{"podcast":{"title":"Cycle World Podcast","slug":"cycle-world-podcast-6850183","podcast_index_feed_id":6850183,"rss_url":"https://anchor.fm/s/f21971c8/podcast/rss","website_url":"https://www.cycleworld.com/","image_url":"https://d3t3ozftmdmh3i.cloudfront.net/staging/podcast_uploaded_nologo/40517538/40517538-1708031741773-291ca4fee196.jpg","author":"Cycle World","episode_count":122,"summary":"Join Technical Editor Kevin Cameron and Editor-in-Chief Mark Hoyer for the weekly Cycle World podcast for lively conversations about motorcycles and the people who build and ride them. Cameron’s legendary knowledge and ability to describe highly technical subjects in ways that are easy to understand allies with Hoyer’s massive testing background and hands-on work in the CW garage.","last_synced_at":null,"page_url":"https://stenobird.com/podcast/cycle-world-podcast-6850183"},"episode":{"title":"Why did the \"Normal\" valve win? Poppet valves vs. Sleeve Valves vs. Rotary valves.","slug":"why-did-the-normal-valve-win-poppet-valves-vs-sleeve-valves-vs-rotary-valves","published_at":"2026-02-25T17:02:32+00:00","page_url":"https://stenobird.com/podcast/cycle-world-podcast-6850183/why-did-the-normal-valve-win-poppet-valves-vs-sleeve-valves-vs-rotary-valves","show_page_url":"https://stenobird.com/podcast/cycle-world-podcast-6850183","url":"https://podcasters.spotify.com/pod/show/cycle-world/episodes/Why-did-the-Normal-valve-win--Poppet-valves-vs--Sleeve-Valves-vs--Rotary-valves-e3fjn3h","audio_url":"https://anchor.fm/s/f21971c8/podcast/play/116038193/https%3A%2F%2Fd3ctxlq1ktw2nl.cloudfront.net%2Fstaging%2F2026-1-25%2F418815023-44100-2-7873200812ead.mp3","summary":"There have been many engine valve designs since the dawn of the internal combustion engine. What made poppet valves stick? (See what we did?) There were many other designs and some, like the sleeve valve in the Bristol Centaurus WWII radial aircraft engine, that worked very well. Classic Kevin Cameron stuff here as he and Mark Hoyer discuss the relative merits of engine valve types.","meta_description":"There have been many engine valve designs since the dawn of the internal combustion engine. What made poppet valves stick? (See what we did?) There were m…","key_points":[],"chapters":[],"topics":[],"duration_seconds":4166,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/cycle-world-podcast-6850183/episodes/why-did-the-normal-valve-win-poppet-valves-vs-sleeve-valves-vs-rotary-valves/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/cycle-world-podcast-6850183/why-did-the-normal-valve-win-poppet-valves-vs-sleeve-valves-vs-rotary-valves.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}