[rescue] Apple Emac is Shit

[Bill Bradford]

On Mon, Aug 12, 2002 at 07:24:56AM -0700, Fogg, James wrote:
> The thermo sensor is near the top of the box, so blowing downward provides
> air to the sensor that hasn't been heated by the internals yet. Having a
> sensor near the top of a convection cooled enclosure makes sense as that
> would be the hottest place.

Actually, the thermo sensor is the CPU itself.

> Never having seen the inside of a cube I wouldn't know, but you might find
> there are airflow issues when blowing down. Its possible that Apple provided
> venturi shapes/etc. to assist convection flow.

Nope, its just a straight airflow path through the widely-spaced fins of
the CPU board heatsink.  

I think one reason it works better is that the bottom of the cube is more a
"mesh" of small holes, while the top has big "vents".  Less airflow resistance
when coming from the top.

> Of course I'm making massive assumptions here based on good design ideas.

There's actually a bracket for putting a fan *inside* the Cube - 
see http://www.praxxus.com/cubefan/ for pictures.  Apple just never
shipped it with a fan.

Bill 

-- 
bill bradford
mrbill at mrbill.net
austin, texas