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The Unofficial LEGO MINDSTORMS NXT 2.0 Inventor's Guide, 2nd Edition by Laurens Valk, David J. Perdue

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Chapter 6. Building with Gears

In Chapter 4 we briefly discussed the gears in the NXT 2.0 set. We noted that their general purpose is to transmit motion, and we outlined three subcategories: bevel gears, double bevel gears, and “other” gears. In this chapter we’ll expand our discussion of the gears and learn how to effectively transmit motion through a variety of gearing techniques. We’ll begin with a key gearing concept, the gear train, and establish some important terminology. Then we’ll explore how to properly control the performance and manage the assembly of systems of gears.

The Gear Train

Whenever we use two or more gears to transmit motion, we call the series of gears a gear train. To help us understand some of the concepts surrounding the ...

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