Archived posting to the Leica Users Group, 2020/07/09
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Douglas, after 40 yrs exposure to an industrial environment, my ears hear only a slight tinkle from them. On 7/9/20 10:48 AM, Douglas Barry wrote: > Chimes on a windy night? I hope they're not too close to your bedroom > window! > > On 09/07/2020 15:28, Jim Nichols wrote: >> I checked the? chimes with a magnet, and the material is >> non-ferrous.? It appears that the chimes and clapper are cut from the >> same tubing material, which appears to be aluminum.? From my >> university days in the 1940s, I recall that one of the popular >> aircraft materials was called ALCLAD, which was an aluminum alloy >> protected by a coating of pure aluminum to resist the effects of >> corrosion. >> >> I must assume that the continuous tapping of the clapper causes some >> type of reaction in the material. >> >> On 7/9/20 8:35 AM, Philippe via LUG wrote: >>> The culprit will be the horizontal clapper, made of a different >>> material. Electrolysis over time and banging will have depositied a >>> thin layer over the protective skin of aluminium oxide. >>> >>> >>> Amities >>> >>> Philippe >>> >>> >>> >>>> Le 8 juil. 2020 ? 19:16, Jim Nichols <jhnichols at lighttube.net> a >>>> ?crit : >>>> >>>> These old aluminum chimes have oxidized from years of contact. >>>> >>>> http://www.gallery.leica-users.org/v/OldNick/20200708-P7082399.JPG.html >>>> >>>> >>>> -- >>>> Jim Nichols >>>> Tullahoma, TN USA >>>> >>>> >>>> _______________________________________________ >>>> 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 >>> > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > -- Jim Nichols Tullahoma, TN USA