The 4″ scale Burrell Roller A brand new engine from Steam Traction World a stunning engine and a right rarity on the rally field, a 4″ (1/3rd) scale Burrell Roller. Weighing in at 600kg* with a working differential and the
Super Rollout
![Super Rollout steam roller engine kit](https://www.steamtractionworld.com/wp-content/uploads/2021/02/roller-engine-kit-750x350.jpg)
The 4″ scale Burrell Roller A brand new engine from Steam Traction World a stunning engine and a right rarity on the rally field, a 4″ (1/3rd) scale Burrell Roller. Weighing in at 600kg* with a working differential and the