News of the world of motorcycling > 2008 Buell 1125R

9 Мар 2015 | Author: | Комментарии к записи News of the world of motorcycling > 2008 Buell 1125R отключены
Buell XBRR

Buell 1125R: The no-excuses sportbike from the U.S. of A.

by Riles and Nels

Over the Buell engineers have the Harley-Davidson Sportster engine recognition, refining it and extracting power. They came up innovative solutions to vibration and issues. Then, with the XB they made their even more unique by the fuel in the frame, the oil in the swingarm and the wheelbase ultra-stubby.

And lots of wondered, This is interesting but when is Buell going to a sportbike with a more liquid-cooled engine?

And lots of wondered, This is interesting but when is Buell going to a sportbike with a more liquid-cooled engine?

The answer is and the motorcycle is the Buell 1125R.

It’s been a long coming, said Paul director of product communications for and Harley-Davidson.

Development of the 1125R four years ago. Buell, now a wholly owned of Harley, got the go-ahead to look the company for a new powerplant, several were considered. But the choice narrowed to BRP-Rotax.

The Austrian has built motorcycle engines for and BMW, as well as engines for watercraft, snowmobiles, and other

More importantly, said Buell, the Austrian company was to work with Buell to a new engine from scratch for the The fit felt right, he said. In one of Rotax’s lead engineers in on the Buell project had worked at as a college intern.

Buell set parameters for power and weight (but not displacement) and designed an engine to meet the The result is the Helicon engine, a V-twin (unlike the 60-degree Rotax built for the Aprilia or the 90-degree twins found in Buell engineers wanted the of the V to be as narrow as possible, to allow flexibility for positioning in the frame, but enough to allow a straight from the throttle bodies the combustion chamber, and 72 degrees out to be the magic number.

The fuel system uses two huge, throttle bodies. Buell the four valves per cylinder as as possible, even using the available spark plug to up less space. The engine is mounted in the frame, so three are used to control vibration.

Buell claims output of 146 at 10,500 rpm, measured at the and 82 foot-pounds of torque.

The Helicon is a dry-sump unit, but Rotax an oil tank onto the left of the engine, so although the swingarm a family resemblance to the XB line, it not do double duty as an oil tank.

Buell XBRR

the 1125R’s frame resembles the and still holds the fuel, but all new. Fuel capacity is to 5.6 gallons and ducts in the frame hot air that has passed through the radiators into the engine and away from the rider.

Also worth a mention on the engine is the clutch, which engine vacuum to reduce pull effort and to provide back-torque-limiting effect. You can feel the by pulling the clutch lever the engine off, then it again with the engine Similarly, closed-throttle deceleration engine vacuum that the clutch clamp load.

an entirely different approach your typical, mechanical clutch, but Buell engineers say it has the of using a free power the engine vacuum.

Buell us the chance to try the bike on a two-day on the street and on the track at Mazda Laguna Seca. Unfortunately, due to a poorly timed case of …, I missed virtually all of the ride.

The first thing that’s when I sit on the Buell is that the are more relaxed than sportbikes today. Leg room is and the handgrips are not punishingly low.

is first and foremost a streetbike, James, and before anyone crafting crazy plans a Buell team in AMA Superbike, that planning for the 1125R two years before talk of 1,200cc twins into class. The 1125R was not designed to be a for a Superbike race effort.

the engine, and the sensation is both change and reassuring familiarity. is the over-caffeinated vibration of the air-cooled, V-twin at idle in the other But this still feels a V-twin. Still feels a Buell.

It’s a little more in feel than the humming in the sporting class.

Buell XBRR
Buell XBRR
Buell XBRR
Buell XBRR
Buell XBRR
Buell XBRR
Buell XBRR


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