Franz Lager is a retired engineer, who has a lot of time on his hands. He decided to build the world’s largest single-cylinder motorcycle. He took an old NSU Konsul 500, and replaced it’s engine with an 1440 cc airplane engine. Since he wasn’t satisfied with the size, he enlarged it to 2000cc.
The bike has no starter. You can kick-start it, or if you are not Chuck Norris, Franz recommends push starting it.
the original NSU Konsul
more here (in German):http://www.nsu-cars.ch/nsu_2000.htm
I just got the info, that this bike is not the world's largest any more. In fact it was the world's largest for a short time. You can see the largest one (which is not as good looking as this one) here: http://www.winni-scheibe.com/ta_exoten/3_liter_bike.htm . Thanks for the info Ricardo Schmierfinger Roman.