The Ballast Spreader

This unusual-looking machine appears in one illustration in Small Railway Engines. It is a complicated machine used for replacing old ballast on the Fat Controller's Railway. It is painted bright yellow and carries the words "SODOR CHAIN LOAD UNDERCUT" on its side. Unusually, it appears to be wearing glasses in the illustration.

It is also known as the Sodor Railway Repair Train. However, this title is technically inaccurate (it belongs to the North Western Railway, not Sodor Railway, and is not strictly used for repair as such). It originates with the model of the character produced by Learning Curve.