2011-06-10 013 Ffestiniog Railway North Wales 'Fairlies Patent' loco
***Jun 1st 2013 1,000 views!***
I don't usually take photos of steam engines, but I made an exception for the unusual locomotives in this set.
The locomotives are two solutions to the problem of building a powerful engine able to work within the tight curves and clearances of a narrow gauge line.
Essentially, the problem is that a powerful loco has to have a big boiler, and a long rigid wheel base won't take the curves.
These locomotives were designed for the Ffestiniog railway, which had a large business hauling slate from Blaneau Ffestiniog to Porthmadog, from where it was shipped world-wide.
In this design there are basically two boilers mounted back to back, on articulated bogies. This makes it possible for the larger locomotive to negotiate the curves.
This design had limited commercial success, there were some other lines that had them, but no other railway in Great Britain had them.
Compare these with the 'Beyer Garrett' locomotives in the other photos in this series.