I finally found time to get a year old video on you tube. "2 Cycle Sheffield Track Car Engine - You Tube" Should let you watch a couple of different engines. Today I have a pony engine to do all the cranking but I have not found the right show setup to make a new video. The text on You Tube says it will not play. Just click on it and it will play. Today I am scanning old books and pictures of the Sheffield Car Co. that was located in Three Rivers, Michigan for the Sue Silliman Museum.