air cooled

Spec Showdown: Harley-Davidson Sportster S Vs. Indian Scout

by Dustin Wheelen from https://www.rideapart.com An American middleweight melee. For decades, the Harley-Davidson Sportster dominated the American middleweight V-twin class, mostly by dint of being the only American middleweight V-twin. Without a top contender to challenge its reign, the Motor Company only issued modest upgrades since 1986. However, that all changed when the Indian Scout burst onto the scene in 2015. Heavily based on the Victory Octane, the revived Scout paired Indian’s rich heritage with thoroughly modern equipment. The liquid-cooled, DOHC, 1,133cc V-twin was the antithesis of Harley’s ancient air-cooled Evo engine. Compared to the Sportster’s signature teardrop tank and engine cooling fins, the Scout’s low-slung stance and neo-bobber aesthetic presented a viable alternative to Harley’s aging platform. Facing a formidable foe and new emissions regulations, the Bar and Shield telegraphed its counterpunch when it revealed the Custom 1250 in July, 2018. Nearly three years later, that haymaker finally landed when Harley officially announced the 2021 Sportster S. Complete with a liquid-cooled, DOHC, 1,252cc V-twin, the new Sportster’s spec sheet now stands toe-to-toe with the Scout. Of course, we won’t know who wins the battle in the showroom until the Sportster S arrives at dealerships. For now, however, the tale of the tape tells a fascinating story. Overview 2021 Harley-Davidson Sportster S – Vs – 2021 Indian Scout Middleweight Might Featuring Harley’s shiny new Revolution Max 1250T, the 2021 Sportster now produces 121 horsepower and 94 lb-ft of torque. While the Scout previously set performance benchmarks for the category with 100 horsepower and 72 lb-ft of torque, Indian’s entry cruiser now looks outgunned. Of course, the Revolution Max V-twin touts a larger displacement, which helps the Sportster S steal that performance feather from Indian’s cap. On top of that power deficit, the Scout lugs around 59 extra pounds, weighing in […]

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Harley Developing V-Twin With Variable Valve Timing

Seems there’s still some life left in the air-cooled pushrod engine. Despite launching the LiveWire electric bike and entering a new performance echelon with the 145-hp, water-cooled Revolution Max engine, Harley-Davidson’s future is still firmly pinned on its traditional air-cooled, cam-in-block V-twins—and the firm is developing a completely new engine that ticks those familiar boxes. New patent applications from the firm reveal that it’s developing a completely new air-cooled, pushrod V-twin that combines old-school appearances with modern technology including variable valve timing. CLICK HERE TO READ THIS ARTICLE ON BIKERNET Join The Cantina – Subscribe Today https://www.bikernet.com/pages/custom/subscription.aspx

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Vagabund V12 BMW R100 RT May Looks Like a Monster, But It’s Fully Street Legal

by Daniel Patrascu from https://www.autoevolution.com The now defunct BMW R100 line, debuted by German bike maker BMW in 1976, went down in history as the last line of the air-cooled airheads produced by the Bavarians. While on the market, the family included a wide variety of models, and enough of them were made over the years for the breed to still be around today. Most of the R100s now in existence are closer to the scrap yard than an actual road, however. But that’s how we see them, because custom garages have an entirely different view of the bike’s potential. We’ve already seen what the French can do when they get their hands on such two-wheelers when we talked about builds like the Blitz Naso Nero, or the Black Ops, or the Green Beret. But how about an Austrian take on the R100? A local shop that goes by the name Vagabund has an entirely different approach than the French when it comes to converting Bimmer bikes. Instead of tracking down parts and adapting them for whatever build they’re working on, Vagabund went the high-tech way and turned to 3D printing. The motorcycle you see in the gallery above once was a 1994 BMW R100 RT, but careful tuning and customizing turned it into something called V12. And despite its menacing looks, the build is “100% street legal.” Completely different than what BMW had in mind when it first made this motorcycle, the V12 features a host of 3D-made parts: the fork cover (with integrated turn signals), rear end, handlebar controls, housings for indicator lights and headlight, all have been created from scrap and to exact specifications to fit the bike. All these elements, although quite visible, do not however stand out as much as the rear wheel, completely covered

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Veloce Publishing new Kawasaki Book

The story of the air-cooled ‘big’ Kawasaki bikes in definitive detail, researched and written in Japan with the full co-operation of the factory. This series of models put the company on the map during the sixties and seventies, helping it to survive a difficult era that saw hundreds of Japanese motorcycle makers reduced to just four. Successful immediately, these models defended Kawasaki’s honour on the tracks as well as in the showrooms, handing the company numerous world championship titles. The series was recently revived as part of a retro boom, and a new machine has been launched, delivering the same thrill and charm as its predecessors. Book Title: Kawasaki W, H & Z – The Big Air-Cooled Machines Author Name: Brian Long Features • Definitive history of the early air-cooled Kawasakis. • Sales in all major markets covered in detail. • Written by a recognized author and historian. • Racing exploits covered year-by-year. • Written with the full co-operation of the factory. • Handy reference charts throughout. • Detailed production figures, including exports. • Unravels what is indeed a very convoluted story. • Contemporary photography to help owners with authenticity issues. • The author is an owner of vintage motorcycles. Description The definitive history of the big air-cooled Kawasakis, from little known machines hardly seen outside Japan to the early Zs that took on the world. The book covers all major markets and uses stunning contemporary photography gathered from all over the globe to help owners establish authenticity or simply take a trip down memory lane. Synopsis The story of the air-cooled ‘big’ Kawasaki bikes in definitive detail, researched and written in Japan with the full co-operation of the factory. This series of models put the company on the map during the sixties and seventies, helping it to survive a

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