April 10th, 2009, 07:00 PM | #1 |
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[motorcyclistonline] - 2009 Yamaha YZF-R1 - The Game Changer
2009 Yamaha YZF-R1 - The Game Changer
Yamaha's Crossplane Crankshaft Changes EverythingSome of these extra pounds can be traced to the Crossplane powerplant. The 90-degree crank demands a counter-rotating balance shaft to dampen its inherent vibrations, adding weight and sapping power by an estimated 3 percent. The new exhaust weighs more, too, at least on U.S.-spec bikes that require an additional mechanical baffle to comply with our more restrictive noise limits. Yamaha preemptively warned us that American-spec R1s will make about 6 fewer horsepower than European models due to this choked-up exhaust and a mild ECU change. "Paging Chuck Graves..." Photo Gallery: 2009 Yamaha YZF-R1 - Motorcyclist Magazine Photo Gallery: 2009 Yamaha YZF-R1 - Motorcyclist Magazine Read More | Digg It | Add to del.icio.us Click here for full story...
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