how thick should shroud be?

Ruiner · 05-21-2003, 02:47 PM

It's for a panaflo m1a on a heatercore. My shroud is built into my case, and I'm guessing the fan is only 1/2" from the heater core the way I have it rigged. It's pretty noisy, even rheo-volted down to 9v, and the airflow isn't great.
Would it be worth the case hack work to increase to 1"?

JSimmons · 05-21-2003, 03:09 PM

I don't understand why it's noisy. Is it a rattling noise, or is it the fan? If nothing else, try just replacing the fan.

Truly, only you can determine if it's worth the case mod. However, if you post pics of your current setup, we can suggest alternatives or possible case mods to allow a deeper shroud.

pHaestus · 05-21-2003, 04:08 PM

Panaflo M1As aren't quiet by any stretch of the imagination. Try unbolting the fan and suspend it in the case while it's running. If the noise is about the same, then that's just how loud the fan is. If the noise is due to rattles and vibration though then it will be a lot quieter. I use 1.5 to 2" for all my shrouds; less and you put a pretty serious restriction on the fan's intake side (for fans pulling air through the heatercore).

mad mikee · 05-21-2003, 04:48 PM

You can build a new one from sheet aluminum in an afternoon, a day at most. That will support anything short of a metal fan. I always use a draw flow for mine so I don't know how much improvement happens w a blowing system, but not real noisy. (Looks over at box and sees temp of 79.3 F for CPU)

redleader · 05-21-2003, 05:04 PM

There was a thread about this on Overclockers Austriala IIRC. Basically up to 6 inches thick or so is ideal, but an inch or two is pretty good for practical reasons.

MadDogMe · 05-22-2003, 02:21 AM

To gain another 1/2inch it'd be wasteful IMO, unless it'd be a very quick, easy mod. Just run the fan at +5volt, or +7volt (use the +5v as an 'earth' for the fan while running off of the +12volt rail). It's better to have the fan sucking IMO when used on a rad...

pHaestus · 05-22-2003, 11:20 AM

DO read this article:

http://www.nmbtc.com/pdf/forum/engineering_101.pdf

Page3 has the relevant info to this particular discussion, but the whole paper is useful.

Ruiner · 05-22-2003, 08:13 PM

Excellent article. I did a little impromtu modding and got the fan almost 2" from the rad. Quieter, better airflow and cooler water.

JSimmons · 05-23-2003, 06:21 AM

My over-engineered radiator duct will have the pusher fan 1 inch away, and the puller fan 2 inches away.

JokerCPoC · 06-12-2003, 10:08 PM

Good New: Danger Den has some pre-made shrouds for sale.
Bad News: The Shrouds are for 120mm fans and They are only 3/4" thick.

I may have to buy 3 to get out to 2.25" thick.

Order Shroud Separately $13.95 each

05-21-2003, 02:47 PM	#1
Ruiner Cooling Savant Join Date: May 2003 Location: New Smyrna, FL Posts: 258	how thick should shroud be? It's for a panaflo m1a on a heatercore. My shroud is built into my case, and I'm guessing the fan is only 1/2" from the heater core the way I have it rigged. It's pretty noisy, even rheo-volted down to 9v, and the airflow isn't great. Would it be worth the case hack work to increase to 1"?

05-21-2003, 03:09 PM	#2
JSimmons Cooling Savant Join Date: Apr 2003 Location: 4-sided room with an exit going east, and an exit going south Posts: 392	I don't understand why it's noisy. Is it a rattling noise, or is it the fan? If nothing else, try just replacing the fan. Truly, only you can determine if it's worth the case mod. However, if you post pics of your current setup, we can suggest alternatives or possible case mods to allow a deeper shroud. __________________ My Watercooling Stuff

05-21-2003, 04:48 PM	#4
mad mikee Cooling Savant Join Date: Oct 2001 Location: US of A!!!! Posts: 146	All my shrouds are 1.5" deep You can build a new one from sheet aluminum in an afternoon, a day at most. That will support anything short of a metal fan. I always use a draw flow for mine so I don't know how much improvement happens w a blowing system, but not real noisy. (Looks over at box and sees temp of 79.3 F for CPU) __________________ His PCV2000 DFI ULTRA D (SLI Modded just because) 4200 x2 @ ~ 10 x 260 /1.49 Vcore , G5 + PA160 + 150mm Papst@5V + Maze 4 GPU + mcp350. Temp 36-37(load-2 x D20L) 2x1GB Ballistix PC4000, x800xl 256m, 74G rap + 160G Hitachi SATA , 21" mit/nec 1920x1440 Crt + 19 Neovo F-419 1280x1024 LCD, OCZ Powerstream 600 Hers: (my beloved who lets me do all this) LianLi PCV1000, SD3700 @ 9x300, 1GB GBLA, 250+ 120 SATA, X700pro, 19" Neovo F-419 LCD, another OCZ 600

05-23-2003, 06:21 AM	#9
JSimmons Cooling Savant Join Date: Apr 2003 Location: 4-sided room with an exit going east, and an exit going south Posts: 392	My over-engineered radiator duct will have the pusher fan 1 inch away, and the puller fan 2 inches away. __________________ My Watercooling Stuff

06-12-2003, 10:08 PM	#10
JokerCPoC Cooling Savant Join Date: Sep 2002 Location: Hesperia, CA Posts: 130	Good New: Danger Den has some pre-made shrouds for sale. Bad News: The Shrouds are for 120mm fans and They are only 3/4" thick. I may have to buy 3 to get out to 2.25" thick. Order Shroud Separately $13.95 each __________________ My Blog Joker1: 2-265 @ 2.25GHz cpus(OSA265FAA6CB)[H8DCE] soon Joker2: 1-165 @ 2.65GHz cpu[Bios/Clockgen405], MS-6702E v1.0(9.3 Bios) Joker3: 1-270 @ 2.40(2nd-270 cpu soon)GHz cpu[Ntune], K8N-DL v1.03(1007 Bios) Joker4: 2-285 @ 3.25? GHz cpu[Ntune], (soon) K8N-DL v1.03(1007 Bios) Joker5: 2-285 @ 3.25? GHz cpu[Ntune], (soon) K8N-DL v1.03(1007 Bios) (10.10GHz now, 25.43GHz maybe? Crunchin 4 SetiBoinc for the PC Perspective Killer Frogs)

05-21-2003, 04:08 PM	#3
pHaestus Big Player Making Big Money Join Date: Aug 2001 Location: irc.lostgeek.com #procooling.com Posts: 4,782	Panaflo M1As aren't quiet by any stretch of the imagination. Try unbolting the fan and suspend it in the case while it's running. If the noise is about the same, then that's just how loud the fan is. If the noise is due to rattles and vibration though then it will be a lot quieter. I use 1.5 to 2" for all my shrouds; less and you put a pretty serious restriction on the fan's intake side (for fans pulling air through the heatercore).

05-21-2003, 05:04 PM	#5
redleader Thermophile Join Date: Jun 2001 Location: The deserts of Tucson, Az Posts: 1,264	There was a thread about this on Overclockers Austriala IIRC. Basically up to 6 inches thick or so is ideal, but an inch or two is pretty good for practical reasons.

05-22-2003, 02:21 AM	#6
MadDogMe Thermophile Join Date: Aug 2002 Location: Just shut up ;) ... Posts: 1,068	To gain another 1/2inch it'd be wasteful IMO, unless it'd be a very quick, easy mod. Just run the fan at +5volt, or +7volt (use the +5v as an 'earth' for the fan while running off of the +12volt rail). It's better to have the fan sucking IMO when used on a rad...

05-22-2003, 11:20 AM	#7
pHaestus Big Player Making Big Money Join Date: Aug 2001 Location: irc.lostgeek.com #procooling.com Posts: 4,782	DO read this article: http://www.nmbtc.com/pdf/forum/engineering_101.pdf Page3 has the relevant info to this particular discussion, but the whole paper is useful.

05-22-2003, 08:13 PM	#8
Ruiner Cooling Savant Join Date: May 2003 Location: New Smyrna, FL Posts: 258	Excellent article. I did a little impromtu modding and got the fan almost 2" from the rad. Quieter, better airflow and cooler water.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)