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Animated Tumblebugs On Astounding Cover!
One of my favorite items from my (ahem) vast list of technovelgy is the tumblebug from The Roads Must Roll (1940) by Robert Heinlein:
(Heinlein tumblebug from Astounding SF June 1940)
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.
X commentator SMOF_ has been playing around with AI to animate static science fiction art - with gratifying results!
Bonus #7 - The Roads Must Roll pic.twitter.com/bAaTRBUX9N
— Secret Master of Fandom 🇺🇸 (@SMOF_) September 2, 2025
I love the tumblebug idea and have written dozens of articles on real-world implementations of the basic idea- enjoy!
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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!
- InMotion Glide 3 Electric Unicycle For The Last Mile
- Electric Unicycle Is A Tumblebug
- InMotion V11 Electric Unicycle Gets Air (Video)
- Electric Monocyle Tumblebug Available On Alibaba
- When Will I Get My Unipod Gyro Balanced Personal Vehicle
- More Like A Tumblebug Than A Motorcycle
Scroll down for more stories in the same category. (Story submitted 8/5/2025)
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