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Yamaha engineer Yoshiharu Nakayama first came up with the idea of creating the first competitive four-stroke race motocross bike. [6] The Yamaha YZ400F was developed to fit into this category. It solved the power dilemma by borrowing superbike technology and giving the YZ a five-valve head, liquid cooling and a 12.5-1 compression ratio.
The first bike manufactured by Yamaha was actually a copy of the German DKW RT 125; it had an air-cooled, two-stroke, single cylinder 125 cc engine [1] YC-1 (1956) was the second bike manufactured by Yamaha; it was a 175 cc single cylinder two-stroke. [1] YD-1 (1957) Yamaha began production of its first 250 cc, two-stroke twin, the YD1. [1]
Henry would race the production version of the prototype four-stroke, the YZ400F, for 1998. This machine started the four-stroke revolution in motocross. He battled through a strong but unspectacular supercross season where he finished 7th overall. The outdoor season would be Henry's chance to show the bike's true capabilities.
The Yamaha WR450F is an off-road motorcycle made by Yamaha Motor Company.It currently has a 450 cc (27 cu in) liquid-cooled single-cylinder engine. First offered in 1998 at 400cc, it shared many components and design concepts with the YZ400F motocross model.
Also: “Temperature is regulated near the same brain real estate that handles sleep,” adds W. Chris Winter, M.D., a neurologist and sleep specialist in Charlottesville, VA and member of ...
The review found people who drank moderately were less likely to die prematurely from any cause than those who never drank alcohol. Moderate alcohol drinking was associated with higher risk of ...
Drinking coffee could extend your life up to two years, new research finds. Regular coffee consumption was found to be associated with increased health span (time spent living free from serious ...
The Yamaha YZ450FX is an off-road performance motorcycle made by Yamaha Motor Company.It currently has a 450 cc (27 cu in) liquid-cooled single-cylinder engine. First offered in 2016 at 450cc, it shared many components and design concepts with both the Yamaha WR450F and Yamaha YZ450F motocross model.