Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!beartrk!ceilidh!dnichols From: dnichols@ceilidh.beartrack.com (DoN Nichols) Newsgroups: comp.sys.3b1 Subject: Fans (was Re: 3B1 in the news(groups)) Message-ID: <1991Jun18.231203.3720@ceilidh.beartrack.com> Date: 18 Jun 91 23:12:03 GMT References: <3083@public.BTR.COM> <1991Jun18.032817.14348@texrex.uucp> Organization: D and D Data, Vienna, VA. Lines: 26 In article <1991Jun18.032817.14348@texrex.uucp> rmfowler@texrex.uucp (Rex Fowler) writes: [ ... ] >Having two fans; one blowing in, one blowing out? There has been discussion >in the past about fan usage and it seemed to me that the 'FARTASS' method >might be the best way to keep air moving through the computer. > >The only problem I see is that maybe the air blowing in exits through the >holes in the back(front)-plane before being sucked out by the other fan. All the better! If the incoming fan is filtered, and has a bit more airflow than the outbound fan, the extra lost through the holes will keep the dust-bunnies out. I haven't checked for the 3" fans, but the 5" fans (from Rotron, at least) were available in both the 7-watt version (whisper fan), and the 14-watt version (more noise, but more airflow). If there is a similar pair available, this sounds like the way to go. With the original 7300's fans, run the inbound one on the full 12VDC, while sending reduced power to the other. -- Donald Nichols (DoN.) | Voice (Days): (703) 664-1585 D&D Data | Voice (Eves): (703) 938-4564 Disclaimer: from here - None | Email: --- Black Holes are where God is dividing by zero ---