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Looking for some advice on redesigned pump setup for noise reduction.

post #1 of 15
Thread Starter 
I currently have the Koolance 1U res below:

http://www.frozencpu.com/products/16426/ex-res-375/Koolance_RP-401X2_Single_525_Reservoir_w_PWM_Pumps_Installed_Rev_11.html?id=zsgyLsWc&mv_pc=164

The only thing I can hear when my system is running is a slight hum from the MCP35X mounted in the res. I'm sure it's the pumps because I can vary the RPM with software and the noise changes in pitch with the changes in RPM.

I'm thinking about pulling the pumps and installing them in the swiftech dual or EK pump top for dual pumps then using an internal res like this one.

http://www.frozencpu.com/products/17509/ex-res-432/EK-MultiOption_RES_X3_250_-_Liquid_Cooling_Reservoir_6_Total_Ports.html?id=zsgyLsWc&mv_pc=366

The goal of the rebuild other than to see what I can do with an NZXT 630 will be to get rid of that humming from the pumps as much as I can. I have thought about mounting the res directly to the pump top using something like this:

http://www.frozencpu.com/products/15532/ex-tub-1229/XSPC_G14_Male_to_Male_Extender_-_5mm_-_Chrome.html?id=zsgyLsWc&mv_pc=365

But I'm concerned that the vibration will be transferred to the tube res and cause resonance.

Anyone have experience/suggestions on mounting a dual MCP35X (PWM of course) to reduce the noise when running? Any input would be appreciated.

Thanks in advance. biggrin.gif
post #2 of 15
triple post.. wierd
    
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post #3 of 15
Bah.. weird things are happening here.

Anyway, I had a 35x connected to a tube res and a radiator using fittings only. It was very noisy..
Rebuilding my loop now with the pump isolated, I can tell you if it helps in a few days when I get my replacement radiator.
Edited by JoeTesla - 2/4/13 at 8:22am
    
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CoolingCoolingCoolingCooling
Alphacool ut60 360 radiator Swiftech MCP-35x pump Noiseblocker NB-Eloop PWM 800-2000 x3 Corsair SP120 x3 
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post #4 of 15
Hang the pump from your tubing with a good bit between the pump in/out and the next connection. If the pump is not mounted, it will not transfer the vibrations except for a tiny bit that is not absorbed by the tubing.
post #5 of 15
Are you sure you have the duty cycle setup correctly? I have many 35x pumps and they are silent until provoked in anger. Also bay mounted pumps make more noise.
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post #6 of 15
Thread Starter 
Quote:
Originally Posted by tsm106 View Post

Are you sure you have the duty cycle setup correctly? I have many 35x pumps and they are silent until provoked in anger. Also bay mounted pumps make more noise.

Yes, I have the duty cycle set at 35% on both pumps. When I was running the system on my bench, the pumps made no noise at all. I belive the source is the drive cage of the Switch 810.
Edited by pgdeaner - 2/4/13 at 2:55pm
post #7 of 15
Thread Starter 
I guess what I am after here is clever ideas on mounting the pumps so that they will be quiet. I have read several build logs where pumps are suspended by the tubing but the idea makes me nervous. I'd rather have some sort of solid mount even if it involved silicone adhesive. Any ideas are welcome.

biggrin.gif
post #8 of 15
Quote:
Originally Posted by pgdeaner View Post

I guess what I am after here is clever ideas on mounting the pumps so that they will be quiet. I have read several build logs where pumps are suspended by the tubing but the idea makes me nervous. I'd rather have some sort of solid mount even if it involved silicone adhesive. Any ideas are welcome.

biggrin.gif


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post #9 of 15
Quote:
idea makes me nervous
Barb + Clamp = Not going anywhere (http://www.sidewindercomputers.com/hoseclamps.html)

I'm going to use the steel worm clamps to make sure it's dead tight and will never come loose.
post #10 of 15
^^Oh oh. Pump is suspended by just the tube on the left. I also reset the sink so it radiates vertically. wink.gif

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