What s inside your experiment kit:

Transcription

1 EXPERIMENT MANUAL Franckh-Kosmos Verlags-GmbH & Co. KG, Pfizerstr. -7, 70 Stuttgart, Germany +9 (0) Thames & Kosmos, 0 Friendship St., Providence, RI, 090, USA Thames & Kosmos UK Ltd, Goudhurst, Kent, TN7 QZ, United Kingdom

2 Race Cars are missing any s & Kosmos me Tha t parts, please contac customer ser vice. sandkosmos.com US: techsupport@thame sandkosmos.co.uk me tha UK : techsupport@ KIT CONTENTS GOOD TO KNOW! If you What s inside your experiment kit: Description Short anchor pin (yellow) Anchor pin (orange) Joint pin Shaft plug Shaft pin Two-to-one converter 90-degree converter Y, black 90-degree converter X, black Short rack gear Rounded curved rod -hole dual rod, black -hole wide rounded rod, black -hole rod, black -hole dual rod C, black -hole dual rod B, gray 7-hole wide rounded rod, black 7-hole flat rounded rod, black 9-hole rod -hole rod Long rack gear Square frame Rounded square frame Qty. Item No. 7-W0-CY 70-W0-CO -W0-AR 70-W0-HY 70-W0-JR 70-W0-GD 70-W0-JD 70-W0-JD 70-W0-TD 9-W0-CY 70-W0-RD 70-W0-CD 7-W0-KD 70-W0-SD 70-W0-SS 70-W0-CD 70-W0-CD 707-W0-CS 7-W0-PD 70-W0-TD 7-W0-QY 9-W0-BY You will also need: /LR0) and x AAA batteries (.-volt, type AAA LR) AA/ type volt, x AA batteries (.- Checklist: Find Inspect Check off No. 0 9 No. Description Short frame Rounded short frame x dual frame x dual frame x frame Motor shaft (7-mm axle) 70-mm axle 00-mm axle 0-mm axle Small gear, gray Medium gear, gray Large gear, gray Axle lock Worm gear Motor (0x ) Anchor pin lever Wheel -channel IR remote control unit Medium gear, green Trapezoidal cover Trapezoidal plate Tire -channel IR battery box Qty. 7 Item No. 7-W0-IY 9-W0-AY 70-W0-AD 70-W0-US 7-W0-JY 70-W0-LS 70-W0-QD 7-W0-LD 70-W0-PD 70-W0-DS 7-W0-CS 70-W0-WS 0-W0-AD 7-W0-AS 700-W-A 70-W0-BY 707-W0-BY 77-W-A-US 70-W0-DG 70-W0-BY 70-W0-AY 70-W0-CD 70-W-A-US

3 Remote-Control Machines: Construction Race Vehicles Cars TABLE OF CONTENTS TIP! You will find additional information in the Check it out sections on pages,,, 7. Safety Information... Inside front cover Kit Contents... Tips and Tricks... Table of Contents... Introduction Heavy-Duty Machines to Move the Earth... Excavators... Excavators are construction vehicles that have a bucket that can be used to move materials. Build two different types of excavators a bulldozer and backhoe and learn about simple machines. Bulldozer... Backhoe... Movers... Build two different construction machines: a dump truck and concrete mixer. These machines are used to move construction materials. Learn about concrete and cement. Dump Truck... Concrete Mixer... Lifters... 9 Build a crane and forklift, which can be used to lift materials, and learn about pulleys and levers. Crane...9 Forklift... Graders... Graders are construction vehicles used to create flat surfaces. In this section, you can build two different construction vehicles used for grading: a grader and a skid-steer loader. Grader... Skid-Steer Loader...9 Publisher s Information...Inside back cover TIP! Above each set of assembly instructions, you will find a red bar: It shows you the difficulty level for the model s assembly: Two Bonus Models! Download the assembly steps for two additional models, a reach forklift and a wheel tractor-scraper, at: downloads/rcmcv.pdf easy medium hard

4 BULLDOZER 7

5 Excavators Race Cars EXPERIMENT Can you move it? 9 C B A HERE S HOW Find various materials such as small toy blocks, small rocks, crumpled up pieces of paper, or foam packing peanuts. Lay the materials around a room. Then drive the bulldozer around and try to collect the materials. Can you pick up some items and not others? Done! B A C

6 CHECK IT OUT Simple Machines Construction vehicles are complex machines. To analyze and better understand them, you can break them down into combinations of many simple machines that all work together. WHAT IS A SIMPLE MACHINE? A simple machine is a mechanical device that changes the direction or magnitude of a force. A force is simply a push or a pull. A simple machine takes one input force and produces an output force, which is used to do work. For example, when the wheel in the diagram is turned the bucket is raised. This is an example of a simple machine called a wheel and axle. There are six classical simple machines as originally defined by Renaissance scientists: the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. On the Check It Out pages, there are examples of simple machines that can be found in construction vehicles. Can you find more examples in the models you build? MECHANICAL ADVANTAGE The efficiency with which a simple machine amplifies a force is measured through its mechanical advantage. Mechanical advantage is the ratio of the input force to the output force. The mechanical advantage of a complex machine can be found by multiplying the mechanical advantages of the simple machines that make up the complex machine. THE INCLINED PLANE Another example of a simple machine is an inclined plane or ramp. An inclined plane is a flat surface with one end that is higher than the other. Moving an object up an inclined plane requires less force than lifting the object up vertically. However, the object has to be moved over a longer distance. In simple machines, there is often a trade-off between force and distance. Inclined planes are used at construction sites to make it easier to move materials around. Weight Opposing Force THE WEDGE: A BULLDOZER S BLADE A bulldozer is equipped with a large metal plate on its front, known as a blade. It is used to move large quantities of dirt or rocks. The blade is an example of a wedge, another type of simple machine that works like a portable inclined plane. There are different types of bulldozer blades. The straight blade ( S blade ) is very shallow and is used for fine grading. A universal blade ( U blade ) is tall and very curved so that it can carry more material. There are also blades that have a combination of the properties of U and S blades ( SU blades ).