About
One builder, three labs.
Long Earth Society is where I publish what I build and test: free-piston and thermoacoustic Stirling engines that turn heat into electricity, mead batches logged like experiments, and software projects with their results. Every entry starts with a question and ends with the data, including the failures.
Who
I'm Travis Seamon. By day I run environmental, health and safety programs for large transportation operations; before that I worked in aviation, space launch, electric vehicles and manufacturing, on projects that included liquid hydrogen, additive manufacturing and prototype chemical batteries. I'm also a paramedic. None of that makes me an engine designer or a brewer, which is the point of the site: these are real experiments by a careful amateur, measured honestly.
How the lab entries work
- Every entry is a question. "Can a thermoacoustic engine survive a campfire and still make power?" The answer is whatever the test showed, with the numbers.
- Failures are published. An aluminum spool that braked the magnet, a trading bot that broke even, a valve that destroyed several diaphragms. Negative results are results.
- Data is downloadable where it exists. Logs, batch records and the live model scoreboard come as CSV.
- Some things are sold, not published. Technical drawings, the ceramic stacks and finished engines are in the Etsy shop. Specs that would let someone rebuild a product stay out of the posts.
Where else
- YouTube: LES Thermodynamics, the build and test videos behind the engineering lab.
- Etsy: Long Earth Society, engines, stacks, parts and drawings.
- Discord: the community, where questions get picked and experiments get requested.
Contact
The fastest way to reach me is Discord. For anything about a purchase, use Etsy messages on the order.
Using what's here
Quote or cite anything on the site with a link back. Photos, diagrams and data are mine unless credited otherwise; ask before reusing them commercially. Nothing here is engineering, medical, legal or investment advice. Engines get hot and brewing involves pressure; if you build or brew from these notes, you're responsible for doing it safely.