That's why a train's capacity to pull heavy weights is as crucial, if not more so, as its top speed. For example, some say that the Union Pacific Big Boy is the world's most powerful steam engine.

A restored steam locomotive built more than 100 years ago is up for sale. The Peckett & Sons 0-4-0T engine - named Marcia - has been kept at the Kent and East Sussex Railway (K&ESR) for over 60 years.

Many of us have seen old steam engine models up for sale at garage sales and various internet auction sites. The problem with these engines is the fact that many of them were sold as rough casting ...