Team Information

The Pink Shark

Car Name: The Pink Shark

Team Name: The NSU Gang

School Name: NSU University School

Team Members Names: Hannah L (5th grade), Ava B (5th grade), Ellie W (4th grade)

Design Documentation

Top View without Solar Panel

Side View #1

Side View #2

Back View

Front View

Special Feature of Car – Our Aerodynamic front!

Special Features of Car – The Wire that makes our Solar Panel Adjustable…Also, our Front-Wheel Drive, Small-to-Large Gear Ratio!

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Project Log

Date	Hours	Tasks / Work Done	Obstacles Encountered	Modifications to Car
8/23	1	Drew a picture of what we thought the car would look like. Chose our materials,
8/30	1	Drew out axel lines on car body then cut out body shape.	Messed up the axle lines and had to redo them.	Cut out body shape and drew lines for axles on car body.
9/6	1	We put together the front and back axles and wheels. We chose to use small white wheels with rubber tread. We put a gear on the front axle, bearings, and wheels. We put just bearings and wheels on the back axle.
9/13	1	Glued front axle on car	It was hard getting the axles on straight.	Front and back axles are on car body.
9/20	1	Glued back axle on car. Started working on circuit wiring for the motor
9/27	1	We put alligator clips on our wires and made a circuit that included the battery pack with switch to the motor and back to the battery pack.
10/4	1	Glued motor and battery pack on car.
10/11	1	Put on the ball holder.
10/18	1	Was able to run car in hall. It was fast but turning left. Also, wheels move left to right. There is too much room between the bearings and the wheels.	Car is turning left.
11/30	1	Adjusted Wheels, Adjusted straws so wheels can not move left or right, cut eyelid, and did battery.	Still turning left.
12/7	1	Put on guide so that our car could run on guide line.
12/14	1	fixed gear and front wheel		Gear and Front wheel
1/2	1	reglued battery pack	Battery Pack would not open cause we accidentally glued it on.	Battery,Wheels,Straws,Eyelid, and Battery.
1/4	1	Attached Motor, Made and attached ping pong ball holder, attached battery pack, and finished back wheels.		Motor, Ping Pong Ball Holder, Battery, Back wheels
1/11	1	Cut wire and Re-attached Motor		Wire and Motor
1/18	1	Decorated and attached front, cut and decorated pieces of wood that hold up solar solar panel		Wood and Decoration
1/25	1	Tested Car and was very strong	Too little sun to try multiple times.
2/29	1	Tested Car. It ran pretty good but it wrecked into the wall and the motor came off.	Had a little crash
3/9	1	Ran our car outside on both battery and solar panel. The car is running fast but turning left.	Car is turning Left
3/13	1	We got our fastest time today. It was 2.71 seconds. That may be the fastest right now at our school. Sometimes the car goes straight but most of the time it turns left and goes into the other lane. Started working on webpage.	Sometimes the car goes straight but most of the time it turns left.
3/14	1/2	Worked on webpage
3/15	1/2	Worked on webpage
3/16	1	We ran our car outside today. It really turned. We will have to try to fix it a different way. Worked on webpage.	The car is STILL turning left most of the time.
3/17	1/2	Worked on webpage	Work on webpage is going too slow
3/18	1/2	Worked on webpage
3/19	1	Worked on webpage.
3/20	1/2	Worked on webpage
3/21	1/2	Worked on webpage
3/22	2	We added a wire that would allow us to angle the solar panel towards the sun. It also kept the panel from moving. Worked on webpage and added a support for the solar panel.	The solar panel was moving when the car ran. Also, we couldn’t keep the panel facing the sun with it was to the left or right.	Added a support made out of easily bendable wire to hold the solar panel steady and facing the sun.

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Design Drawings

Design Drawing: Top View

Design Drawing: Side View

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Final Car Specifications

Car Size with Panel	Length: 26 cm	Width: 13 cm	Height: 10 cm
Weight with Panel	270.9 g
Wheel Size	Front wheels: 35 cm	Back Wheels: 35 cm
Gear Ration	motor gear: axel gear 10 : 60 = 1 : 6

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Materials Used

Item	Approx. Cost
New:
Pitsco Ray Catcher Solar Panel (3V)	38.25
small white gears, wheels and axels	3.99
Pitsco Motor (3V)	5.25
balsa wood	3.99
spacers for bearings (4)	2.31
battery pack with switch	0.26
switch	3.85
piece of black binder comb to hold guide wire	0.07
alligator clips (2)	0.14
piece of aluminum wire	0.25
electrical wire	0.02
Consumables:
tape
solder
Velcro
hot glue
Paint
Recycled materials:
cup for ball holder
	TOTAL COST: Around 58.38

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Test Results / Trial Runs

Test Runs 1 : 3/9/24

Weather conditions: Mostly Sunny
Ran on panel and battery

Observations of results: Turning Left

We are going to try to nudge the wheels to get it to go straight.

Attempt	Time, S (seconds)	Distance, M (meters)	Speed, M/S
1 Battery	12.72	20	1.57
2 Panel	16.75	20	1.19
3 Panel	22	20	0.91

Test Runs 2 – date: 3/13/24

Weather conditions: Partly Cloudy
Ran on panel and battery

Observations of results: turned left

Any recommendations for improvements: the car did this and we think this.

Attempt	Time, S (seconds)	Distance, M (meters)	Speed, M/S
1 -Panel	7.15	17	2.38
2-Panel	6.28	17	2.71

Test Runs 3 – date: 3/16/24

Weather conditions: Sunny
Ran on battery

Observations of results: turned left

We keep trying to fix the wheels so that the car goes straight but it keeps turning. We may take the wheels off and put them back on straight.

Attempt	Time, S (seconds)	Distance, M (meters)	Speed, M/S
1-Battery	9.97	20	2.01
2-Battery	10.78	20	1.86
3-Battery	9.82	20	1.92

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Video of Our Car Running

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Car Features Video

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Additional Information

Drawing of Our Original Car Idea

Electrical Schematic: This is our schematic of the electrical circuits. It is the same DC motor in both drawings.