-----Oorspronkelijk bericht-----
From: Noel Chiappa
Sent: Saturday, November 07, 2015 2:50 PM
To: cctalk at
classiccmp.org
Cc: jnc at
mercury.lcs.mit.edu
Subject: PDP-11/45-55 CPU fan assemblies
Hi, all: I recently bought a PDP-11/45 [well, a /55,
to be technical;
the /45, /50 and /55 are completely identical except for
i) the memory options installed at purchase, and
ii) the printing on the front console :-], but alas, when I looked
closely, it is missing both upper and lower CPU fan assemblies.
(No doubt, removed to allow cannabilization of the fans, to keep
another machine running.)
(For those who aren't familiar, these are long
brackets to which a
number of the usual square fans are bolted; one is placed above,
and one below, the cards in the main pull-out rack of the CPU. The
one on top is hinged along the long edge, so it can be rolled back
out out of the way, for running cables to boards.)
To be more exact, the bottom is sort of an open box and has 4 fans.
The open side faces towards the card cage, the bottom (outside) has
3 rows of slits, size of the square fans.
The top part consist of *two* parts, one is a small box with the
downward side open. You would not want to stick your fingers there
when the fans run :-/ This side faced the card cage from the top.
The outer top has slits over the entire length. The width is the
width of the fans. With 5 "lips" another sheet of metal is hinged
onto the top fan box. When mounted on the BA11-F box, you can open
this sheet of metal and have access to the cables conduit.
So, does anyone i) have a spare set they don't
want (I know, I know,
I know, p < .00001, but maybe a miracle will happen);
That makes me the "miracle worker" :-)
Sending an email off-line.
- Henk
Thanks (hopefully :-)!
Noel