CORPOSANT AS REQUESTED.
Here are some pics of my CERVIA, she is 40 years old and started out as being electric powered and was built from a free Vic Smeed drawing .
However after building the frames at 1/4" scale it was too small so I redrew it to 3/8" which made it 42' long and at that time steam power was far from my mind.
It lay up in my loft for 25 years before I remembered that it was there and by this time I needed something to take my mind off work so I bought a lathe and started to convert her to steam.
The engine was machined from Stuart 10V castings and the boiler was designed and made by myself (similar to the black one in the pics ) all the valves and bits and pieces were scratch built ( I like making boilers).
As you know Single cylinder engines are not self starting so with a slip eccentric and Meccano gears it can be done.
As I need a new challenge I am going to machine up a set of D10 castings and make it with reversing gear like the engine I have shown with my Puffer which I will install in the boat over the winter, although the 10V can be started and reversed it is not 100%, at present it runs at 50 psi but that will be too much for a D10 in such a small boat so probably will run at 30 psi. .
The all up weight at present is 34 lbs and the boiler is fed by a pump using pond water.
I am off now on holiday to the lake district so it will get my mind of steam boats and the fast electric K7 that I am building, will probably stop in at Conniston to the D Campbell museum.