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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.
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.
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 ...
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Review sources of guaranteed retirement income, healthcare needs, insurance protections, taxes, and the possible need for long-term care. And don’t forget inflation."Many retirees were caught ...