Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!linus!wivax!decvax!microsof!fluke!pwv From: pwv@fluke.UUCP Newsgroups: net.rec.photo Subject: Re: Leaving the shutter cocked Message-ID: <341@vax1.UUCP> Date: Fri, 24-Jun-83 09:28:11 EDT Article-I.D.: vax1.341 Posted: Fri Jun 24 09:28:11 1983 Date-Received: Sun, 26-Jun-83 07:20:10 EDT Lines: 17 About leaving the shutter of a camera cocked: As I understand metals and fatigue, leaving a spring under tension (assuming that it has not been stressed beyond its elastic point) *does not* cause the metal to fatigue. Only repeated movement (flexing, vibration, stretching, etc.) of metal will cause it to fatigue and break. Therefore, leaving the shutter cocked on a camera should have almost no ill affect on the shutter reliability. Any mechanical engineers out there care to refute this (il)logic? Pat Vilbrandt John Fluke Mfg. Co., Inc. (...decvax!microsof!fluke!pwv) (...uw_beaver!fluke!pwv) (...ssc-vax!fluke!pwv) (...and others!fluke!pwv)