Converting a 70mm Fan to a 80mm for a Heatsink?

[Orangey]

Hello,

How would I take my 70mm fan on my current heatsink, and make it so I can add a 80mm Panaflo. I have seen 60mm to 80mm Adapters but not anything from 70mm to 80mm... Please Help!

 

[Orangey]

Bump!

Help!

 

[Gene396]

Probably the reason you have not had responses is that there are no converters available. You could attempt to build one, but it would entail a lot of time and would have to invent some way to attach it.

All threads seem to agree that axial (type of fan we are using) are not good at creating pressure. That is what you do when you "funnel" 80mm into 70mm. So there would only be marginal results at best.

Going to a larger fan does two things: lower fan speed while moving more air with less noise. The best recomdation is to dig deep and purchase a new 80mm heatsink and fan. This is not what you are looking for. Sorry.

 

[mee987]

are you sure its 70mm?

 

[Zap]

mee987, there are a few companies making heatsinks using 70mm fans, for both socket A and socket 478. Thermaltake, Thermal Integration (Dr. Thermal), Arkua Technology, YS Tech (well, a 74x74mm fan), Vantec, maybe others.

How about using a blower? Even the loudest ones are quieter than the high-speed CPU fans, plus the quieter ones are almost silent. There was a heatsink that used two blowers... Silver Mountain or something... anyways, worth a look-see.

 

[Orangey]

Gene: That is what I was planning to do, just go ahead and buy a new heatsink with a 80mm fan. But I really like my current Thermal Integrations Heatsink Base, its a snap to clamp down onto the cpu. Theres no chance of broken lugs, etc.


Zap: Yeah, I dont have a blower, I have a Thermal Integrations VI-77L. Is there any quiet 70mm Fans I can Buy?

 

[jmorrell]

Don't know what you mean by quiet, but the Evercool 70 mm fan puts out 42 CFM at only 32 dba. I have one on my Evercool CUD-725 copper HSF. You can buy the fan separately at www.nexfan.com.

 

[Gene396]

The TI is a very impressive HF/F. Which model do you have? The TIV77L has a thin fan turning 3800 RPM @ 33db. The TIV77N is a standard size (25mm thick) turning 5000 RPM @ 42 db.

If sound level is the problem and you have the N model you could put a resistor in the 12 volt line to slow it down. The noise factor will drop dramaticly. Better still; put a reostat and tune it to your temp and noise liking. Afterware replace the reostat with a large wattage resistor. Try this, as it is the cheapest upgrade you can make!!

 

[Orangey]

Im Pretty sure i have the V77L the box just says V77 Series. One Quirk though, Sandra reports my fan running at 6250rpms! Is this something thats wrong with my mobo. I have a ePOX 87KA. The bios reports the same thing too. Wierd

 

[Gene396]

You didn't state what HS you had on your first posting. The information in last my last post was from NewEgg.com. I assumed that you were not getting the cooling you wanted. Since, your fan is turning such high speeds; maybe your problem is that of noise. If the thickness of the fan is 25mm, then slowing down the fan can cut the noise while still moving enough air to cool HS. If you have the 15mm fan this may not be as effective.

So try slowing down fan as instructed in my prior post. At least this method is not expensive!! It might be what you are looking for.

 

[trikster2]

Orangey

You got taken by newegg's and other's false advertising on the specs of the fan included with the TIV77L.

Perhaps this HSF is shipping with several different fans or something? I got (from newegg) a very loud TIV77L that drove me and my wife crazy.

Newegg lists the specs of the fan as 70x70x15mm, 3800 RPM

Then NEWEGG links to a review that clearly shows that the fan is a Y.S. Tech FD1270157B-1F

The YSTech FD1270157B-1F is rated at 5000RPM and 40dBa

Many sites list the fan as 33/34 dBA as Gene396 states. I, and my ears believe the manufacturers specs on the noise level that beast puts out (40dBa is twice as loud as a 34dBa if I remember my physics).

I tried the "7Volt Mod". It decreased the volume but the llow rumble was still very annoying.

What I finally did was just slap an 80mm panaflo L1A on the thing. I took a little bit of a hit in temps but the sound went WAY down.

Putting the panaflo on was easy once I got some tips from this forum.

I took an 80mm fan chrome grill and attached it to the TIV77L using the 60mm fan holes, some screws and some washers.

Then I attached the panaflo to the chrome grill. The fan hangs over the sides a little but less then you would think.

I am very interested in the 70mm fan mentioned by jmorrel It is currently on sale at nexfan for only $5

If you give that fan a try, let us know how it goes!

Wow nexfan just went up a notch in my book; they list the correct specs on the V77L:

Nexfan link for TI-V77L list 15mm fan as 42dBa 5000RPM