Hornby R30171 RailRoad Plus Enhanced Livery Metro Train Class 110 2 Car DMU Train Pack E52075Hornby R30171 RailRoad Plus Metro Train Class 110 2 Car Train Pack E52075 Engineered to deal with the steep gradients of the Calder Valley route which it became synonymous with them being named 'Calder Valley sets', the Class 110 was one of the first DMU's with the highest power to weight ratio of any naturally aspirated unit. In 1982 the middle trailer car was removed from most sets to reduce maintenance costs and further improve acceleration along