A model of Trevithick's Dredging
Engine. In 1806, following on from his 'Puffing Devil' in 1801 and the
Penydarren Locomotive in 1804, Trevithick built a steam dredger for use on
the River Thames using his 'strong steam' engine.
This model is similar to the full
size original engine on display at
the Kensington Science Museum
and is designed to operate as a live steam model. It can also be operated by
compressed air if you wish.
Model Basic Specifications:
Operating Pressure: Less than 5psi
Double Acting Cylinder
Overall Dimensions: 220mm long x 150mm wide x 310mm tall (to top of chimney)
Boiler Capacity max. 80ml.
Boiler Heating: Solid Fuel Tablets.
Scale: About 1:16
The kit requires no machining but
the boiler does require some soft soldering. The two brass end caps need to
be soldered into the brass boiler tube and two M6 nuts need to be soldered
onto the boiler body. It should not be too difficult to build by anyone
with average tool skills.
The tools required are: Small Vice,
Small Hacksaw, Screwdriver, Pliers, Wire Cutters, Centre Punch, Hammer,
Files, Drill and Drill Bits. A solder torch is required to solder the
To build the model, the constructor
will need to screw, glue, saw, drill, file and cut various small -
mainly brass parts. The Boiler requires soldering.