Panaflo 80mm 12L Fan (replaces L1A)

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doughboy

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Joined 2003
#1
These are great fans. Push good air while being quiet. They also can run on 7 volts, which makes them even quieter. $3.19 each, $2.65 when ordering 10 or more. These sell for $6 or $7 each at most sites. Ill post back when I have the shipping charge for the 10 I ordered. BGMicro is a good company, resellerrating here. With all the recent threads about silencing projectors, I figured some could use these.

Fan Link

"With a fluid dynamic bearing (liquid filled), the Panaflo 12L fan offers the lowest noise per unit air flow without sacrificing reliability. It offers the best of both worlds, allowing NVH (noise, vibration, and harshness) levels lower than that of even a sleeve bearing AND the long life and excellent reliability of a high quality ball bearing."

Airflow: 24.0 CFM
Noise: 21.0 dBA
Static Pressure: 1.57 mm-H20
Rotation Speed: 1900 RPM
Connector: 3-pin
Bearing Type: Hydro Wave
Power Consumption: 0.82 W
Current Draw: 0.068 A
Rated Voltage: 12 VDC Operating Voltage: 7 ~ 13.8 VDC

BGMicro's shipping cost terms
 
#2
hmm nice but their specs must be out for it being a fluid bearing, it should be quieter then that, around the 10- 15db mark.

The fans im using are 23db, specs as follows:

2000rpm
12v
current 0.09A
24.81CFM
1.42 mm-H2O
23db
single ball bearing, single bush.

Maybe their specs are out on your fan, it might not realy be fluid bearings but more of a selling point, who knows but i know mine are silent, will be interesting to see what you think when you get them in.

Trev
 
#7
ace3000_1 said:

Maybe their specs are out on your fan, it might not realy be fluid bearings but more of a selling point, who knows but i know mine are silent, will be interesting to see what you think when you get them in.

Trev
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Yeah at first I thought "HyrdoWave" might just be a catchy name implying something that wasn't true.

Here's panasonic's info: (I guess that's how fluid bearings work?)
http://www.panasonic.com/industrial/appliance/pdf/fanfeatures.pdf
 
#8
Db increases logarithmically remember
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ya i know that, but 2db is still very marginal, 5db is getting up there imo, Eitherway you can only go so quiet as the noise of airflow its self can only go so low before you hit a point where it cant go any lower. In hdd's the fluid bearing is more efective as there is no airflow but a vacume and its probally why there is only a marginal increse in quietness with a fluid bearing fan.

Trev
 
#10
ace3000_1 said:


ya i know that, but 2db is still very marginal, 5db is getting up there imo, Eitherway you can only go so quiet as the noise of airflow its self can only go so low before you hit a point where it cant go any lower. In hdd's the fluid bearing is more efective as there is no airflow but a vacume and its probally why there is only a marginal increse in quietness with a fluid bearing fan.

Trev
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2db increase is actually very large but it depends where abouts it is because human hearing perception of noise levels is very wonky. For example someone would notice a significant difference between 38-40 DB but not much between 14-21 Db. Its hard to predict really too because most mountings will amplify fan noise and vibrations. So you could end up mounting a 21 DB fan somewhere and it would create a racket and a 14DB would be silent even though if you listened to the unmounted fans you would hear no difference.
 
#11
2db increase is actually very large but it depends where abouts it is because human hearing perception of noise levels is very wonky. For example someone would notice a significant difference between 38-40 DB but not much between 14-21 Db. Its hard to predict really too because most mountings will amplify fan noise and vibrations. So you could end up mounting a 21 DB fan somewhere and it would create a racket and a 14DB would be silent even though if you listened to the unmounted fans you would hear no difference.
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Ya i totally agree, it depends on the freq of the noise generated too, resonance of the mounting ect, an intense subject lol.

Trev
 
#13
ace3000_1 said:


Ya i totally agree, it depends on the freq of the noise generated too, resonance of the mounting ect, an intense subject lol.

Trev
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Yeah its very difficult, I've been dissapointed a few times with fans. For example I recently put a 21db fan into my Shuttle mini PC to replace the 36Db stock fan and the 21db fan was ALOT louder when mounted just because of funny quirks with its vibration/resonance pattern (or whatever the proper term is).
 
#14
Yeah can be a pain, if your using a mobo with an amd chip you will find 4 holes around the chips socket, use those with standoffs and screws so it makes that part of the mobo abit more rigid and will help to keep the echoing resonance from the cpu fan down.

Trev
 
#15
ace3000_1 said:
Yeah can be a pain, if your using a mobo with an amd chip you will find 4 holes around the chips socket, use those with standoffs and screws so it makes that part of the mobo abit more rigid and will help to keep the echoing resonance from the cpu fan down.

Trev
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Doesn't have a CPU fan as such, its got a heat pipe with heatsink at the end of it and a fan which blows through the heatsink out of a grill in the back of the case. One fan cools the whole system includinf CPU. Anyway I've just ordered a SilenX 14db 25Cfm fan which has vibration reducing mounting points 🙂 They a bit pricey though.
 
#16
It helps to mount fans that vibrate with an intermediary. A rubber gasket or even rubber bands work. I used rubber bands rapped around the bolts and sandwiched between the metal for a high flow 120mm YSTech fan, and it did wonders.

I have an Aeroflow cooler on my P4 that vibrates like a champ. The computer is on carpet, but the vibrations can be heard through the walls of my house. The aeroflow has its days numbered.

Duct tape even works well in some occasions. I wouldn’t call it a permanent solution, but it does keep the fan in place and away form the surface.
 
#17
It helps to mount fans that vibrate with an intermediary. A rubber gasket or even rubber bands work. I used rubber bands rapped around the bolts and sandwiched between the metal for a high flow 120mm YSTech fan, and it did wonders.
Click to expand...

If you got an old cd rom around, the mounts for the mechcanisim on the cradle work wonders, its like full on suspention lol, but yeah they work great.
 
#18
Doesn't have a CPU fan as such, its got a heat pipe with heatsink at the end of it and a fan which blows through the heatsink out of a grill in the back of the case. One fan cools the whole system includinf CPU. Anyway I've just ordered a SilenX 14db 25Cfm fan which has vibration reducing mounting points They a bit pricey though.
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Thats what i call a respectible specifacation, nice!

As they say, you get what you pay for.

Trev
 
#19
I'm still curious as to why Papst hasn't tried to get their products out to more US resellers. Great fans.

I'd take a panaflo though, since you can occasionally find their fans for really cheap (seen 80mm M1A's for 0.99 a piece with bare wires a few times over the years).
 
#20
Here's a link to the SilenX fans if you need a really quiet fan.

http://www.silenx.com/productcart/pc/configurePrdz.asp?idcategory=3&idproduct=76

Features:
Fan Swept Forward Fan Blade Design
Smoother, Thinner Fan Blades
Highly Efficient Hypro Bearings
Vibration Isolation Mounts

Specifications:
Fan Dimensions: 120 x 120 x 25mm
Fan Input: 12V/1.2W
Fan Speed: 1800 RPM
Air Flow: 58 CFM
Noise Level: 14 dBA
Three Pin Connector
Four Pin Connector



Hezz
 

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