[Soekris] cooling fans for net4801

[Jere Virta]

 Hello,

They are quite recent (depending on what recent means). They were bought
last summer from cortexsystems.net.

It came to my mind that I used 60mm fan in my another net4801, because 
the 80mm one did
quite not fit with harddisk, so if you use the hard disk, I'd go with 
60mm fan. Of course, 80mm
fits fine with hd if installed on top of the case.

I use fans pulling air out, but I think pushing in should work just fine.

My reason for choosing a larger fan for the unit in home was simply to 
minimize noise.

I took some pictures of my unit top cover with 80mm fan.

http://muumilaakso.fi/~jere/foo

The size of the hole is 75mm, and the vent holes at the other end are 10mm.

Unfortunately the another unit (with 60mm fan) is few hundred kilometers 
away, so I can't
get pictures or measures of that one, but I think I used 50mm hole for 
the fan.

I hope this was atleast a bit usefull information.



snowcrash+soekris kirjoitti:
> hi,
>
>> There's no actual fan-connector in 4801 (atleast not in my units),
>
> thanks much for confirming that.  are they 'recent' units?
>
> as the post was from Soren Kristensen, i'd have that that it would be
> authoritative.  i'm just trying to find out the current facts.
>
>> I have cut holes in the case for low-noise 80x80mm fan. I connected
>> the fan to GPIO +5V connector, and it works perfectly.
>
> "works perfectly" is always good to hear :-)
>
> if you might share ...
>
> what size (one hole? perforations? over existing vents?) did you choose?
>
> any particular reason for a single large(r) fan rather than two
> small(er) fans for flow-thru?
>
> do you have the fan pushing air in, or pulling air out?
>
> thanks again!
>