On Sat, Nov 10, 2001 at 07:12:12PM -0500, Ian wrote: >Bill Campbell wrote: ... >> How long is a rope? > >Depends on where you cut it. ;) > >> Some racks that are commonly used in the telco industry use an odd size >> screw, number 12 if I remember correctly, that typically isn't available at >> the local hardware store. Last time I needed these, I got a bunch at >> Graybar. These are typically the aluminum standing post racks with pre- >> threaded holes. > >I am used to dealing with avionics racks with nicely documented standard >fastener and hole sizes, instead of just a hole. Just spoiled I guess.
The ones that just have a round hole are usually designed to use fasteners that have a captive nut and clip arrangement that slides onto the side rails (and up and down as you're trying to insert heavy equipment :-). The better computer racks have square holes with snap-in captive nuts, spaced for 1U minimum panels. >I've plenty of metal screws and taps, I'll just make 'em whatever size I >need. Yeah. I have a rack like that that I bought on the cheap with lots of tapped holes. It's a real PITA to use, and I just passed up a 20U rack on wheels at RE*PC today because it used the same mounting brackets. The telco rack rails with number 12 screws are OK because the screws are large enough, coarse thread, and have an unthreaded guide area at the end to make it fairly easy to get them started. The smaller machine screws can be a plain bitch to get started while trying to get a heavy chassis lined up properly. Bill -- INTERNET: [EMAIL PROTECTED] Bill Campbell; Celestial Software LLC UUCP: camco!bill PO Box 820; 6641 E. Mercer Way FAX: (206) 232-9186 Mercer Island, WA 98040-0820; (206) 236-1676 URL: http://www.celestial.com/ ``Things in our country run in spite of government. Not by aid of it!'' Will Rogers _______________________________________________ Linux-users mailing list Archives, Digests, etc at http://linux.nf/mailman/listinfo/linux-users
