Formula High School Team NAPA

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Formula High School
Team NAPA
Trevor Quass, Jake Liimatta, Matt Bronk, Javier
Alavez, Uzi Amezquita, Ryan Delwiche
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The Project

• The goals of Formula High School
• Increasing awareness of engineering and technical
  careers
• Promoting teamwork and interpersonal skills among
  competitors
• Construction of a product with specific
  tolerances and deadlines
• Applying knowledge from other disciplines to an
  engineering problem
• Connect the schools and students to their local
  manufacturers
• Apply the concepts of marketing and increase the
  students public relation skills
• Help create the workforce of the future

3
Design
Students were provided with the basic chassis
blueprint, for safety purposes, but were free to
design everything else from the ground up.
Everything was modeled on the computer before
fabrication to determine if any problems would
arise.
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The Frame

• The NAPA vehicle began as 1.5 square and 1
  round tubing. The roll-bars were professionally
  bent, but all other fabrication was done by the
  team.

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The Drivetrain
What makes the NAPA vehicle unique is its 48V
electric drivetrain. Two Briggs and Stratton Etek
electric motors power the two speed jackshaft.
Low gear tops out at 25mph and puts out 190
ft.lbs of torque at 0rpms high gear will bring
the vehicle to more than 60mph. Battery life is
estimated at more than 25 minutes this is less
run-time than the other teams cars, but the NAPA
vehicle has twice the power.
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The Drivetrain, cont.
The NAPA vehicle has a lot of power. Yes, it will
spin both rear tires.
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The Brakes
With all that power, the car needs to have hefty
brakes to be able to stop quickly. The Volkswagen
brake system provides a lot of stopping power
front and rear.
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The Body-Shell
We would like to thank Ken from Fiberglass
Solutions here in Green Bay. His help laying out
our body-shell was invaluable. We would also like
to thank Sugar Grove Custom Cars for allowing us
to use their molds.
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The Finished Product
After months of effort by the team, the NAPA
vehicle was ready to race at the Briggs
Stratton Motorplex in Elkhart Lake. Our trackday
didnt exactly go as plannedthe battery life was
not what we had calculated. A full charge lasted
only 3-4 laps, and then the power dropped off
quickly.
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Post Road America Revisions
The team decided the simplest way to improve our
battery life was to increase the performance of
the batteries. We substituted the compact 23ah
batteries for 80ah marine deep-cycles. This
increased our run-time to 25 minutes or more. The
increased performance was worth the added weight.
This vehicle recorded 190 ft/lbs of torque at 0m
RPM during chassis dyno testing.
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What weve learned

• This vehicle would never have been completed if
  we hadnt worked together as a team. This is the
  way it works in the real world, in the workplace.
  Each member has to put in the effort, be a part
  of the team. Though we gained fabrication skill
  and engineering experience through this project,
  the value of teamwork is what stands out the
  most.

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Sponsors