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This car can travel up to 40ft on a smooth and flat surface!

If you enjoy this project, then check out my books: Rubber Band Engineer and Duct Tape Engineer. || More engineering projects || Everything I make


Step 1: Materials

Please message me to report broken links. All of these materials are used in my other Instructables for kids, so your purchases can be used across multiple projects.


Propellers with plastic mount
Wheels
Straws
1/8" dowel
Craft sticks
Craft cubes
Long rubber bands
Paperclips
Masking tape
Hot glue gun

Hot glue sticks

Step 2: Make the Wheels

Step 3: Make the Propeller Shaft


Step 4: Assemble + Launch


Step 5: No-Glue Variation

The no-glue variation uses the same building system as the Geometric Shapes lesson. The low triangular frame is built by using a normal craft stick and two smaller pieces, each approximately 1/3 the length of a normal craft sticks.

The tip of the propeller is taped, which keeps the metal hook in place and allows the user to wind the propeller counter-clockwise. Winding the propeller counter-clockwise propels the car in the direction of the narrow end of its triangular frame.

Step 6: Tips and Troubleshooting

  • Remove any thin strands of dried glue before operating the car. "Hot glue strings" get tangled in the axle or propeller shaft.
  • Make sure the skewers (axles) are straight. These are mass produced and can be severely warped.
  • More rubberbands isn't always better. Too much energy can cause the car to spin wildly out of control.
  • Wide-set wheels are more stable than narrow ones. A narrow car may flip over from the torque generated by the rubber band.
  • The rubberbands may become loose over time. You can breath new life into old bands by unhooking them and tying one end into an overhand knot. Now the remaining band is shorter (and tighter) than before.

Please be sure to take video or photos if you do this project with your class and post it in the comments :)
Have fun teaching!

<p>what is this thing in the red spot? <em>I </em>can't find it any where. And u also don't mention in the material list. Plz tell me ...</p>
<p>they are called eye hooks</p>
<p>LOOKS LIKE A SIMPLE EYE HOOK TO ME. QUITE CHEAP AND CAN BE PICKED UP AT WALMART OR HARDWARE STORES IN VARIOUS SIZES. THOUGH I THINK ONE COULD USE A PAPER-CLIP FOR ITS FUNCTION IN THE BUILD THOUGH</p>
<p>ughhhh</p>
<p> yes i made it but without that thing..</p>
Great idea!
<p>This is a perfect DIY project to be done with loved ones during semester breaks especially if you have school kids at home. They get to be creative while picking up a thing or two about Science. Whilst accomplishing all that, we get to bond and promote family togetherness at the comfort of our own home sweet home.</p>
<p>What is the size of the craft cubes used? Thanks!</p>
<p>The materials list is updated with a link to the correct craft cube size</p>
Thank you - looking forward to trying this project with fourth graders as part of a module on Variables.
<p>You are awesome! I LOVE your instructables and can't wait to try some of these out with my 4th graders!</p>
<p>Please answer me . I have to make it fast</p>
<p>Hello,I am living in India so I could not get the material mentioned above specially propellers and wheel .So can you suggest within 2 or 3 days</p>
<p>Greetings,</p><p>I am teaching an after school hands-on learning program for grades 5 and 6. Your projects look great for our purpose.</p><p>Where do you acquire the propellers, wheels, and other small plastic parts for your models?</p><p>Thanks</p>
<p>There is a whole page in this Instructable dedicated to materials, including links to the propellers and wheels.</p>
<p>Another cool project Lance, I can already imagine the competitive fun my classes will have racing these things across the school gym. Huge thanks!</p>

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Bio: I'm a writer, maker, and educator. For free lesson plans and teaching materials, and for assistance with any of my projects, check out LanceMakes ...
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