Hornby R30316 RailRoad S&DJR, Class 3F 'Jinty', 0-6-0, No. 20 - Era 2Product Info The 3F 'Jinty' was an LMS tank engine inspired by the design of a Midland Railway designed tank engine. Henry Fowler saw potential in the Midland Railway 2441 Class which itself would prove so dependable that they would last in service until 1966. The Jinty was a simple design with inside cylinders and belpaire firebox that allowed the locomotive to reach up to 60mph. Locomotives were fitted with steam heating for working short passenger