Wheels Of Grace Magazine

Volume 12, Issue 3

Issue link: http://cp.revolio.com/i/1387148

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10 | WheelsOfGrace.com | #55 The Harley-Davidson® Pan America™ 1250 and Pan America™ 1250 Special models are powered by the all- new Revolution® Max 1250 engine, a liquid-cooled V-Twin designed to offer flexible, engaging performance with a broad powerband that builds to a rush of high-RPM power surging through the redline. The Revolution Max 1250 engine has been tuned specifically to deliver desirable power characteristics for the Pan America 1250 and Pan America 1250 Special models, with an emphasis on smooth low-end torque delivery and low-speed throttle control applicable to off-road riding. "Through its history Harley-Davidson has embraced technological evolution while respecting the heritage of our brand, with engines that produce real-world performance for real-life riders," said Harley-Davidson Chief Engineer Alex Bozmoski. "The Revolution Max 1250 is a clean-sheet, advanced-design effort that will carry Pan America riders over new horizons with reliability, efficiency, and exciting performance." A focus on performance and weight reduction drove both vehicle and engine architecture, material choices, and aggressive component design optimization. To minimize overall motorcycle weight the engine is integrated into the vehicle as the central member of the chassis. The use of lightweight materials helps achieve a desirable power-to-weight ratio. The Revolution Max 1250 engine is assembled at the Harley-Davidson Pilgrim Road Powertrain Operations facility in Wisconsin. HARLEY-DAVIDSON REVOLUTION MAX 1250 ENGINE IS TUNED FOR ADVENTURE All-New Liquid-Cooled V-Twin to Power Pan America 1250 and Pan America 1250 Special Revolution® Max 1250 Engine Displacement: 1250cc Bore x Stroke: 4.13 in. (105 mm) x 2.83 in (72 mm) Horsepower: 150hp Peak Torque: 94 ft. lbs. Peak RPM: 9500 Compression Ratio: 13:1 Revolution® Max 1250 Engine Technical Features include: • V-Twin Architecture* • Optimized Design for Light Weight* • Stressed Member Powertrain* • Liquid Cooling* Offset Connecting Rod Journals* The two crankshaft connecting rod journals are offset by 30 degrees. Harley-Davidson leveraged its extensive experience in flat track racing to help inform the cadence of Revolution® Max 1250 engine power pulses. Forged Aluminum Pistons Piston crowns are machined for precise control of compression ratio. The 13:1 compression ratio improves engine torque at all speeds. This high compression ratio is made possible by advanced knock detection sensors. The engine will require premium-grade (91 octane) fuel to make maximum power, but will run on lower-octane fuel and is protected from detonation by the knock sensor technology. The base of the piston is chamfered so no piston ring compression tool is required for installation. The piston REVOLUTION REVOLUTION REVOLUTION HARLEY-DAVIDSON

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