Build · 2025-07-21
Linear-to-rotational output converter
The question
Can the free-piston engine's linear stroke be turned into rotary output with a compact converter instead of a diaphragm alternator?
The answer
Open. Testing in progress.
- Kind
- Build
- Status
- Concept
- Date
- 2025-07-21
Video
What it is
Concept for taking rotary power off the free-piston rig, the step toward replacing the heat-limited diaphragm coupling.
Results
None yet.
Related
Does the design still work scaled to 3 feet?Yes. It runs at 3 ft, and it's the channel's most-watched build.See more →Can it survive a campfire and still make power?Yes. 30–34 V open-circuit on a blowtorch, 45 V peak. Watts under load: still open.See more →Can a custom engine win SBC 2023?Yes. It won the contest.See more →
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