It’s a performance clout you’ll appreciate when in the free-way passing lane, climbing hills, or long distance touring with luggage and/or a passenger. New for 2012 is the slightly larger Twin Cam 103™ engine delivering more pulling torque. Its Electronic Sequential Port Fuel Injection jetting gives crisp, lively throttle reaction. And it comes at lower cruising rpm – you’ll experience less engine vibration, ride more smoothly and enjoy better highway fuel economy. The 2010 Fat Boy Lo motorcycle is a new riff on one of the greatest hits to ever roll out of the Harley-Davidson design studio. Darker and lower than that original icon of fat-custom style, the Fat Boy Lo retains the bold presence of the Fat Boy while offering a fresh interpretation of the motorcycle that still defines the segment. The lowered centre of gravity makes the Harley-Davidson Fat Boy Lo a breeze to control and manoeuvre. Features like rear suspension and optional ABS concealed under its customized close fenders maintain its “slammed” boulevard cruiser image!

Robert Oppenheimer held conferences in Chicago in June 1942, prior to the Army taking over wartime atomic research, and in Berkeley, California, in July, at which various engineers and physicists discussed nuclear bomb design issues. They chose a gun-type design in which two sub-critical masses would be brought together by firing a "bullet" into a "target". [1] Richard C. Tolman suggested an implosion-type nuclear weapon, but the proposal attracted little interest. [2] Bowen, Lee (1959). Vol. I, Project Silverplate 1943–1946 (PDF). The History of Air Force Participation in the Atomic Energy Program, 1943–1953. Washington, D.C.: U.S. Air Force, Air University Historical Liaison Office. Archived from the original (PDF) on 22 February 2014 . Retrieved 28 July 2013.Hewlett, Richard G.; Anderson, Oscar E. (1962). The New World, 1939–1946 (PDF). University Park: Pennsylvania State University Press. ISBN 978-0-520-07186-5. OCLC 637004643. Archived (PDF) from the original on 27 February 2012 . Retrieved 26 March 2013. Serber, Robert; Crease, Robert P. (1998). Peace & War: Reminiscences of a Life on the Frontiers of Science. New York: Columbia University Press. ISBN 9780231105460. OCLC 37631186. Harley-Davidson Fat Boy 30th Anniversary Unveiled". UltimateMotorcycling.com. Ultimate Motorcycling. 3 February 2020 . Retrieved 18 February 2020.

In the mid-1970s, mechanical engineer Bill Davis designed and built a predecessor to the Softail and patented the design in 1976. [8] Davis sold his patents, prototype, and tooling to Harley-Davidson in January 1982. [9] The Fat Boy was one of numerous Harley-Davidson models built on the Softail frame.

By Harley standards, it is not a heavy bike, the 330 kg’s (727 lbs) is greatly moved about and mastered again due to it’s low centre of gravity (all the weight is close to the ground versus a sport bike where engine and weight are positioned higher) and low, low seat.