1. SCO: Egg Scrambler
Design 39 Campus

2. Egg Scrambler Kick off Introductions Expectations Milestones
2 hour class every Sunday at coach’s residence , attendance will be taken as per D39 SO Olympiad rules
Will need to look into possibility of moving to school once building is done , for testing and calibrating the devices
1 binder/notebook to take class notes
No devices (phones ok as long as its to contact parents)
Follow class rules ,
2 per team - coach will make final team decision
Milestones
Familiarize oneself with Egg Scrambler rules ( Very important)
Build Egg Transport Vehicle
Build Launching mechanism
Egg Rest/Holder
Test & Calibrate

3. Or What is Egg Scrambler ? NOTE:
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in the placeholder to insert your own image. Or
What is Egg Scrambler ?

4. Egg Scrambler
Description : Prior to the competition, one must design, build and test one mechanical device which uses the energy from a falling mass to transport an egg along a track as quickly as possible and close to the center of a terminal barrier without breaking the egg

5. What does this mean?
YES 
NO 

6. Let’s take a look at some successful runs
CDC7F

7. Now the unlucky ones http://www.tubechop.com/watch/6858653

8. Construction Rules
The Scrambler must consist of an Egg Transport vehicle (ETV) and an Energy Propulsion System
These may be separate or combined into 1 unit
The ETV may not contribute to or be part of the falling mass -> what does this mean
what does it mean :
The entire Scrambler including the egg must not exceed 0.90m in any dimension ( 0.90m = 2 feet & 11 inches)
Should start with an unsharpened #2 pencil with unused eraser
No electricity or electronics
Egg provided at the event
Foremost part of vehicle
Taped to the vehicle, no tape in front 1cm of egg
Back of egg should touch the backstop

9. ‘16 8.5m Scrambler 2016 Minimum distance (8.5m) 0.5 m
9.00 m to m
1.00 m interval : Regionals
0.25 m interval : State
0.10 m interval : National
0.5 m
8.5m
Scrambler 2016

10. Energy Propulsion System

11. ETV Launcher 1: Hammer Launcher

12. Hammer Launcher Pros High theoretical efficiency Very easy to build
Cons
High dependence on mass used
Theoretical efficiency is difficult to achieve, due to the non-truly elastic collisions
The rapid acceleration is stressful on the car, requiring it to be sturdy
There is a chance that (due to the force of impact), the yolk of the egg is ejected from the shell at the moment of impact

13. ETV Launcher 2 : Pulley Launcher

14. Pulley Launcher Pros Good theoretical efficiency
Easy to achieve theoretical efficiency
Simple construction
Cons
Some dependence on mass used

15. ETV Launcher 3 : Spring Launcher

16. Spring Launcher
Pros
Nearly maximum theoretical efficiency possible in a scrambler
Reasonably easy to achieve the theoretical performance
Low dependence on mass used
Cons
The locking mechanisms are often difficult to build
Complexity of the device requires careful construction
Rapid speed of the car makes it difficult to stop

17. Egg Transport Vehicle

18. The Egg Transport Vehicle (ETV)
Wheel and Axle
Straight
Sturdy
Traction

19. ETV Rules Read the rules for the ETV constraints
The egg transport device (the vehicle) will be designed to launch from a launching device, and coast across the track to the terminal barrier.
The vehicle must be capable of stopping on its own. The distance it runs before stopping must be adjustable and self‐activating.
Students must learn to set the distance accurately for each possible target distance at a given competition.
The egg will be the foremost object on the vehicle. If the vehicle hits the wall, the egg must absorb the impact. No cushioning may be used to mitigate the impact effect.
The vehicle should run a consistent and predictable path. Students will learn to aim the vehicle at the center of the terminal barrier by adjusting the launcher, the vehicle, or simply by repetition.
Students will have limited time – 8 minutes – to set up and run two runs. This should also be practiced.

20. ETV considerations Type of wheels used & friction Size of wheels used
Rubber
Wood
Plastic
Size of wheels used
Do all the wheels need to be of the same size?
2 wheeled vs 3 wheeled vs 4 wheeled ETV’s
Advantages/Disadvantages of having lesser vs more wheels

21. Braking System

22. Braking Why do we need braking ?
The stopping mechanism must be contained completely within the ETV and must work automatically.
The ETV must not be remotely controlled or tethered
Examples
: (wingnut)
String wrapped around wheel
Spring brakes
Mass falling/resting on floor (Not allowed)

23. Egg Rest

24. ‘16
Rigid, unpadded and completely filled – no unfilled holes
No nails visible
on this face
4 cm

25. Important Links http://scioly.org/wiki/index.php/Scrambler

26. HW Think about a design and sketch it out for next class
We need raw materials to experiment with. So look around your house and see if you can find unused
Wheels
Pulleys
Strings
Wood/Aluminum roads