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Hot Wheels Racing

with PocketLab

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January 30, 2018

The PocketLab Team

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Objective

  • Experiment with potential to kinetic energy conversion
  • Hands-on experiment to measure position, velocity, and race times
  • Convert Gate Times to speed and kinetic energy measurements

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Example Results

Gate 0

Gate 1

Gate 2

before loop

Gate 3

after loop

Gate 4

Gate 5

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Supplies

Hot Wheels Track and Car- https://www.amazon.com/gp/product/B0721CGJMT/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

Magnets (10 mm diameter)- https://www.amazon.com/gp/product/B0753ZPBLQ/ref=oh_aui_detailpage_o01_s02?ie=UTF8&psc=1

Command Velcro Strips- https://www.amazon.com/Command-Picture-Hanging-16-Pairs-PH204-16ES/dp/B073XS3CHV/ref=sr_1_9?ie=UTF8&qid=1517338561&sr=8-9&keywords=command%2Bstrips&th=1

PocketLab Voyager

Hot Glue or Quick Set Epoxy

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Track Connector- 3D Printing Files (Optional)

Track Connector Single.stl file

Track Connector Two Track.stl file

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Track Connector- install magnets in bottom to act as timing gates

Hot Wheels Track Connector

3D Printed Track Connector

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Setup

  1. Place magnetic track connectors every two sections to act as timing gates
  2. Construct track to your unique design
  3. Attach a Command Velcro strip to the Hot Wheels car and the PocketLab Voyager sensor
  4. Connect the PocketLab Voyager to the PocketLab App
  5. Select Magnetic Field Magnitude from the Graph Options
  6. Set the data rate to 50 samples/sec

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Manually extracting gate times from the graph data is easy in the app

Gate 1 time = 2.56 s

Gate 2 time = 3.00 s

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Race Time Calculator Spreadsheet

Automatically extracts Gate Times and calculates Time Splits and Average Speeds

https://drive.google.com/open?id=1hfv8PI80MSI4TrFGl62tQN-t_ydkqbZdlE4t26OdcwA

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Extension- Design and make your own cars with 3D printing and compare race times and speed