[rescue] WAY OT: sliding rails - centermount

[rescue at sunhelp.org]

Got it. Sounds like its time for a 4 post rack.

James Fogg, Network Engineer
Vicinity Corporation - New Hampshire
(603) 442-1751

~ -----Original Message-----
~ From: woods at weird.com [mailto:woods at weird.com]
~ Sent: Friday, January 11, 2002 2:06 PM
~ To: rescue at sunhelp.org
~ Subject: RE: [rescue] WAY OT: sliding rails - centermount
~ 
~ 
~ The only way to mount sliding rails on a relay rack is to use 
~ a pair of
~ hunk-o-steel/alum. plates with angle-iron rail ears firmly 
~ fixed to them.
~ 
~                           ____
~                        __/ |  \__
~                     __/    |     \__
~                   _/       |        \_
~                  |         |          |
~    ==================================================
~                  |_        |         _|
~                    \__     |      __/
~                       \__  |   __/
~                          \_|__/
~ 
~ 
~ Smooth out the wiggles, adjust and re-shape to the size of the chassis
~ and for the weight you have to carry (good mech-eng. and/or 
~ metalworking
~ references can give the sheer strength of the plate and angle iron so
~ you can figure out how many screws you need on the rails, etc.)
~ 
~ The vertical bar is the angle iron (sticking out of the screen...  :-)
~ The row of equal signs is the rail, and it'll be screwed to 
~ the plate on
~ the opposite side of the angle iron..
~ 
~ You have to keep this whole rig quite thin too -- relay racks 
~ sometimes
~ have less clearance between the rails than ordinary cabinet rails do
~ (even though the mounting hole centers are the same distance appart).
~ Mounting the angle iron in such a way so that it doesn't go inside the
~ rails helps.
~ 
~ It'd be much better to just find/make a pair of correct-sized 
~ ears to be
~ center-mounted on the chassis and then bolt the thing directly to the
~ rack rails.  They might even look like above, but without the rail.
~ 
~ Depending on where you've got safe places to put screw holes in the
~ chassis, and where the center of balance is, you're still 
~ maybe going to
~ end upneeding a pair of pieces of steel plate and some angle 
~ iron bits.
~ 
~ -- 
~ 								
~ Greg A. Woods
~ 
~ +1 416 218-0098;  <gwoods at acm.org>;  <g.a.woods at ieee.org>;  
~ <woods at robohack.ca>
~ Planix, Inc. <woods at planix.com>; VE3TCP; Secrets of the Weird 
~ <woods at weird.com>
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