Cycle World Podcast

How many Yamaha RD350 crankshafts has Kevin Cameron rebuilt? How many cylinders ported? KC and Editor-in-Chief Mark Hoyer talk about Yamaha’s sporty and quick two-stroke twin, from its origins in the 1960s all the way to the RZ350 of 1985. Hoyer’s first streetbike was a 1979 RD400 Daytona Special—lots to cover. Breathe deep!

The Honda NS500 and NSR500 two-stroke four-cylinder grand prix bikes were hotbeds of innovation and showed exceptional dominance in the hands of genius riders such as Freddie Spencer, Eddie Lawson and, particularly, Mick Doohan, winner of FIVE consecutive world championships in the 1990s. Technical Editor Kevin Cameron has deeply studied the NSR500 and it shows in this podcast—he knows a lot of stuff about a lot of stuff, but two-stroke GP bikes are a strong suit! Listen to him and Editor-in-Chief Mark Hoyer discuss the NSR500, screamer vs. big bang, water injection and lots of other trickery that helped the bike dominate the final seasons of two-stroke GP racing.

75 percent Win Rate! From the first FTR750 engine to the final legal season for the bike and 8 championships, Cycle World was there. Technical Editor Kevin Cameron and Editor-in-Chief Mark Hoyer talk about the origin and development of the motorcycle that dominated American Flat Track since its introductory 2017 season. There is, of course, a deep tech dive, plus all the extras you’ve come to expect!

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Gasoline has a lotta BANG per pound, making it pretty ideal fuel for the motorcycles we love. Technical Editor Kevin Cameron and Editor-in-Chief Mark Hoyer discuss the future of petroleum fuels, synthetic fuels, ethanol and more, plus electric battery storage and the prospects there for motorcycling. Much to cover! Kevin says, "Pounds per horsepower hour," "light molecules" and "heavy sluggish molecules...AND we discuss the 300,000-400,000 pounds of jet fuel an airliner has on takeoff—but not on landing!

Can you imagine a motorcycle universe without the Adventure Bike? But before the 1980 BMW R 80 G/S (Gelände/Strasse) there really wasn't such a thing. Now ADVs have spawned an entire culture of two-wheel adventuring. Technical Editor Kevin Cameron and Editor-in-Chief Mark Hoyer talk about the origins of the BMW GS and its evolution to the new R 1300 GS. Join us on our hour-long adventure!

So much of great-working motorcycle comes down to precise heat management of the engine, tires, gears, brakes, and more. Technical Editor Kevin Cameron takes a deep dive with Editor-in-Chief Mark Hoyer on the many effects of heat and the cascading influence it has on overall motorcycle performance.

Get pre approved on a motorcycle here - https://octane.co/flex/1?a=171

Get Pre Approved on a Motorcycle Here: https://octane.co/flex/1?a=171

The joke goes, "The only way to get suspension to work in the 1970s was to not let it!" We've come a long way, and that was the beginning of the suspension revolution that brings us to today's generally great components and all the world-class stuff going on in racing. Editor-in-Chief Mark Hoyer and Technical Editor Kevin Cameron start with the basic forces at work including what's called V-squared damping (say "ouch!") move to friction dampers and damper rods, and finally get up to the beautiful and easy-to-work on high-performance cartridge dampers on the best bikes of today. And the side stories are almost half the fun. Ride with us!

Metals are absolutely key to our good times on two wheels. Steel, Aluminum, Chromium, Nickel, Copper, Brass, Magnesium ("electrified dirt") and all the alloys make up our most loved form of transportation and good times. As ever, CW Technical Editor Kevin Cameron knows a lot of key details which he shares with Editor-in-Chief Mark Hoyer and the rest of us. Thank you for all the support of the podcast and please let us know in comments what you like and what you don't—but leave Hoyer's headphones out of it... :)

What are opening and closing ramps on a camshaft profile and why are they so important? Why do we use nested or beehive valve springs? When is it best to use pushrod valve actuation or DOHC shim-under-bucket tappets or finger followers? Should we drive cams with gears, chains, or belts? Technical Editor Kevin Cameron and Editor-in-Chief Mark Hoyer (but mostly Kevin...) talk about the intricate details of opening and closing valves and different types of drive systems.