Empowering Student Innovation for a Clean Energy Future

Black Jack

We are Team Black Jack

Solar Car Name:

Black Jack

We named our car “Black Jack” because we like the books, “Percy Jackson and the Olympians” by Rick Riordan. There is a character named “Black Jack” in the books. He is a pegasus, or a flying horse, not to be confused with an alicorn, which is a unicorn with wings. We think our car is so fast that it flies like a pegasus. So we named it, “Black Jack.”

Organization Name:

Sumter Stem 4-H Club – Sumter County, FL. Our team is representing our 4-H Club. Our club focuses on STEM based projects, including robotics, engineering, gardening, and computer science. We meet weekly to work together on projects.

Team Members:

  • Addie C. – 4th Grade – Homeschool
  • Lily T. – 4th Grade – Homeschool
  • Jada F. – 4th Grade – Homeschool
  • Caroline C. – 4th Grade – Homeschool

Car Pictures:

Video of our Solar Car “Black Jack”

Car Drawings:

Car Specifications:

Length26.8 cm
Width w/wheels14.5 cm
Width of Solar Panel12.75 cm
Length of Solar Panel26.6 cm
Height13 cm
Back Wheel Size4 cm
Front Wheel Size3.5 cm
Gear Ratio4:1
Total Cost:$49.20

Cost Breakdown:

  • Solar Car Kit: $48
  • Battery Pack: $1
  • Camp Half Blood Stickers: $0.20

Total Cost: $49.20

Donated/Recycled Materials:

  • Legos
  • K-Cup (Recycled)
  • Rhinestones
  • Solo Cup (Recycled)
  • Black Spray Paint (Donated)
  • Hot Glue (Donated)
  • Velcro (Donated)

Project Diary Log

DateTimeDurationTasks CompletedTeam AttendanceLocation
March 22, 20239 A.M2 Hours– Planned, designed, and sketched the first car idea
– Watched some solar car design videos to get ideas for our car
– Tested how to power the motor with batteries to understand how it works.
– Built a quick basic chassis with wheels to test gear ratio
– Learned that a 1:4 Ratio would not drive the car
Addie, Caroline, and JadaAddie’s House
March 27, 20233:30 P.M1.5 Hours– Watched Pitsco Building video
– Measured Balsa Wood
– Cut Chassis using Pitsco Specs
Addie, Caroline, and JadaABC Church
April 3, 20233:30 P.M1.5 Hours– Assembled the Chassis with Battery Pack
– Put motor on backwards, and car drove in reverse
– Attached spacers too far from the wheels, so the car wobbled, we moved them to the outside of the chassis
– Battery power Trials in Hallway – Car went crooked
– Sanded car parts
– Named and Spray Painted Chassis
Addie, Caroline, and JadaABC Church
April 5, 202310 A.M2 Hour– First Car design with solar panel
– Cloudy Day, Battery Power Trials down Hallway.
– Design Flaw: Table Tennis Ball and Battery pack wouldn’t fit under solar panel
– Redesigned chassis structure to increase space between solar panel and chassis
Addie, Caroline, and JadaCaroline’s House
April 10, 202310 AM2.5 Hours– Build redesigned car
– Added height to solar panel support using legos and a solo cup
– Respray painted car
– Solar power trials, but it was too cloudy again
– Switched to battery power and did 5 meter trials to practice hooking up power and releasing car
– Hard to change batteries, decided to velcro battery pack in so it was easy to remove.
Addie, Caroline, Jada, and LilyABC Church
April 13, 20239:30 A.M3 Hours– SOLAR POWER TRIALS FINALLY!!!
**See Time Trial Data below**
– Website Design
– Took and Edited Videos
– Practiced speech and determined team captain.
Addie, Caroline, Jada, and LilyCaroline’s House
April 14, 20239 A.M2 Hours– Worked on website
– Recorded video for website
– Reattached headlight rhinestone
Addie, Caroline, and JadaABC Church
April 16, 20234 P.M1 Hours– Finished Website design
– Packed up our solar car box
Addie, Caroline, Jada, and LilyAddie’s House
TOTAL Hours:15.5 Hours

Solar Panel Time Trials

1DNF8 metersNoneSunnyCar jumped off the track.
29.3 sec20 meters2.15 m/sSunnyThis was our best time. It is a partly cloudy day, but the sun was out.
3DNF0 metersNONECloudyThe sun went behind a cloud. The car did not move.
419.18 sec20 meters1.04 m/sSunny then CloudyThe sun was out when we started then it went behind a cloud and the car slowed down.
511.48 sec20 meters1.74 m/sCloudy then SunnyThe sun was hidden at the start, it took a second to start moving, then the sun came out and the car went fast.
6DNF10 metersNoneSunnyAlligator Clip fell off motor, so car stopped moving
711.21 sec20 meters1.78 m/sPartly SunnyPartly sunny
812.6 sec20 meters1.58 m/sPartly SunnyPartly sunny

Battery Pack Trials

19.9420 Meters2.01 m/sTried our battery pack incase we need it for race day
210.2520 Meters1.95 m/sTried our battery pack incase we need it for race day
Some of our battery trial runs

Project Reflection and Bloopers

We really enjoyed working on this project together. We learned a lot about building our car and having to work together. We liked our car’s design and we wanted to add wings to the design but couldn’t figure out where to attach them.

We had a lot of partly cloudy days so it was hard to test our car on solar power.

Special Thanks

Thank you to our parents for helping us with our project. They helped us with website design, photos, video editing, some math, hot glueing, and soldering.

2 thoughts on “Black Jack

  • I really like how they brought a card game into a race


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