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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'>I remember Doug Hughes telling me that
when Mears and Stainbank decided to start fitting ball bearings, his father
consulted a great many leading engineers of the day, all of whom, given the
application, came up with the pretty much the same answer and resulted in the
product that the firm used for a good many years and, in most cases, with great
success. Liverpool Cathedral bells are hung on these bearings and
their go amply demonstrates that, given the right conditions, all those
engineers were on the mark in their advice.<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'>Personally, I still think well
engineered and carefully looked after plain bearings take a lot of beating.<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'>R<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>Roderic Bickerton<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, 24 June 2009 5:32
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> RE: [Bell Historians]
Restorations etc</span></font><o:p></o:p></p>
</div>
<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><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><br>
<br>
<br>
<o:p></o:p></span></font></p>
<p style='margin-bottom:12.0pt'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>I would challenge the statement of unsuitability of
Whitechapel single row<br>
races, they were excellent by design, but some suffered from 3 possible<br>
installation faults, the first being an unsuitable grease which attacked the<br>
housing and turned into a substance resembling chocolate.<br>
The second was not allowing enough end float sometimes resulting in<br>
pinching.<br>
The third was the design of the gudgion baring retaining washer, which<br>
sometimes came loose, allowing the retaining screw to rub on the housing<br>
causing contamination, which resulted in destruction of the bearing.<br>
<br>
Over enthusiastic grease packing causes grease pumping losses, and can cause<br>
the baring to fail. There needs to be enough space in the bearing housing to<br>
allow the moving parts of the bearing to clear themselves of grease, and run<br>
un encumbered by grease. This is well known.<br>
<br>
The bearings themselves were self aligning because the outer raceway had a<br>
spherical outside which was housed in a spherical holder with a plain<br>
outside. <br>
<br>
-----Original Message-----<br>
From: <a href="mailto:bellhistorians%40yahoogroups.com">bellhistorians@<wbr>yahoogroups.<wbr>com</a>
[mailto:<a href="mailto:bellhistorians%40yahoogroups.com">bellhistorians@<wbr>yahoogroups.<wbr>com</a>]<br>
On Behalf Of David Cawley<br>
Sent: 24 June 2009 01:06<br>
To: <a href="mailto:bellhistorians%40yahoogroups.com">bellhistorians@<wbr>yahoogroups.<wbr>com</a><br>
Subject: [Bell Historians] Restorations etc<br>
<br>
Rod's remarks about that good old M&S eight at Axminster pre-restoration
are<br>
very much to the point and in my opinion most appropriate. It is a pity<br>
therefore to read of his recent disappointment. Rings like Axminster was<br>
deserve to be cherished. It was always a pleasure to go there and enjoy what<br>
Rod describes and then go to the marvellous heavy six (JT 1925) at<br>
Axbridge.<br>
<br>
I also concur with his remarks about the pre-restoration ring at King's<br>
<st1:City w:st="on"><st1:place w:st="on">Lynn</st1:place></st1:City>. I rang
there regularly in 1964-5 including a couple of peals, and<br>
found them tough going after a while. They all had Mears single race ball<br>
bearings of 1953, but the majority of the fittings were Mears 1887, with a<br>
frame partly of that date and partly of 1766. This frame remains in the<br>
tower, the new frame beneath it. At the time of the recent restoration it<br>
was suggested that the two 1887 trebles might be recast, being vastly<br>
inferior to the other bells (including the 8th of 1893). <st1:City w:st="on"><st1:place
w:st="on">Taylors</st1:place></st1:City>' recent<br>
tuning has made them far more acceptable, and the money was better spent on<br>
recasting and enlarging the uncharacteristicall<wbr>y horrible Dobson 9th. The<br>
L&P tenor is a superb bell even at only 28-1-4 in C# ; this untuned bell<br>
retains its canons, which may account for some people finding it slow<br>
turning or "ringing its weight". If the natural speed of the bells is<br>
respected they can be appreciated as a fine ten and a good job in every<br>
respect, notwithstanding the recent, well-aired and now resolved problems,<br>
which were not of the Foundry's making. <br>
<br>
As I say, the bells were previously on Mears 1953 single race bearings. It<br>
used to be a "stock phrase" of <st1:City w:st="on"><st1:place w:st="on">Taylors</st1:place></st1:City>
that "these are of a shafting type<br>
which we do not consider at all suitable for church bells." In fact
between<br>
about 1925 and the 1970's (when they went over to the off-the-peg double-row<br>
housings) Mears & Stainbank fitted thousands of these units. The substantial<br>
housings are beautifully engineered and I would hazard a guess that a<br>
sizeable number continue to give good service to-day. The main danger, as<br>
Rod says, is dirt, which may enter through over-greasing and bursting the<br>
seals; another danger is of course lack of use, which may cause spotting of<br>
the ball races. These are equally enemies of double-race bearings. <br>
<br>
DLC <o:p></o:p></span></font></p>
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