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<p class=MsoNormal><font size=3 color=black face=Optima><span style='font-size:
12.0pt;font-family:Optima;color:black'>It’s a <i><span style='font-style:
italic'>very </span></i>long time<i><span style='font-style:italic'> </span></i>since
I did any engineering, but I seem to remember that the dynamic load created by
use of ball bearings is considerable greater than that from plain bearings,
which is why the diameter of gudgeons on bells hung on ball bearings is usually
significantly larger than for those hung with plain bearings. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face=Optima><span style='font-size:
12.0pt;font-family:Optima;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face=Optima><span style='font-size:
12.0pt;font-family:Optima;color:black'>Over the years there have been a number
of gudgeon failures on bells where locals have fitted ball bearings to original
gudgeons that were manufactured for use with plain bearings.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face=Optima><span style='font-size:
12.0pt;font-family:Optima;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face=Optima><span style='font-size:
12.0pt;font-family:Optima;color:black'>I’m sure some of our number who
are current engineers will be able to furnish a much more ‘scientific’
explanation than the above!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face=Optima><span style='font-size:
12.0pt;font-family:Optima;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face=Optima><span style='font-size:
12.0pt;font-family:Optima;color:black'>Richard<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face=Optima><span style='font-size:
12.0pt;font-family:Optima;color:black'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> <st1:PersonName
w:st="on">bellhistorians@yahoogroups.com</st1:PersonName> [mailto:<st1:PersonName
w:st="on">bellhistorians@yahoogroups.com</st1:PersonName>] <b><span
style='font-weight:bold'>On Behalf Of </span></b>George Dawson<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, 19 May 2008 11:01 PM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">bellhistorians@yahoogroups.com</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> [<st1:City w:st="on"><st1:place
w:st="on">Bell</st1:place></st1:City> Historians] <st1:Street w:st="on"><st1:address
w:st="on">Moseley St</st1:address></st1:Street> Mary</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 color="#1f497d" face="Times New Roman"><span style='font-size:11.0pt;
color:#1F497D'>If the gudgeons were safe enough with plain bearings, then why
should they not be with ball bearings?<o></o></span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 color="#1f497d" face="Times New Roman"><span style='font-size:11.0pt;
color:#1F497D'> Clearly here there was a more substantial failure than b/b
collapse.<o></o></span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 color="#1f497d" face="Times New Roman"><span style='font-size:11.0pt;
color:#1F497D'>George<o></o></span></font><o:p></o:p></p>
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