866?lpid=82&chn=ps&ul_ref=http%3A%2F%2Frover.ebay.com%2Frover%2F1%2F711-117182-37290-0%2F2%3Fmtid%3D1588%26kwid%3D1%26crlp%3D53601919689_324272%26itemid%3D262315683866%26targetid%3D154774679289%26rpc%3D0.13%26rpc_upld_id%3D67030%26device%3Dm%26mpre%3Dhttp%253A%252F%252Fwww.ebay.com%252Fulk%252Fitm%252Flike%252F262315683866%253Flpid%253D82%2526chn%253Dps%26adtype%3Dpla%26googleloc%3D2840%26poi%3D%26campaignid%3D239125209%26adgroupid%3D14978428809%26rlsatarget%3Dpla-154774679289%26gclid%3DCMyetuX85ssCFVhZhgodDXQHyQ%26srcrot%3D711-117182-37290-0%26rvr_id%3D1006262051414&ul_noapp=true
whitebb2727
Well-Known Member
Its not the fan that makes the noise. Even my cheap fan is quiet. The air movement is where most the noise is.
If you notice the video its not the fan, its the bid muffler that makes it quiet. The housing is also insulated.
You take any fan and wrap it. Then put a longer run of duct. Run insulated duct. Build or buy a muffler.
Sure, buy the high dollar fan. I'm all for that. I'm just letting people know, that have a budget, than any fan can be silenced.
http://rollitup.org/t/quiet-the-neighbors-can-hear-you-sound-control-thread.122532/
This is a good read.
thegreensurfer
Well-Known Member
Also, if you're having noise in the ducting it helps quite a bit to wrap a towel around the ducting where it connects to the exhaust port of the fan
thegreensurfer
Well-Known Member
Both the air movement and the motor make noise, air movement creates the whoosh and the motor creates the hum.
With the max fan, the quieter performance is because there isn't such a large housing and impeller design is engineered better. Germans......
Bubblegum31
Well-Known Member
Alot of ppl do that but I see it dangerous!!!
Those fanse are not designed to be insulated they need to be cooled
I know I know alot of ppl do that but I dont feel right about it specially if you will push alot of hot air through it.
Bubblegum31
Well-Known Member
Also dangerous
No papier towels, textiels or any thing that can burn easly ever inter my grow room.
I have 2 automatic fire distinguisher and one manual.
Maybe am paranoid?!!
thegreensurfer
Well-Known Member
I'm not advocating wrapping the fan itself but the ducting immediately following the exit ducting near the fan, this is where most of the noise is. I'm paranoid about fires too brotha, I have nightmares about it, which is why I only buy high end grow equipment.
Bubblegum31
Well-Known Member
Same in here brother!!
whitebb2727
Well-Known Member
If you mount the fan on rubber mounts there is no hum. I have had people stand right next to my grow cab and have no idea what's in it. It makes a little noise but not much.
Take a little time to engineer your setup and the noise is not bad. I vent outside and have a fan running in that room and you can't tell.
It doesn't hurt them and it will not cause it to over heat. My fan actually came wrapped with vinyl with a type of foam. Its not thick. The air that goes through them also cools it.
Don't let those companies fool you. Its not some new design. Its an insulated fan.
Depending on how you set it up, wrapping and boxing the fan will actually make the fan run cooler.
I have worked industrial maint and trades type work all my life. I have no concerns about wrapping a fan.
whitebb2727
Well-Known Member
If anyone is wondering, I do in fact rebuild and bake my filters. There is a lot of misleading info on the net. I think that info is their to lead you into buying that $100+ filter.
Yea, yea, they have a special machine to fill them. Its a simple vibrating table. Packing by hand and shaking it does a good job.
An inline fan has an impeller like a turbo or jet engine. An inline fan is capable of handling heat. The design of an inline fan has been around for quit a while. There is only so far you can push the design and efficiency. Inline fans now are not much different than ones from years ago.
If your fan is vibrating or humming, there is something wrong with it. Any company that takes the time to balance their fans and use quality parts will have a good fan. A good bunch of these fans are made by the same company or use the same parts. They have been around so long the patent is up on them. Anyone can make them. Fans with doodads and whatnot are that way because of the patent.
Just a little food for thought.
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