Sunday, 10 March 2013

Thunder Stroke 111 Engine Powering The New 2014 Indian Motorcycle

Thunder Stroke 111 Engine Powering
The New 2014 Indian Motorcycle
'Honoring our Past, Powering our Future: The Thunder Stroke 111'

From the outset, the goal for the new engine was to capture the iconic design and styling aspects of the 112-year old brand’s most historic models and fuse that heritage with state-of-the-art technology and progressive design elements. Watch as we honor our past and power our future into a new era of Indian Motorcycle.

111 cubic inches
More than 115 ft-lbs of torque
49-degree air-cooled V-Twin
6-speed overdrive transmission

The Thunder Stroke 111 engine features 111 cubic inch displacement and delivers the raw power and iconic styling that have long been hallmarks of the legendary Indian Motorcycle brand. Delivering more than 115 ft-lbs of torque, the 49-degree V-Twin engine imarks the first clean-sheet Indian Motorcycle engine design in seven decades. With parallel pushrod tubes, finned heads, down firing exhausts, left side air intake, and the proportions and layout familiar to Indian Motorcycle fans around the world.
The 1948 Indian Chief was an inspiration for designers. Industrial Design clay model turns drawings into 3-D. and Computer Aided Drafting and stress analysis was extensively used before production testing starts.

The new Thunder Stroke 111 engine has been extensively tested, refined and proven by one of the industry’s most rigorous development and testing programs, accumulating over one million miles of testing, including state-of-the-art dyno testing, and hundreds of thousands of miles of on-road testing. The all-new Thunder Stroke 111 is built in Osceola, Wisconsin at the Polaris Industries Engine Assembly Plant, with future full unit motorcycle assembly taking place in Polaris’ state-of-the-art production facility in Spirit Lake, Iowa.

Engine displacement: 111 cubic inches
Torque: More than 115 ft./lb.
Architecture: 49-degree V-twin, air-cooled with integrated oil cooler, left-side air intake, down firing exhaust system, parallel pushrod tubes.
Crankcase: Unit design featuring a high capacity semi-dry-sump oil system,
oversized oil radiator
Timing system: 3 camshafts, pushrods, 2 valves per cylinder acting through maintenance free hydraulic valve lifters, forged crankshaft
Fuel system: Electronic sequential port fuel injection, electronic throttle control
Compression ratio: 9.5
Transmission: 6-speed overdrive, constant mesh, helical gearbox
Clutch: Low-effort, multi-plate wet clutch, aluminum basket, integral torsional damper.

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