Demonstration on how to fold the paper bellow for the pneumatic power system shown in the radial air engine video.
Plans are available at JEPLANS.COM
http://jeplans.com/Catalog/Catalog2.php?targp=JECAT&JECAT=AirEngines#PPS101
Simply click "DOWNLOAD PLAN!!" under Pneumatic Power System 1. Then click "I Agree, Download plan".