[Bell Historians] restoration or improvement, was Bishopesgate

Alan Taylor alantaylor at 91IBc5YXeu0_vUDS4H1fe1l8IRBex4Fo0L8JG_v-IPQXCMweQrOTt8c696YkFenW0_8BPioonGLtfj4CwrViu0C-XQ.yahoo.invalid
Fri Oct 31 10:37:41 GMT 2008

The cannons were removed when the bells were re-hung in the 1990s.


As for the rest, a faculty will have to be sort and no doubt all will be
discussed within that process. 





From: bellhistorians at yahoogroups.com [mailto:bellhistorians at yahoogroups.com]
On Behalf Of Bickerton, Roderic (SELEX GALILEO, UK)
Sent: 31 October 2008 10:25
To: bellhistorians at yahoogroups.com
Subject: RE: [Bell Historians] restoration or improvement, was Bishopesgate


If it is to be welded, there is still an issue as to what is repair and what
needs conserving.


Should sound bow wear be filled?

If so there will be some change of tone and pitch.

Should mining damage associated with crown staple removal be filled and the
crown accurately re drilled?


I believe technically it is possible to replace the cannons, if it is
possible to obtain the information necessary to make a decent replica.


Its been noted the casting has some flaws, should areas of holes or porosity
be cut out and built back?


Should it be slightly re tuned?


Its a bell  presumably has a full tonal analysis, as it has an exact
frequency quoted.


I would guess a tuning expert would be able to say where a few extra mm of
metal could be added during the welding to make tuning give a much better


It could well be that the area where more metal would be desirable is where
previous tuning attempts have been made, making addition a restoration
rather than an improvement. 'Would it matter if the tuning had been
attempted by the founder or many years later?





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