80x15 mm fans?

fetaost · Post by **fetaost** » Sat Sep 04, 2004 12:07 pm

Are there silent 80x15 mm fans? How do they compare to 80x25 fans? I'm thinking of replacing the psu fan and suspend the fan but there is no room unless I use a thinner one.

acaurora · Post by **acaurora** » Sat Sep 04, 2004 12:26 pm

Are you sure it uses a 15mm thick one? Most PSUs use 25mm thick. The only 80x15 ones I"ve seen was on a G4, it was embedded in the panel to suck air from the bottom of the side panel via vents.

fetaost · Post by **fetaost** » Sat Sep 04, 2004 12:34 pm

No, there is a 80x25mm fan inside the psu but if I want to suspend it I'll need a thinner because the space is really tight. I've seen 80x15 fans on some cpu-coolers.

acaurora · Post by **acaurora** » Sat Sep 04, 2004 12:41 pm

Why do you want to suspend it . . . ? Usually if you just used EAR grommets or fan isolators, that would do the trick. What PSU is it, and what fan are you putting in it ?

fetaost · Post by **fetaost** » Sat Sep 04, 2004 12:53 pm

Pardon my bad engrish.

I thought using EAR grommet was the same as "suspending" it. There's not even room for EAR grommets, the curciut board(?) is too close. It's a Q-Technology 300W.

acaurora · Post by **acaurora** » Sat Sep 04, 2004 12:56 pm

Then mount it from the outside. Push the EAR grommets inward from the outside in through the PSU housing and into the fan.

fetaost · Post by **fetaost** » Sat Sep 04, 2004 1:10 pm

That's a good idea. Unfortunately the case doesn't allow that without some modding. (The fan mounting holes aren't visible when the psu is in the case.)

acaurora · Post by **acaurora** » Sat Sep 04, 2004 1:15 pm

Does your case have a ledge for the PSU to rest on? If so, then just mount the fan using the EAR grommets onto the PSU casing, then put the PSU on that ledge, and screw it in as far as you can. By doing that, you have no only fan isolation, but PSU isolation as well, since the grommets would provide some isolation between the PSU/Case.

Otherwise... yah you're outta luck =[

fetaost · Post by **fetaost** » Sat Sep 04, 2004 1:28 pm

Yes, it has some kind of ledge. I'll try that tomorrow. Thanks for your good ideas.
But I'm still curious about those 80x15 mm fans.

bobov · Post by **bobov** » Sat Sep 04, 2004 5:19 pm

http://www.sidewindercomputers.com/sandenpetace.html

this fan is similar to panaflo 80mm L1A

flyingsherpa · Post by **flyingsherpa** » Sat Sep 04, 2004 5:53 pm

the zalman ZM-OP1 is very quiet at 5V, just not sure if it would move enough air for a psu. i guess it would at slightly higher voltages.

lenny · Post by **lenny** » Sat Sep 04, 2004 8:51 pm

I find this to be quieter than a ZM-OP1 (I have both). It's also cheaper, and you get that funky piece of metal that SVC calls copper. I'm no metallurgist, but I seriously doubt it's pure copper.

Main problem with this one is I'm not sure if quality is consistent.

Another alternative is to mod your PSU so that instead of having a 80mm blowing out, you have a 80mm on the opposite surface blowing in. If you go that route, make sure you seal all other holes where hot air might escape back into the PSU.

There is at least 1 mod (using a blower fan - Aero?) like that here in the forums.

burcakb · Post by **burcakb** » Sat Sep 04, 2004 11:47 pm

AFAIK, the Q-Tech 300W is a Fortron variant. Yes, sometimes it gets very crowded inside but not crowded enough that you can't swap the fan. It may look impossible but it really isn't.

Some of the better Fortron variants use rubber washers for mounting the fan. you might want to consider that too.

I seriously advise against a 80x15 as the main PSU fan. They'll either push too little air and cook your PSU or will run at high speed (I know the Zalman, for one, can push an impressive amount of air for its size) but will be orders of magnitude noisier.

fetaost · Post by **fetaost** » Sun Sep 05, 2004 12:37 am

So, thinner fans are much noisier?!
I've replaced the stock fan (adda) with an Arctic Cooling and a Zalman resistor. Much better than the original but still there's a humming sound in about 220 Hz.

Straker · Post by **Straker** » Sun Sep 05, 2004 12:56 pm

not inherently noisier, just much less pressure than thicker fans, which is bad in a PSU... so it'll have to spin much faster to get as much air through as a 25mm thick fan would

hmsrolst · Post by **hmsrolst** » Sun Mar 27, 2005 4:09 pm

lenny wrote:I find this to be quieter than a ZM-OP1 (I have both). It's also cheaper, and you get that funky piece of metal that SVC calls copper.

Bringing this back from the dead. I'm looking for a quiet 80x15mm fan, and this link just leads to the SVC website--probably they don't carry it anymore. If you could find the part for me, I'd appreciate it. Thanks.

m0002a · Post by **m0002a** » Sun Mar 27, 2005 4:38 pm

If you apply a thin layer of 100% silicone caulk between the fan and the flange, you will get the isolation you want and still have room for a 25mm thick fan. For best results, apply the silicone caulk and let it set up for about 30 minutes and then attach the fan. That allows the silicone to adapt the proper shape even if not applied perfectly even. 100% silicone caulk is sold in several different sizes for multiple uses (tub and bathroom, windows, etc) and comes in several colors including clear. The most common brand is GE.

This should allow you to use a 25mm thick fan, which provides better air movement than a thinner fan (if you can find one). In theory, a thicker fan is quieter because it needs less RPM to generate the same CFM output.

You can also use nylon bolts and nuts to attach the fan. This will provide additional isolation.

Both the 100% silicone and nylon bolts/nuts are available at any good hardware store (Home Depot, Lowe’s, Ace, etc). This is my standard fan mounting technique, including for case fans.

hmsrolst · Post by **hmsrolst** » Sun Mar 27, 2005 5:30 pm

My need for 80x15mm is not related to the original poster's. I have a low profile case, and there is no room for a 25mm fan on my XP-90.

m0002a · Post by **m0002a** » Sun Mar 27, 2005 6:10 pm

Is there room to put a fan on the side of the XP-90 instead of the top?

hmsrolst · Post by **hmsrolst** » Sun Mar 27, 2005 6:22 pm

Aleksi · Post by **Aleksi** » Sun Mar 27, 2005 7:33 pm

Hi,

If you're willing to order from europe, try http://www.dorothybradbury.co.uk. She doesn't have the 80x15mm Panaflos on her website anymore, but most likely she can get them if you need them.

Chang · Post by **Chang** » Mon Mar 28, 2005 1:29 pm

hmsrolst wrote:Bringing this back from the dead. I'm looking for a quiet 80x15mm fan, and this link just leads to the SVC website--probably they don't carry it anymore. If you could find the part for me, I'd appreciate it. Thanks.

After looking at this froogle search, I'm guessing that it was a hard drive cooler. If you want to buy an extra one and send it my way, I'd appreciate it.

hmsrolst · Post by **hmsrolst** » Mon Mar 28, 2005 5:37 pm

Thanks. Do you have any experience with it?

yeha · Post by **yeha** » Mon Mar 28, 2005 9:29 pm

well digikey has the panaflo 80x15 l1a for $10 - fba08t12l linkage.

or if $10 isn't enough to pay, these guys will gladly sell you a refurbished (yes, refurbished) fba08t12l for only $105!

Bluefront · Post by **Bluefront** » Mon Mar 28, 2005 11:36 pm

This is the model I use. I've got about five in use various ways.....none as a HD cooler. They are acceptably quiet for me, even at 12v. I attached two to the rear of my hot-running 23" LCD monitor, and at 12v I can live with them.....They will start at 5V FWIW.

StarfishChris · Post by **StarfishChris** » Tue Mar 29, 2005 3:35 am

yeha wrote:or if $10 isn't enough to pay, these guys will gladly sell you a refurbished (yes, refurbished) fba08t12l for only $105!

It's only $169 for a 3-year warranty, too - now you can sleep easy at night!

Bluefront wrote:...They will start at 5V FWIW.

I remember reading that the electronics inside the fan don't work at 5v, only 7 and above, but I don't know what difference they'd make if they did.

sthayashi · Post by **sthayashi** » Tue Mar 29, 2005 10:57 am

A bit of googling turned up this page:
http://www.atechfabrication.com/HTPC_accessories.htm
Scroll down to the 80mm x 15mm, made by Sanyo Denki. Interesting fan, isn't it? Looks a little familiar.

Cat Feet · Post by **Cat Feet** » Wed Mar 30, 2005 10:41 am

I have an 80mm x 15mm Evercool. Mine is extremely well balanced and starts reliably at 5v. It's very quiet for a ball bearing fan.

frankgehry · Post by **frankgehry** » Wed Mar 30, 2005 11:44 am

A sanyo denki

http://www.sidewindercomputers.com/sandenpetace.html

I see that this one has already been posted. Nevermind.

leem · Post by **leem** » Wed Mar 14, 2007 3:00 pm

I've been trying to get an 80x15mm fan in Australia, but Atech charges $40 for shipping, and the others don't ship over here and are not answering emails to make a special case. I'd really like the Sanyo Denki fan, and was going to buy Atech's thermal fan speed controller too.

Any advice on retailers over here, or someone who could ship here?

Thanks