Return-Path: Received: from mta2.snfc21.pbi.net ([206.13.28.123]) by ns1.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-64832U3500L350S0V35) with ESMTP id com for ; Tue, 30 May 2000 03:02:56 -0400 Received: from coy0te ([209.233.0.19]) by mta2.snfc21.pbi.net (Sun Internet Mail Server sims.3.5.2000.01.05.12.18.p9) with SMTP id <0FVD00ABZ2IJEK@mta2.snfc21.pbi.net> for lancair.list@olsusa.com; Tue, 30 May 2000 00:08:54 -0700 (PDT) Date: Tue, 30 May 2000 00:10:14 -0700 From: "Walter P. Dodson" Subject: Chipping micro and vacuum pump heat To: LancairList Reply-to: "Walter P. Dodson" Message-id: <000b01bfca06$4d983b20$dc96fea9@coy0te> X-Mailing-List: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> I feel that anything that can present a harder surface to the impact of gravel will help. A coat of epoxy may be good at preventing "dings" in micro. Of course, this is only a feeling having no test background. Thinning the epoxy with acetone may even help saturation of the micro. Difinitive testing needs to be done. Regarding vacuum air pumps; buy the best available pump for your engine. Treat it right with filters changed regularly. Make sure to avoid contamination during maintenance. Any blast cooling over the fins will extend pump life. (Why do they put fins on the pump case?). Change the pump for a NEW one at pump TBO. Install a back-up vacuum source. With this type preventitave maintenance you may never have it turn on. Walter Dodson, IV-P w/ back-up vacuum source >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 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. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>