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
Bore: 18mm
Stroke: 38mm
Double Acting Cylinder
Overall Dimensions: 220mm long x 150mm wide x 310mm tall (to top of chimney)
Weight: 1.6Kg
Boiler Capacity max. 80ml.
Boiler Heating: Solid Fuel Tablets.
Scale: About 1:16

The kit is designed so that only hand tools are required to build it. No machining or previous model engineering experience is necessary. Assembly should be easily within the scope of anyone familiar with the use of normal tools.

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 if you wish to solder the Boiler together yourself.