
Contents
xiii
Foreword xxv
Preface xxvii
Part I Tools 1
Chapter 1 Understanding LEGO
®
Geometry 3
Introduction 4
Expressing Sizes and Units 4
Squaring the LEGO World:Vertical Bracing 6
Tilting the LEGO World: Diagonal Bracing 10
Expressing Horizontal Sizes and Units 12
Bracing with Hinges 14
Summary 15
Chapter 2 Playing with Gears 17
Introduction 18
Counting Teeth 18
Gearing Up and Down 19
Riding That Train:The Geartrain 21
Worming Your Way:The Worm Gear 23
Limiting Strength with the Clutch Gear 24
Placing and Fitting Gears 26
Using Pulleys, Belts, and Chains 31
Pulleys and Belts 32
Chains 35
Making a Difference:The Differential 36
Summary 39
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