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"Everything starts as somebody's daydream. And, when you're daydreaming, it is science fiction. It's when you start work out how you put it together, true science fiction becomes real science."
- Larry Niven
 |
| Tumblebug | ||
| A monocycle; a motorcycle that balances on a single wheel. |
In this excerpt, the unthinkable has happened; the rolling roads have been sabotaged. Chief Engineer Gaines assembles his maintenance cadets and sets out to inspect and repair the damage.
| Gaines and Harvey mounted tumblebugs, and kept abreast of the Cadet Captain, some twenty-five yards behind the leading wave. It had been a long time since the Chief Engineer had ridden one of these silly-looking little vehicles, and he felt awkward. A tumblebug does not give a man dignity, since it is about the size and shape of a kitchen stool, gyro-stabilized on a single wheel. But it is perfectly adapted to patrolling the maze of machinery 'down inside', since it can go through an opening the width of a man's shoulders, is easily controlled and will stand patiently upright, waiting, should its rider dismount. |
| From The Roads Must Roll,
by Robert Heinlein. Published by Astounding Science Fiction in 1940 Additional resources -
|
Here's what they thought it would look like in 1940:
(Heinlein tumblebug from Astounding SF June 1940)
The oddest thing about a tumblebug is that it relies on "gyro-stabilization" the way we normally rely on two wheels. The Segway, a two-wheeled conveyance, similarly relies on gyro-stabilization.
Be sure to see how a modern company has created a monocycle concept vehicle similar to the tumblebug: read EMBRIO Embodies the Tumblebug. Closer yet, read about the Eunicycle Gyro-Stabilized Single Wheel Scooter.
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- EMBRIO Embodies The Tumblebug
- Eunicycle Single-Wheel Gyro-Stabilized Scooter
- Segway Robotic Mobility Platform Looks Like A Tumblebug
- Tango Motorcycle Monocycle Like Heinlein's Tumblebug
- Self-Balancing Unicycle - Heinlein's Tumblebug
- eniCycle Self-Balancing Tumblebug
- Honda U3-X Self-Balancing Unicycle Video
- Self-Balancing Unicycle Mythbuster Video
- SBU Self Balancing Unicycle Perfected In V2.0
- Solowheel Self-Balancing Unicycle
- Self-Balancing Electric Unicycle By MIT Student
- Honda's Tumblebug - The UNI-CUB beta
- RYNO To Heinlein - Your Tumblebug Is Ready!
- Pinwheel Battery-Powered Unicycle Is Segway In Your Price Range
- Ninebot One Self-Balancing Wheel
- Solowheel Xtreme Heinlein Tumblebug Video
- Hi-Yo Modobag! Away!
| Musk Tunnels Wisely Restrict Drivers |
| Amazing Tesla Autopilot Video |
| Mercedes-Benz Autonomous Taxi Fleet In 3 Years |
| President Trump's Wall As Otra Nation Hyperloop |
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