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Watchmaking Math

by Jordan Ficklin

I have had many questions form individuals wishing to study watchmaking about the kinds of math on which they may be tested for admission and will have to perform during their career. Here is some watchmaking math which I don’t intend to be a reference for useful equations, as I’m not going to give very much information, but I present them simply as examples one should be able to solve.

The formula for determining the theoretical length of a mainspring given the barrel diameter(R), barrel arbor daimeter(r) and the thickeness of the mainspring (e) L = \frac{\pi ( R^2 - r^2 )}{2 \cdot e}

A formula used for determining the gear configuration in a multiplying gear train. Given all but 1 value solve the equation: \frac{n_6}{n_1}=\frac{z_1 \cdot z_3 \cdot z_5}{z_2 \cdot z_4 \cdot z_6}

Really, folks this is about as difficult as it gets. It is basic algebra and ratios. You will of course be expected to be able to determine which formula is appropriate and which values represent which variables, as well as eliminate unnecessary information, given the information in a word problem, but this you will be taught.

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This entry was written by Jordan Ficklin and posted on May 7, 2009 at 4:09 pm and filed under watchmaking. Bookmark the permalink. Follow any comments here with the RSS feed for this post. Post a comment or leave a trackback: Trackback URL.

2 Comments

  1. jwoodsy
    Posted May 8, 2009 at 12:36 am | Permalink

    Thanks for this recent post. I know everyone seems to stress out about the “math” portion of the admissions test. This gives me a good idea of what to expect, and to study up on.

  2. Jake K
    Posted May 8, 2009 at 11:32 pm | Permalink

    Much thanks! This information is reassuring as it is within my range of education.

    - Jake

One Trackback/Pingback

  1. By Tick Talk » The Lititz Watch Technicum on 25 Apr 2011 at 12:14 pm

    [...] Due to many requests I have made a new post about watchmaking math. In addition any questions about the current curriculum or costs of attendance, or questions about [...]

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