[Bell Historians] Re: Clapper failure information request

Bickerton, Roderic K (SELEX) (UK) roderic.bickerton at 20P3L8t75W8ATZ_85vCYfFi2EEJHmkf29qhlW8_pkBTwaq1NBbU_RhhRwc7FbnQfkHXAnrmAPv766H6FAqfEaFh_zzGmuPvVtg.yahoo.invalid
Fri Mar 10 09:05:04 GMT 2006

I remember 30 years ago standing on bordered aria in front of Southwark cathedral tanner whilst it was being rung.

Having seen at close quarters the deflection and viberation of the clapper stem, the amazing thing to me is that some large bell clappers actually survive and have a reasonable working life.

Has a hollow steel shaft ever been tried?
Obviously the thickness would need to be contoured, with a very careful transition from solid to hollow to avoid a stress point, but hollow section is the classic way of increasing strength without increased mass.

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