Return-Path: Received: from smtp03.mrf.mail.rcn.net ([207.172.4.62]) by ns1.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-64832U3500L350S0V35) with ESMTP id com for ; Fri, 22 Sep 2000 08:12:52 -0400 Received: from 216-164-234-135.s135.tnt2.frd.va.dialup.rcn.com ([216.164.234.135] helo=oemcomputer) by smtp03.mrf.mail.rcn.net with smtp (Exim 3.15 #2) id 13cRnw-0001Od-00 for lancair.list@olsusa.com; Fri, 22 Sep 2000 08:19:48 -0400 Message-ID: <000e01c0248f$b00f7460$87eaa4d8@oemcomputer> From: "Bill & Sue" To: References: <20000922042413.AAA25010@ns1.olsusa.com> Subject: Vacuum Pump Life Date: Fri, 22 Sep 2000 08:21:49 -0400 X-Mailing-List: lancair.list@olsusa.com Reply-To: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> > << Do vacuum pumps last 1000 hours? Vacuum pumps fail. I know this from reading about them here on the list. Although my experience with them may not be sufficient to draw any meaningful conclusion, maybe I'm just lucky, here's my story. In about 6,000 hours as a CFI and many years as a flight school owner, I've never had a pump failure in an airplane I was flying or in one of my school's airplanes. All of these were typical trainers, tied down outside and beat up bad. I have, however, had a lot of alternator failures. Too small a sampling to be statistically meaningful but I went with a pump instead of all electric. I did put in the Precise Flight standby vacuum system as well as two batteries and two separate busses. Don't know if this helps but I just thought that I'd pass along what my experience with vacuum pumps has been. Bill Harrelson harrelson@erols.com >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://www.olsusa.com/Users/Mkaye/maillist.html LML Builders' Bookstore: http://www.buildersbooks.com/lancair Please send your photos and drawings to marvkaye@olsusa.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>