- Jul 15, 2005
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I hear alot about Nexus and Yate Loon D12SL-12 120mm fans and Panaflo L1A 120mm fans, but rarely about 80mm and 92mm fans. Any recommendations or links that may better inform me?
Originally posted by: GalvanizedYankee
Because Zepper called my name into this thread and I told you, OP, via PM reply that my thoughts would be posted here, I do it.
Poorly manufactured fans need extra bearing clearance to make-up for inaccurate machining. That is why some sleeve or ball bearing fans will click more than others when undervolted. Remember the shafts are quite small and that dictates tight running clearances. Quality of manufacture and materials does no come cheap when buying retail.
There is an exception....High speed fans, those over 3000rpm need high speed ball bearings. By their nature these bearings are fitted a little on the loose side in the races. This can contribute to clicking when undervolted. It can make them extra skreechey at 12V because the bearings will sing. High speed sleeve bearing fans I would avoid because of increased noise as the fan ages.
The stock ADDAs out of my Lian Li were 80x25mm, drive 30cfm and worked for a year with no increase in noise. They were replaced with ADDA 80x25mm HyPro bearing fans driving 31cfm. These were a little quieter and are high end gear but expensive. Bought from Mouser.com @ $9 each. That's all I know about 80mm fans because now I will mod all 80 case fans to 92mm. The exception being the blow-hole if there is one will be left at 80mm. No sensor wire on either fan type.
Nidec 92x25 from BGMicro.com, $3, 12V@.29A. Starts/runs at <4V, starts with the noise at about 7.5V. Nice quality ball bearing fan w/sensor wire. I had one thrown in with a $30 order just to check it out. No application yet. I guess cfm at about 60+. It would be easy to look up with the part# at BGMicro.
Panaflo 92x25M-BX, from SVC.com, $4, 12V@.2A. Starts/runs at <5V. Pretty quiet up to 9V. At 12V drives 48cfm@30dBA. Since it has the BX at the end of its # it has a sensor/tach wire. Very nice 92x25 fan, most highly reccomeded if 48cfm is what you need. At $4....A steal. ( I say this with no warm feelings for Panaflo )
Papst 92x32, from Allelectronics.com, $3 iirc. Had one thrown in with an order awhile back. Papst is a resepected name but this bad-boy is a clicking beast at all voltages. It is a two wire fan,ie, no sensor wire. Sadly it's junk for me. It's fan could be cut out and the frame used for a spacer for a good fan. Absolute crap to be avoided.
Sanyo Denki 92x32,from sidewindercomputers.com, $5. 12V@.31A, 55cfm. It has three wires but no tach wire. Very nice fan, starts/runs at 4V, the noise comes on at 8.5V. This is the smoothest fan I have ever held at 12V, it is vibration free. No clicking when undervolted. If held 3" from my ear there is a click to be heard but lets get real
Good gear=Reccomended.
Delta Triple Blades from Sidewindercomputers.com=not cheap but very good fans. I have three in my current project. 92x25@40cfm, 92x38@57cfm,92x38@79cfm. All will reliably start/run @ 3.5V. All have sensor/tach wire. The sweetest of the lot is the 57cfm job. Not vibration free like the Sanyo Denki or NMB below but real close.
Most highly reccomended.
NMB 92x32 from Sidewinder, $5, 12V@.63A. This is a thermally controlled fan, at 80F it is silent. Max out-put is 69cfm. This is a Dell fan and through them costs $100+. The thermistor can be jumped and the fan put on a controller. I've bench tested it. It will start/run at <3.5V. Yeah, it's real noisy at 12V but is vibration free, just as good as the Sanyo Denki listed above. At 6 to 7V it's not silent but not bad either. The blades are very aggresive as it's made to suck ducted air off an Intel HS. I'm going to install a different thermistor on long leads and just play with the placement of the temp sensor.
Very good NMB fan. It would make for a crazy cfm HS fan. A steal at $5.
Reccomended for the OCer or deaf.
All the above is from hands on experiance. All testing was done with a Sunbeam Rheobus.
I have two Panaflo 120x38s a 86cfm and a 114cfm neither are near as sweet running as the Sanyo Denki 120x38@103cfm but this thread is about 80s and 90s. So no comment on those.
The Akasa fan line has just come into the Startes and maybe worth a look. They are not $5 fans.
I liked GamingPhreek's first post in this thread because it parallels things I have heard and read.
Sunday I ordered a nibbler from Jab-Tech.com and it hasn't arrived yet. Never used a hand nibbler but they are the ticket for opening 80mm fan ports to 92mm. I use a die grinder or hacksaw but they generate alot of metal dust, a nibbler doesn't. Cost? $8.
...Galvanized
wow, very nice, thanks galvanized
