C152 & C172 Engine Explorer

An interactive 3D study model of the Lycoming engines in the Cessna 152 (O-235-L2C), 172P (O-320-D2J) and 172S (IO-360-L2A).

• Explore: orbit the engine and click any part for what it is, how it works and pilot's notes. Includes X-ray, section cuts, air/fuel/exhaust/oil flow, an exploded view, and parts you can pull off by hand.
• Run-up: a run-up simulator with gauges, magneto checks, carb heat, engine sound and practice faults to diagnose.
• Teardown: a 17-step guided teardown in a mechanic's order, from the propeller to the crankshaft.

The whole site is one file, index.html. It loads three.js from jsDelivr and fonts from Google Fonts, so there is nothing to build.

Publish on GitHub Pages

1. Push this repository to GitHub with index.html at the root of the main branch.
2. On GitHub, open the repository's Settings → Pages.
3. Under Build and deployment, set Source to Deploy from a branch, pick main and / (root), then click Save.
4. After a minute or two the site is live at https://<your-username>.github.io/<repository-name>/.

The empty .nojekyll file tells GitHub Pages to publish the files as they are, without running Jekyll. Pages is free for public repositories; a private repository needs a paid GitHub plan.

Run it locally

Open index.html in a browser. It needs an internet connection for three.js and the fonts.

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For study only. Figures come from Lycoming manuals and data sheets and from Cessna POH and checklist extracts; the POH for the specific airplane always governs.