Steam engine plans

http://www.youtube.com/watch?v=f_KaGygrND0&feature=related

http://john-tom.com/ElmersEngines/46_rotary.pdf

http://john-tom.com/  steam engine plans 

https://www.homemodelenginemachinist.com/threads/design-of-a-simple-model-steam-engine.19357/#post-311774

links
Machine design