Mr. Hubbard built this steamcycle in the early 1970's.  He was however following a two-part article published in The Model Engineer and Electrician published in April of 1918!  This article is entitled A Design of a Steam Motor Cycle and was authored by Thomas Hindle.  The paper described in detail the construction of a steam motorcycle and included drawings and construction data. From a careful reading of the paper it is apparent that Hindle never actually built this motorcycle himself! It appears to be a paper exercise.  More than 50 years later, Bud Hubbard turned this design exercise in reality.   Therefore, all of the post-construction troubleshooting was left to Mr. Hubbard himself.  It is a testimony to the skills of Arthur "Bud" Hubbard that he 1) built this in the first place and 2) did extensive testing and improvements to his design to actually get it running on steam.  Mr. Hubbard kept a notebook that chronicled both the construction of the steamcycle and it's later testing and modifications.  His notes exemplify inventive spirit and clearly show the interative process involved in building anything mechanical.