Yamaha WR tech info
Yamaha WR description
2013 Yamaha WR250R, The Yamaha WR250R is a direct descendent of the WR250F a rugged motorbike designed only for off road. Unlike its sibling the WR250R has a more serene character and can be used without problems for both street and dirt riding.The first street legal Yamaha WR250R was launched in 2008 and since then it continued to impress the dual purpose bike lovers with its superior performances.After four years, the WR250Rs design remained almost unchanged and all you get for 2013 is a new set of graphics. Help the bike deal with harsh terrains with poise, Yamaha gave it a special asymmetrical swingarm which comes with cast aluminum crossmembers, extruded arms and a 22mm rear axle. Furthermore a fully adjustable 46mm fork provides 10.6 inches of wheel travel.The bike features a competent alloy chassis which is combined with a reliable 250 cc liquid-cooled DOHC engine. The engine is combined with two titanium intake valves and two steel exhausts.250cc liquid-cooled, DOHC engine with two titanium intake valves and two steel exhausts, forged piston and plated cylinder for outstanding durability.Pentroof combustion chamber with downdraft-type straight intake helps make excellent power across the rev band, with maximum power at 10,000 rpm.First use of fuel injection on a 250 Yamaha on/off-road bike. The system relies on input from a crank sensor, intake air pressure sensor and throttle position sensor feeding a compact ECU to provide optimum combustion.An ECU-controlled EXUP exhaust valve, along with an electronic intake control valve, broadens the powerband.High lift cams have WPC surface treatment in which the surface is sprayed with fine powder at over 100 meters per second to increase surface hardness.Three-axis engine layout keeps the engine compact. Wet sump tucks between frame rails to keep the engine height down.Rare earth-type ACM alternator keeps the weight down while providing all the current needed to run the FI and lighting systems.Direct ignition coil sits atop the spark pluganother first on a Yamaha on-off road model.Six-speed gearbox provides a wide spread of ratios, with shower-type lubrication for reliability. A special light-action clutch makes shifting a snap.Tucked-in, three-chamber muffler helps keep mass centralized and the bike quiet.Electric start only: Leaving off the kickstarter keeps it light and simple.
Yamaha WR for Sale
- 2013 yamaha wr450f (US $)
- 2014 yamaha wr450f (US $)
- 2013 yamaha wr250 f ($6,990)
- 2013 yamaha wr250 f ($5,794)
- 2013 yamaha wr250r ($5,999)
- 2014 yamaha wr250r ($5,999)
Moto blog
Infamous Canadian Motorcyclist Found Not Guilty in 186-mph Highway Stunt
Fri, 25 Oct 2013We don’t know if this is a case of a guilty man going free or of a braggart facing trial for something he didn’t do. Either way, Randy Scott, 26, was found not guilty of a Trans-Canada Highway run at 299 km/h in April 2012. The viral YouTube video of a Yamaha R1 rider weaving in and out of traffic was used by police to track down Scott with the help of a concerned neighbor’s tip.
Isle of Man TT 2012: Sidecar TT Race 1 Results
Mon, 04 Jun 2012Dave Molyneux won his 15th career Isle of Man TT race with a victory in the first Sure Sidecar TT race of the 2012 festival. The win comes in Molyneux’s return to the Isle of Man TT after sitting out last year’s competition. By far the most successful Sidecar racer in TT history Molyneux is third overall among riders in any class, behind Joey Dunlop (26) and John McGuinness (18).
WSBK: 2011 Utah Results
Tue, 31 May 2011Carlos Checa extended his lead in the 2011 World Superbike Championship, winning both races at Utah’s Miller Motorsports Park. The Althea Ducati racer recorded his second double of the season and now has six wins in ten races. Checa also scored the double in Utah in 2008 when Miller Motorsports Park made its debut on the WSBK calendar.
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