Goal
Provide automobile propulsion using a steam engine that can burn a wide range of combustible liquids, offering an alternative to conventional internal-combustion power.
Problem
Reliance on gasoline-powered internal-combustion engines; desire for an alternative power source that can use various fuels and exploit the efficiency of steam generation.
Concept Summary
A conventional 1963 Ford Falcon was fitted with a custom water-tube boiler and steam engine. The boiler uses inclined tubes with a curved upper bank to separate water from steam efficiently. The system burns almost any combustible liquid, generates high-pressure steam, and drives the vehicle in a manner comparable to the original gasoline engine.
Detailed Description
Edward Pritchard designed a water-tube boiler consisting of two banks of inclined tubes. The lower bank carries heated water upward to a vertical header; steam rises into a second header and then into the upper bank, whose tubes curve downward near the top. This geometry causes steam to separate from water droplets, improving steam purity and boiler efficiency. The boiler is heated by combustion of a combustible liquid (e.g., gasoline, oil, wood pellets) in a furnace. The generated steam powers a conventional steam engine coupled to the drivetrain of a 1963 Ford Falcon, allowing the car to operate similarly to its original gasoline version. Historical footage and newspaper reports document the vehicle's operation in Melbourne traffic during the early 1970s.
Principles
- Thermodynamics (Rankine cycle)
- Phase change (water -> steam)
- Heat transfer (conduction, convection)
- Fluid dynamics (steam-water separation)
- Inclined tube geometry for droplet separation
Scientific Domains
Materials
- Steel (boiler tubes and headers)
- Copper (potential heat-exchange surfaces)
- Water
- Combustible liquids (e.g., gasoline, oil, wood pellets)
- Cast iron (engine components)
Mechanisms of Action
- Combustion of liquid fuel heats water in a water-tube boiler
- Steam generated under pressure is directed to a piston-type steam engine
- Engine converts steam expansion into rotary motion for vehicle propulsion
- Inclined and curved tubes promote separation of steam from residual water
Energy Sources
Applications
- Automotive transport
- Stationary power generation (via steam engine)
- Educational demonstration of steam propulsion
Claimed Performance
The steam-powered Falcon "drove about just like any other 1963 Falcon" and "efficiently burned most any combustible liquid".
Experimental Evidence
A YouTube video (https://www.youtube.com/watch?v=LJq2Hc_mXFI) shows the steam-powered Falcon in traffic; newspaper articles from 1972 and 1968 describe the vehicle; a US patent (US2008184944) details the boiler design.
Replication Status
No evidence of additional builds or commercial scaling beyond the original prototype.
Limitations
- Large boiler size and weight
- Long start-up time to generate steam
- Water management and condensate handling
- Fuel handling and emissions compared to modern engines
- Regulatory certification for road use
Red Flags
- Potential safety hazards associated with high-pressure steam and boiler failures
- Lack of modern safety certifications
