# Harley-Davidson Big Twin, Knucklehead to Now!

An episode of [Cycle World Podcast](https://invisiblenetwork.ai/podcast/1737271114), 10 Dec 2025, 1 h 16 min.

Audio: https://anchor.fm/s/f21971c8/podcast/play/112438930/https%3A%2F%2Fd3ctxlq1ktw2nl.cloudfront.net%2Fstaging%2F2025-11-10%2F414137055-44100-2-1d066cf9d806e.mp3

Harley-Davidson debuted the Knucklehead in 1936 and millions of subsequent Big Twins built in its image continue to "potato-potato" down the road! Technical Editor Kevin Cameron and Editor-in-Chief Mark Hoyer talk about the origins of Harley-Davidson's EL and journey through the Panhead, Shovelhead, and up to the modern era. Think of it as the engine that grew with the American highway system! Join us on the ride!

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