wtm@neoucom.UUCP (Bill Mayhew) (05/13/89)
1. My 3b1, impulse, loses her brains when the keyboard is unplugged. No amount of typing, furious or otherwise will restore sanity until the black button is pressed. I do run the keyswap installable driver to swap the ctrl and the capslock keys, though I doubt that matters. 2. My Newark book doesn't have dBA figures for MBI Technologies Boxer HiFi fans. Here are some that you might want to consider from other manufacturers: Comair Rotron Sprint ST12A3 12V 34 CFM 33 dBA 3.15 * 1.26 inches Pamotor Series 8100 8112G 12V 35 CFM 40 dBA 3.13 * 1.5 inches Pamotor Series 8500 8500DP 115VAC 36 CFM 39 dBA 3.13 * 1.5 inches I don't know how much clearance there is in between the grille and the back of the power supply. I didn't consider any fans more than 1.5 inches thick. I can give an endorsement to Panasonic Industrial Co. fans. There is a Panaflo 12 volt fan in this AT where I am typing this article. This machine has been switched on continuously since April 21, 1986*. DC fans are not intrinsically unreliable. The Panaflo fan is very quiet; probably around 30 dBA. The air vent in the room is louder than the the fan. The fans that are in the Unix PCs seem to be of unknown origin; there is no manufacturer's label on the fan that came in my 3b1 .. the original fan also looked poorly constructed. The miniscribe disk drive in my 3b1 makes a lot more noise than the fan anyway. This AT also has a Rodime 45 megabyte 3.5 disk with an access time of 25 mS. The Rodime drive is quiet enough that it is difficult to tell if it is running or not. The Rodime has been running for a little over a year now and has stayed quiet. *except for several short interruptions for vaccuming out the machine and adding an extra network connection board and Rodime drive to replace the orignial 20 meg unit. Bill Bill wtm@impulse.UUCP
marsella@athos.rutgers.edu (Stacy Marsella) (05/14/89)
wtm@neocom.UUCP (Bill Mayhew) writes > The fans that are in the Unix PCs seem to be of unknown origin; > there is no manufacturer's label on the fan that came in my 3b1. On the 3b1 and 7300 fans that I have seen, the manufacturer's label is on the hub of the fan - it is covered by a circular piece of tape. (?)
lenny@icus.islp.ny.us (Lenny Tropiano) (05/16/89)
In article <May.14.09.55.59.1989.17202@athos.rutgers.edu> marsella@athos.rutgers.edu (Stacy Marsella) writes: |>wtm@neocom.UUCP (Bill Mayhew) writes |> |>> The fans that are in the Unix PCs seem to be of unknown origin; |>> there is no manufacturer's label on the fan that came in my 3b1. |> |>On the 3b1 and 7300 fans that I have seen, the manufacturer's label is |>on the hub of the fan - it is covered by a circular piece of tape. (?) The 12VDC fans in the AT&T UNIX pc are made by EG&G Rotron, model ST12G6, 12VDC, .12A, 1.4W (made in the USA) -Lenny -- Lenny Tropiano ICUS Software Systems [w] +1 (516) 582-5525 lenny@icus.islp.ny.us Telex; 154232428 ICUS [h] +1 (516) 968-8576 {talcott,decuac,boulder,hombre,pacbell,sbcs}!icus!lenny attmail!icus!lenny ICUS Software Systems -- PO Box 1; Islip Terrace, NY 11752
psfales@ihlpb.ATT.COM (Peter Fales) (05/16/89)
In article <May.14.09.55.59.1989.17202@athos.rutgers.edu>, marsella@athos.rutgers.edu (Stacy Marsella) writes: > wtm@neocom.UUCP (Bill Mayhew) writes > > > The fans that are in the Unix PCs seem to be of unknown origin; > > there is no manufacturer's label on the fan that came in my 3b1. > > On the 3b1 and 7300 fans that I have seen, the manufacturer's label is > on the hub of the fan - it is covered by a circular piece of tape. (?) For what it is worth: Since my fan was handy (recently remove from the machine), I peeled of the tape. There was no manufacturer's label there or anywhere else. -- Peter Fales AT&T, Room 5B-414 2000 N. Naperville Rd. UUCP: ...att!ihlpb!psfales Naperville, IL 60566 Domain: psfales@ihlpb.att.com work: (312) 979-8031