Kinetic energy captivates, reminiscent of childhood toys that zipped forward powered only by stored momentum. Enter James Bruton, an inventive YouTuber who turns this simple wonder into an engineering challenge by crafting a vehicle propelled entirely by elastic bands. These aren’t ordinary bands—they’re robust resistance bands capable of storing significant energy.
Bruton embarks on this journey with a test rig constructed from 4040 aluminum extrusions. Using Lazy Susan thrust bearings, he measures how much energy the bands can store when twisted rather than stretched. Initial tests show promise, storing ample energy to hint at human propulsion potential.
Turning Potential into Motion
Transforming this potential energy into movement involves complexity. Bruton utilizes 3D-printed bevel gears for a 2:1 torque increase, initially moving for only a few meters before encountering band stress. Undeterred, he adapts the drivetrain, achieving a 6:1 ratio, which improves power delivery and prevents band deformation.
To store more energy, Bruton designs a routing system with multiple bands traversing the chassis through intermeshing gears. With CNC-machined aluminum and custom components, the setup withstands intense twisting forces.
Refining the Design
Adding bands inadvertently reveals that increased stored energy doesn’t equate to proportional torque. Inspired, Bruton reconfigures the bands into parallel columns, optimizing power and efficiency.
If you enjoyed this innovative engineering feat, read about Maja Stamenković’s sculptural tribute to handwritten letters featured at the Venice Design Biennial.
Through relentless tweaking and prototypes, Bruton’s elastic-powered machine triumphs. It propels almost 10 meters on stored elastic energy, ultimately stretching the distance beyond 12 meters in a final attempt. While not ready to replace electric engines, it showcases groundbreaking ingenuity.
Bruton’s experiment redefines what’s possible, blending childhood wonder with innovative engineering, creating a masterpiece of mechanical creativity.
Source: yankodesign.com
Frequently asked questions
What did James Bruton use for the test rig?
James Bruton used 4040 aluminum extrusions to construct the test rig for his elastic band vehicle.
How did Bruton enhance the vehicle’s power delivery?
Bruton enhanced power delivery by adapting the drivetrain to a 6:1 ratio, which improved power delivery and prevented band deformation.
What distance did Bruton’s vehicle eventually reach?
Bruton’s elastic-powered vehicle eventually reached a distance of almost 10 meters and stretched beyond 12 meters in a final attempt.