How to quiet a Delta 120mm Fan??

Acroam · 07-28-2002, 02:14 PM

I was just wondering about how to mod a Delta 120mm fan so that its quiet? Its WAAYY too loud!!
Im not sure of how to do it, can you pros give me the right way of modding one? what i will need and how to install it? thanks alot!

Acroam · 07-28-2002, 04:02 PM

thanks to the procooling site, i read about cutting down the voltage, the delta is really quiet now!! Thanks ProCooling!!

Brad · 07-29-2002, 04:47 AM

2000 grit sand paper on the blades helps too

nemaste · 08-16-2002, 09:16 AM

interesting idea brad. have you tried it before? i was thinking not only could you reduce turbulence on the top of the blades, but you could also remove the material in a way that better balances the rotor. precise balancing is very important. balancing not only reduces noise & vibration, but it also quiets the origin of turbulence (pressure perturbations at specific frequencies). i haven't taken apart my Deltas to see how well the factory balances them, but i'm sure improvements are possible. even if you couldn't remove enough plastic to balance it, maybe adding weight is possible (like balancing the wheels on a car).

peregrine · 10-27-2002, 11:45 PM

I'm wondering why you bought a delta when you want a quiet fan.

Brad · 10-28-2002, 01:52 AM

I've done it a couple of times - it really does help quite a bit.

quokked · 11-12-2002, 08:07 AM

you could also isolate the fan from transferring its vibrations to the case, by using rubber fan plugs or sticking the fan onto where u're mounting it with something like RTV silicon adhesive (done this on my AX-7 with panaflow works a charm)

jtroutma · 11-12-2002, 04:36 PM

I can vouch for Brad on this one too. I recently sanded down my Sunon 120mm fan with 600 then 1500 grit sandpaper and I personally believe that it dropped the noise level from 42db to about 38-39db (NOT scientifically proven).

Sanding does make a difference! Now I hear my HDDs more than my 120mm fan

trifler · 12-23-2002, 01:53 AM

Could someone show with some pictures what you actually mean by gritting the blades?
My english ain't that good so i don't really understand..

Brad · 12-24-2002, 11:55 PM

use sandpaper to smooth out the blades. Does anyone else speak swedish here?

Kevin · 12-26-2002, 04:14 AM

hehe a quiet delta...

07-28-2002, 02:14 PM	#1
Acroam Cooling Neophyte Join Date: Jul 2002 Location: Somewhere Posts: 85	How to quiet a Delta 120mm Fan?? I was just wondering about how to mod a Delta 120mm fan so that its quiet? Its WAAYY too loud!! Im not sure of how to do it, can you pros give me the right way of modding one? what i will need and how to install it? thanks alot!

07-29-2002, 04:47 AM	#3
Brad Thermophile Join Date: Oct 2001 Location: Nuu Zeeelin Posts: 3,175	2000 grit sand paper on the blades helps too __________________ 2x P3 1100's at 1400, Abit VP6, 2x Corsair 256mb PC150 sticks, 20gb 'cuda ATA-III, 2x 40gb 'cuda ATA-IV in raid 0. 20" Trinitron. No fans 2x 2400+ at 2288mhz (16.0 x 143), Iwill MPX2, 2x Kingmax PC-3200 256mb sticks, 4x 20gb 60gxp in Raid 5 on a Promise SX6000. Asus Ti4200 320/630. Cooled by Water

08-16-2002, 09:16 AM	#4
nemaste Cooling Neophyte Join Date: May 2002 Location: CA Posts: 78	interesting idea brad. have you tried it before? i was thinking not only could you reduce turbulence on the top of the blades, but you could also remove the material in a way that better balances the rotor. precise balancing is very important. balancing not only reduces noise & vibration, but it also quiets the origin of turbulence (pressure perturbations at specific frequencies). i haven't taken apart my Deltas to see how well the factory balances them, but i'm sure improvements are possible. even if you couldn't remove enough plastic to balance it, maybe adding weight is possible (like balancing the wheels on a car). __________________ StrongShockModz

10-27-2002, 11:45 PM	#5
peregrine Cooling Neophyte Join Date: Oct 2002 Location: Australia Posts: 15	I'm wondering why you bought a delta when you want a quiet fan. __________________ AthlonXP 1900+ @ 1.75Ghz; 1.85V - Alpha PAL 8045 w. 50cfm Sunon AOpen AK77-8x Max Leadtek Winfast GF3 ti-200

10-28-2002, 01:52 AM	#6
Brad Thermophile Join Date: Oct 2001 Location: Nuu Zeeelin Posts: 3,175	I've done it a couple of times - it really does help quite a bit. __________________ 2x P3 1100's at 1400, Abit VP6, 2x Corsair 256mb PC150 sticks, 20gb 'cuda ATA-III, 2x 40gb 'cuda ATA-IV in raid 0. 20" Trinitron. No fans 2x 2400+ at 2288mhz (16.0 x 143), Iwill MPX2, 2x Kingmax PC-3200 256mb sticks, 4x 20gb 60gxp in Raid 5 on a Promise SX6000. Asus Ti4200 320/630. Cooled by Water

07-28-2002, 04:02 PM	#2
Acroam Cooling Neophyte Join Date: Jul 2002 Location: Somewhere Posts: 85	thanks to the procooling site, i read about cutting down the voltage, the delta is really quiet now!! Thanks ProCooling!!

11-12-2002, 08:07 AM	#7
quokked Cooling Neophyte Join Date: Jun 2002 Location: Melbourne Australia Posts: 3	you could also isolate the fan from transferring its vibrations to the case, by using rubber fan plugs or sticking the fan onto where u're mounting it with something like RTV silicon adhesive (done this on my AX-7 with panaflow works a charm) __________________ Nothing is impossible: Somethings are not worth the effort to achieve

11-12-2002, 04:36 PM	#8
jtroutma Cooling Savant Join Date: Aug 2001 Location: SLO, CA Posts: 837	I can vouch for Brad on this one too. I recently sanded down my Sunon 120mm fan with 600 then 1500 grit sandpaper and I personally believe that it dropped the noise level from 42db to about 38-39db (NOT scientifically proven). Sanding does make a difference! Now I hear my HDDs more than my 120mm fan __________________ Athlon64 X2 4200+ @ 2.5Ghz (250FSB x 10) OCZ VX 1GB 4000 @ 250FSB (6-2-2-2 timmings) DFI LANParty nForce4 Ultra-D SCSI Raid 5 x (3) Cheetah 15K HDDs LSI Express 500 (128MB cache) OCZ PowerStream 520W PSU ATI X850XT PE (Stock) DTEK WhiteWater + DTEK Custom Radiator Eheim 1250

12-23-2002, 01:53 AM	#9
trifler Cooling Neophyte Join Date: Dec 2002 Location: Älmhult, Sweden Posts: 27	Could someone show with some pictures what you actually mean by gritting the blades? My english ain't that good so i don't really understand.. __________________ Dator: Drevad för att klara branta backar. §)__\,__\|

12-24-2002, 11:55 PM	#10
Brad Thermophile Join Date: Oct 2001 Location: Nuu Zeeelin Posts: 3,175	use sandpaper to smooth out the blades. Does anyone else speak swedish here? __________________ 2x P3 1100's at 1400, Abit VP6, 2x Corsair 256mb PC150 sticks, 20gb 'cuda ATA-III, 2x 40gb 'cuda ATA-IV in raid 0. 20" Trinitron. No fans 2x 2400+ at 2288mhz (16.0 x 143), Iwill MPX2, 2x Kingmax PC-3200 256mb sticks, 4x 20gb 60gxp in Raid 5 on a Promise SX6000. Asus Ti4200 320/630. Cooled by Water

12-26-2002, 04:14 AM	#11
Kevin Slacking more than your weird uncle Join Date: Nov 2000 Location: San Diego, CA (UCSD) / Los Angeles, CA (home) Posts: 1,605	hehe a quiet delta... __________________ I used to throw hot coffee all over the ass of the horse there, then whip him while he was kickin' at me. Those f***in things are crazy.

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