The illustrated shaft has an overall length...

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Question 1 of 205eccef9abacbc34ba4d45071

The illustrated shaft has an overall length of 42 inches. If the diameter of "E" = 4.75" and "F" = 6", with an indicated radius of "R" = .125" and the length of "X" = 8"; then the TPF (taper per foot) is __________. See illustration GS-0133.

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🔍 Key Concepts

• Definition of taper per foot (TPF) as change in diameter per 12 inches of length • How to use the given diameters E and F and the taper length X from the sketch • Why the small radius R at the ends does or does not affect the taper calculation

💭 Think About

• Look at just the tapered section labeled by X. Over that distance, how much does the diameter change from E to F? • Once you know the change in diameter over 8 inches, how can you scale that to find the change over 12 inches (one foot)? • Check whether the overall shaft length (42 inches) is actually used in the taper calculation, or if only the local tapered portion matters.

✅ Before You Answer

• Be sure you are using diameter change (F − E), not radius change • Convert the taper from "per 8 inches" to per 12 inches using a proportion • Confirm that you are ignoring the small corner radius R when measuring the straight-line taper.

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