There are two body styles which are interchangeable, the Box body and the Dray, being available with either model. In the rear is the gas (Propane/Butane) tank and condenser under the body, lift off the body to fill the tank, gas is then fed to the burner at the base of the boiler. Also available is an optional gas control valve which will prevent the safety valve from blowing by automatically turning the burner down at full pressure and up again when the pressure falls.

Steam is taken from the boiler through the lubricator to the twin oscillating cylinders. These are double acting and the lorry can be stopped, started, reversed and three point turned at will. Exhaust steam is then let to the condenser which will catch the bulk of the oil and wet from the steam, before it is exhausted through the tail pipe or chimney.

The cylinders drive through gear and chain reduction to the rear axle which is equipped with a fully working differential. Both axles are fully sprung with working leaf springs. Two channel radio control works the servos mounted behind the boiler under the chassis, one controlling the steering and one the engine speed and reversing. The boiler is equipped with pressure and water gauges and will run for approximately 35 minutes before the gas tank, boiler and lubricator need filling. The cab roof is easily removed to give access to the boiler filler.