1. HMTEF-100 racer Hail mary toymakers- A16   Jacob Groothuis, Ben Miller, Beverly Wesh, Lilly McCampbell
EF 152 Spring, 2017
April 6th, 2017

2. Customer requirements & product selection
Kids from ages 5 to 10
We chose a car because it’s a universally appealing toy, and we made it “built it yourself" so kids are able to change out the body style and see the inner workings of a car
Other ideas we had:
“Angry Birds” real life simulation game
Brain teaser puzzle
Solar powered car
Beverly

3. Conceptual design
Several choices and different routes we could take building the car:
3D print the wheels vs. buy wheels
Solar power vs. propeller
3D print body vs. build out of wood
We chose to 3D print the body and laser cut the wheels to give us more accuracy when designing
We also chose to use a propeller to eliminate some of the electrical work that comes with using a solar panel
Jacob

4. Actual design 3D printed body of car
Top picture is dragster design
Bottom picture is base
Bottom and top connected with pegs in holes
Propeller attached to motor set out of hole in the back of the base and then to 9 volt battery
Axels attached with hot glue
Laser cut wheels
Ben

5. Marketing video

6. Customer feedback and results
Prototype showed to two boys, ages 6 and 8
Interested about the idea that you could change the body style
Wanted multiple cars to be sturdy enough to be rough with
Brought up the idea of adding on “fast packs” which would essentially be more powerful motors to make the cars go faster
Lilly

7. Cost and time estimate Prototyping costs: $13.79
Axels: $1.55
Propeller: $0.44
Motor: $1.93
3D printing cost: $3.20
Battery terminal: $0.44
Velcro: $1.24
Toggle Switch: $4.99
Batteries not included
Cost per 1000 units: $8,990
Buying in bulk, decrease price by 35%
Retail price: $29.99
Design time: hours
Data from Project Notebook
Beverly

8. CONCLUSION
The biggest obstacle we had to overcome was the time constraint of 3D printing
Our design is simple but because we tried to print 4 wheels and the body it was difficult to build quickly while waiting for the parts to finish
We stand by the quality of our product and believe it will be successful in the market because of the versatility and simplicity of the design
If we were to redesign the product, we would make the entire car wooden and not 3D print the body