The Orffyreus Wheel by David Niall Wilson
Approx. 79,610 words.
Published on March 2, 2010 by
In 1712, a remarkable man named Johann Bessler invented a wheel that spun after being set into motion until it was stopped with no mechanical input. The Orffyreus Wheel follows his adventures in inventing it, and those of his heir, Elly Kassel, as she fights to keep it from falling into the wrong hands.