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PDF Version - The American Watchmakers-Clockmakers Institute

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challenging situations, part 3<br />

the stem pilot<br />

by Dale ladue, CMW21<br />

Figure 9. <strong>The</strong> bushing parted from<br />

the stock.<br />

Figure 10. <strong>The</strong> bushing was mounted<br />

in the lathe, and was broached<br />

slightly to remove burrs. <strong>The</strong> pilot<br />

was tested again for freedom in<br />

the bushing.<br />

Figure 11. <strong>The</strong> bushing’s height<br />

had to be reduced.<br />

Figure 12. A mandrel was turned<br />

out of brass to support the tiny<br />

bushing and the bushing’s height<br />

was reduced approximately one<br />

half.<br />

Figure 13. <strong>The</strong> bushing in place;<br />

notice the pilot wear mark.<br />

Figure 14. With the bushing in<br />

place the stem pilot has been<br />

returned to its original position,<br />

eliminating any contact with the<br />

minute recorder wheel pivot.<br />

Dale LaDue is a second generation watchmaker-clockmaker<br />

who has been a contributing author to HT for many years.<br />

A graduate of the Gem City School of Horology, he has been<br />

in business in the Rochester, NY area for nearly 30 years.<br />

Dale’s work covers the gamut of “challenging situations,”<br />

which are often the topics of his articles. Dale is also the<br />

current president of the New York State <strong>Watchmakers</strong><br />

Association.<br />

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Horological Times December 2010 18

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