Sunday, January 30, 2011
1804 Pen - Y - Darren Re Post
Here are some images of my scratchbuilt 1/9 scale (approx) 1804 Pen-Y- Darren locomotive. Designed by Richard Trevithick this became the worlds first locomotive.
In 1802 Trevithick took out a patent for his high pressure steam engine. To prove his ideas, he built a stationary engine at the Coalbrookdale Company's works in Shropshire in 1802, forcing water to a measured height to measure the work done. The engine ran at forty piston strokes a minute, with an unprecedented boiler pressure of 145 psi.
The Coalbrookdale company built a rail locomotive for him, but little is known about it, including whether or not it actually ran. To date, the only known information about it comes from a drawing preserved at the Science Museum, London, together with a letter written by Trevithick to his friend, Davies Giddy. The design incorporated a single horizontal cylinder enclosed in a return-flue boiler. A flywheel drove the wheels on one side through spur gears, and the axles were mounted directly on the boiler, with no frame.
Basically what I did was I used the 1/38 scale Minicraft model for measurements and multiplied everything by four. The flare on the smoke stack and the wheel hub points were my own embellishments. The materials used were styrene sheet, aluminium and brass tube and roding and an outdoor lamp cover which had the perfect diameter and length for the main boiler.