The Oak Park IL Society of Model Engineers,

I photographed this digital live sound video recently, during a May operating session at the Oak Park Society of Model Engineers H.O Scale Model Railroad Club.

One of My good friends and fellow club members Alex, owns and operates this early 1900's era Bachman Spectrum Series Baldwin 4-6-0 Ten Wheeler steam locomotive, wearing the markings of the former Chicago & NorthWestern Railroad.

Seen here, the Chicago & NorthWestern Railroad steam locomotive, is viewed slipping it's drivers, as it begins the climb upgrade to cross the bridge area on the layout representing the Missisippi River.

Real steam locomotives back in the day, would often slip their driving wheels when working under heavy load conditions, or operating in very damp and inclement weather conditions.