Peter's Model Railroading | Articles | N-scale | Arnold S2
Introduction

The S2 was a yard switcher built by Alco (American Locomotive Company). The Pennsylvania Railroad acquired their first S2 in 1950. Their engines were rated at 1000hp. The PRR class was AS10 (Alco, switcher, 1000 horsepower). During WWII, Alco was designated as the main company for building yard switchers, so most railroads wound up with either an S1 or an S2. They were very reliable and many survive even to today (source: Model Railroader Magazine, March 1984, pg. 33). The Arnold model was released in 1991, with "Rapido" couplers and very large wheel flanges. It is a very nice model. The model weighs 2.3 oz (66g). I bought my Arnold S2 decorated for the PRR, road number 5660, in September 2000.