£3,000 - £5,000
An exhibition quality Stuart 6A marine vertical twin cylinder compound steam launch engine. The 6A is the largest engine in the range, being capable of producing approximately 4 bhp at 120 psi whilst running at 750 rpm, enough power to drive an 18' to 22' boat.
It is fitted with Stephenson's slide valve gear, mechanical pump, actioned off the main crank, reverser pole, multiple oiling points, no paperwork or certification