Archived posting to the Leica Users Group, 2007/05/24
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]of course you are correct; and IANASE (I am not a structural engineer). at first glance the m8 failure reminds me of some of the failures described in the entertaining book "why buildings fall down: how structures fail" http://www.amazon.com/Why-Buildings-Fall-Down-Structures/dp/039331152X there are descriptions of how a structure may be soundly designed, but then some seemingly innocuous change (such as substituting a single load-bearing rod with two rods) makes the structure unsound. professor salvadori, the primary author, was an eminent civil engineering scholar and my father's phd advisor at columbia. -rei On May24 04:56, grduprey@mchsi.com wrote: > Rei, > > I'm not sure that one or even two failures constitutes a design flaw. I > would lean toward a bad casting at this point. > > Gene > > -------------- Original message from Rei Shinozuka <shino@panix.com>: > -------------- > > > > that's kind of horrifying to see the metal housing of the m8 > > fail so catastrophically. i guess the design is faulty; > > the front-back split effectively means that the baseplate > > sort of hooks into a lower corner of the front piece. a > > one-peice design would not fail in this manner. > > > > it's hard to imagine there was much stress on a tripod--the > > lens it was mounting was only a 50 lux, rather than > > a heavy noctilux or 75 lux. > > > > at least the lens didn't look like it was damaged in the fall > > > > -rei > > > > On May23 19:00, Robert D. Baron wrote: > > > This report on the LUF regarding failure of the base of an M8 is > > > perhaps > > > of some concern: > > > > > > > > http://www.l-camera-forum.com/leica-forum/leica-m8-forum/25121-base-plate-failur > > > > e.html > > > > > > or > > > > > > http://tinyurl.com/2m9kdx > > > > > > I am not a metallurgist nor do I play one on tv. I have no idea if > > > this > > > is a rare event or something to fret over. > > > > > > I looked at my own base and it looks fine (solid, it appears) but what > > > do I know? > > > > > > > > > > > > --Bob > > > > > > _______________________________________________ > > > Leica Users Group. > > > See http://leica-users.org/mailman/listinfo/lug for more information > > > > -- > > Rei Shinozuka shino@panix.com > > Ridgewood, New Jersey > > > > > > _______________________________________________ > > Leica Users Group. > > See http://leica-users.org/mailman/listinfo/lug for more information > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information -- Rei Shinozuka shino@panix.com Ridgewood, New Jersey