See More Radial Engines at: www.flickr.com/photos/15794235@N06/sets/72157636169553994/ See Our Model Engine Collection at: www.flickr.com/photos/15794235@N06/sets/72157602933346098/ Visit Our Photo Sets at: www.flickr.com/photos/15794235@N06/sets Courtesy of Paul and Paula Knapp Miniature Engineering Museum www.engine-museum.com