G&J Simpson rings

[Richard Offen]

--- In bellhistorians at yahoogroups.com, "Andrew Higson, Bellmaster" 
<andrew_higson at t...> wrote:
> >Taylor's used to rivet theirs - since about 2000 they have drilled 
and tapped the end of the gudgeon and bolted them in.<
> 
> On new headstocks. The riveted gudgeons had a greater angle on the 
taper (about 12 degrees I think) the new ones have a morse taper. We 
still rivet gudgeons when redoing old headstocks which are already 
coned out for the old taper and those that we supply to HMA.
> 
> Andrew Higson
> 
This is probably not particularly relevant to the Historian's List, 
but why do HMA have riveted gudgeonsrather than bolted ones?

R