Nascom 2 cooling fan(s)??

From: Geoffrey Thomas <geoffreythomas_at_onetel.net.uk>
Date: Wed Jun 2 18:33:40 2004

I'll dig out my old Nascom 2 over the next few days and let you have a copy
of the manual-if you haven't got one.
I can't think exactly where it is at the moment - but I have been out on the
town .

Geoff. + +
              ^
            ~~~

----- Original Message -----
From: "Jules Richardson" <julesrichardsonuk_at_yahoo.co.uk>
To: "ClassicCmp" <cctalk_at_classiccmp.org>
Sent: Wednesday, June 02, 2004 7:45 PM
Subject: Nascom 2 cooling fan(s)??


>
> Calling on the wisdom of list members here...
>
> How warm does a) the PSU and b) the logic circuitry get in a Nascom 2?
>
> I'm currently in the process of dismantling the enormous wooden box
> which my acquired Nascom 2 came in and replacing it with a smaller old
> wooden box with a hinged lid.
>
> Boards (I have CPU board + memory) will be mounted vertically, likely at
> one end of the new box. Transformer + PSU will be at the opposite end.
>
> The machine as I got it had no fan in it, but then the horrible plywood
> crate was almost big enough to live inside :-) It just had some
> ventilation holes in the corner where the transformer was.
>
> I'm not sure whether I could really do with a fan blowing air over the
> PSU, or even two, with one on the PSU and one on the card stack. Or
> maybe passive cooling of PSU + cards is sufficient...
>
> Thoughts welcome. If I'm going to go the fan route I should really find
> period fans I suppose!
>
> Incidentally the new box is about 14" wide x 10" deep x 14" high, with a
> hinged lid, and large iron hinged handles at either end. All tounge and
> groove wooden construction, using particularly soft wood of unknown
> origin. In particularly ornate black script it reads "3" on the front
> and "51 to 79" and "15 x 12" on one side. I have no idea what it was
> used for, but put the age at probably around 1950 (possibly earlier). It
> may well be military, Post Office, or railways I imagine. Anyone?
>
> I'll reproduce the black lettering on the finished machine I think even
> though I have no idea what it means :-) The metal hinges and other
> fittings have been in a electrolysis bath for the last day and are
> looking particilarly nice. I'll keep the ports all round the back of the
> box, then if I can somehow build a slimline case for the keyboard then
> there'll be *just* enough room to stow the keyboard inside the box at
> the top and close the lid :)
>
> cheers
>
> Jules
Received on Wed Jun 02 2004 - 18:33:40 BST