In the early days of this site, Cedge, a member then, built just such an engine, almost exactly the same as the one shown here, to my mind, a lot better. He showed a blow by blow warts and all build of each piece, all taken from just an old illustration.
I have tried to search it out but my concentration isn't as good as it used to be. Maybe someone else can find it.
Thanks very much Alan, that is exactly the post I had lost.
Steve (Cedge) and myself go back to the very beginning of this site and he became a very good internet friend, unfortunately we lost track of each other when my body and mind problems got in the way.
It is really surprising what is hidden away on this site, there are many hundreds, if not thousands of builds and tools to make if you have the time to search and know what you are looking for.