Re: Tried oil on your Mac yet?

In article <no-9DF2BC.19062214022008@xxxxxxxxxxxxxxxxxxxxx>,
Andy <no@xxxxxxx> wrote:

In article <noemailhere-A80C63.17195513022008@xxxxxxxxxxxx>,
The New guy <noemailhere@xxxxxxxxxxx> wrote:

http://pugetsystems.com/submerged.php

Interesting, and quite cool. Have to say I nearly pissed myself
laughing when they turned the bubbles on.

Yeah...even geeks have a sense of humor.

Not sure why they kept the fans turning though.

Later they mentioned that it was just an experiment to see how long they
would run. They didn't make any difference to the temperatures.

The science majors here should be able to answer this: Heat rises in
air but does it rise in liquids the same way? I'm thinking yes when
reflecting on thermoclimes I've encountered when diving in the ocean.
But I wonder does heat rise in liquids (and do different liquids have
different heat rising parameters?) as rapidly as it rises in air? I was
wondering about hot spots in the mineral oil.

And I wonder how easy it is to clean off the mineral oil when you remove
a component? Must be kind of gooey.

Could be a good solution for my wind tunnel G4 MMD Powermac :-D

Is this it?
http://en.wikipedia.org/wiki/Image:GraphiteG4Interior.jpg

(5 volts is the red and black. 12 volts is the yellow and black.)

1. Reverse power supply fan (so it points inwards) and wire it so it
uses 5 volts, not 12. Then it will use exterior air and not need nearly
as much airflow and run much cooler. The fan, at 5 volts, will be
inaudible or just about. (95% quieter than at 12 volts.)

2. Disconnect large 4" fan in the tower that's mounted on the side. Or
wire it at 5 volts instead of the 12 volts its presently using. Remove
2" fan thats mounted on the side of the CPU heat sink. Use a 120mm fan
(wired at 5 volts) and place it on top of the CPU heat sink.

3. Crack the case open about an inch to let all heat escape.

4. Welcome to the cool, inaudible G4 tower. As long as you're not in a
high dust environment it will be great.

PS...Hopefully you don't use 2 hard drives crammed against each other.
An absurd notion. Follow the Mac Pro's design and mount the hard drive
upside down as most of the heat comes out of the bottom (the circuit
board side). It will cool better. If you want you could also sandwich
some very thin plastic or high density rubber grommets between the hard
drive and the hard drive mounting frame. Screw the hard drive tight.
Backup with a firewire external hard drive. Relatively quick and hot
swappable.
.

Relevant Pages

  • Re: Netbooks: Would you go for Linux over Windows?
    ... As the CPU and two ... until the fan comes on and cools it down. ... Heat as you know can ... Worse they don't pull the 5 volts from one of the external USB ports ...
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  • Re: imac overheating and fan noise.
    ... Its heat that's not escaping. ... The mini is such that you have to have it out in the open -- any ... should funnel cool outside air directly to the cpu fan then flush it out ... Run the fan off the black and red wires to give 7 volts as the ...
    (comp.sys.mac.system)
  • Re: Tried oil on your Mac yet?
    ... If you're not into noise, just say goodbye to small fans. ... supply fan at 5 volts is quiet enough so it doesn't need to be replaced. ... PS...Hopefully you don't use 2 hard drives crammed against each other. ...
    (comp.sys.mac.system)
  • Re: Fans and Hard Drives
    ... > If you have two hard drives it is better not to install them in adjacent ... > bays as they tend to heat each other up. ... Using a fan to cool the drives ...
    (microsoft.public.windowsxp.help_and_support)
  • Re: Fans and Hard Drives
    ... > If you have two hard drives it is better not to install them in adjacent ... > bays as they tend to heat each other up. ... Using a fan to cool the drives ...
    (microsoft.public.windowsxp.hardware)