When the railway re-opened again it needed a lot of work done to it to fix things and update it. They bought two more steam locomotives from Corris Railway in 1951. They were named "Sir Haydn" and "Edward Thomas". In 1951, "Sir Haydn" became the first new locomotive to travel on Talyllyn Railway in over 80 years. It derailed a lot because the Talyllyn Railway was slightly wider than the Corris Railway. Eventually this was fixed by changing the width of the railway and changing parts of the locomotive wheels. The "Edward Thomas" needed a lot of service, but it was too expensive to fix. A man who was on the Preservation Society board of directors, John Alcock, had his company, the Hunslet Engine Company fix it for free.