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Date: Mon, 29 Oct 2001 12:46:14 +1000
From: Tony Bilbrough <mtbilbro at bigpond.net.au>
Organization: Bilbrough Consulting
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To: general at lists.humbug.org.au
Subject: [H-GEN] Re: 386 Router & PS fan
References: <002301c15f43$dd87da00$0a01a8c0 at p450> <3BDBE381.11FF5302 at bigpond.net.au> <20011029092737.A5578 at diskpig.org>
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[ Humbug *General* list - semi-serious discussions about Humbug and  ]
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G'day All,
I have followed all your advice where I can, and will experiment.
At this stage I have used a spare Power Supply and:

1. Cut 2 sides off it
2. Removed the fan
3. Attached an old unloved [but working] 40 Mb HDD, which lies atop the
remains of the PS box.
4. Punched 4 holes the diameter of a standard pencil in the front of a
cardboard box, down the bottom
5. Cut a hole up the top of the box, at the other end, the size of a
Peanut butter jar lid [opposite the PS]

Placed that lot inside a cardboard box, on top of a brick [to
approximate the height] in the 386. Box sealed with tape.

6. Attached a 2.4 w fan [12v].
This is placed about a metre away, outside of the box, as I just wanted
the PS to work a little harder.
- And also I can see at a glance if the sucker is still working, instead
of having to open the cardboard box up, etc.
7. Finally I have placed the whole lot on a small uninsulated storage
shed, with no air flow, and where the inside temperature has fluctuated
between 18 and 34 C over the last few days.
[The 386 router actually sits on the floor in a room at around 18- 22C]

I have powered it up thru a circuit breaker, removed flammable stuff
from near by!!!
- and shut the door.

I guess if it will run under those conditions for the next week, it
might be ok, eh?
Or should I have put a bit more load on it? say a second HDD?

I just do not know how to get the PS to simulate an o/s crash - if
indeed it would happen, on a box that is only a router [i.e. not server
as in RB's case]
Hardhat [the Router] is set up to restart automatically in case of a
power failure - a monthly event in my suburb, Corinda.

Thanks for all the ideas.
Tony B

David Jericho wrote:

snip....
> I've had plenty of systems over the years that have had failed
> power supply fans and still run, 
....snip

Frank Brand wrote :
Personally, I would be a bit wary, I would cut the grill off the PS and
try to angle the power supply upwards so the heat might get away a bit
better.
Snip...

Greg Black wrote
snip....
Despite the "success" of this unintended experiment, I don't
actually recommend it -- not without fairly careful measurements
and checks of specifications.
...snip

Robert Brockway wrote
snip.....
I believe the biggest contributors to heat in the case would be number
of hard drives and size of the case.  I doubt the cpu or ram would
generate as much heat as a running hard drive.
...snip

David Jerico wrote
snip....
When I put my hand by the vents on the side of the chassis, I can feel a
draft just caused by convection.
....snip



-- 
ô¿ô
+--------------------------------+---------------------------+
The box says "Requires Window$ 98 or better"
.......................So I installed Linux....
...ô¿ô Tony Bilbrough
int +61+7  local 3379 1048
cell 0414 337 918
+--------------------------------+---------------------------+

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