Cycle World Podcast

The motorcycle gearbox can be a great mystery but Kevin Cameron is here to help us all understand how it works. Why do we have six-speeds and constant mesh (mostly)? Kevin and Mark Hoyer also divert into DCT, helical gears vs. spur, and how to make your dogs happy. Join them for another Cycle World Podcast.

Honda made a big impression with its close-firing-order "big bang" NSR500 and became dominant in two-stroke 500cc Grand Prix racing through the 1990s, replacing the "screamer" engine. Other factories followed suit. But firing order on four-strokes also plays a huge role in how an engine works and how it relates to the rider and to traction. How? Join Cycle World Technical Editor Kevin Cameron and Editor Mark Hoyer as they talk about Big Bang, Yamaha Crossplane, "Twingles," and the all-important "MORE"!

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.

The inline-four has many qualities that made it the performance engine format of choice for decades. Ride with Kevin and Mark as they talk about the origins of the inline-four and how we have explored many other engine formats and firing orders/timings, and possibly a few side stories about other things!

We just want to light the fire, that's it! Kevin and Mark dive into all the different ways internal combustion engine builders have found to light the combustible air/fuel mixture. There has been spark, open flames(!), a thing called "hot tube" and more. Even compression can light off the charge, and we'll talk about that too. From magnetos to coil and points to fully electronic coil-on-plug ignitions with upward of 60,000 volts, we try to cover it all. Join us for the latest Cycle World podcast!