There will be many people who may advise you as to which boiler to build but instead of that I would recommend you read MODEL BOILERS & BOILER MAKING by K.N. Harris. That way you can perhaps judge better for yourself what you can undertake.

Just for instance upright boilers are perhaps the least efficient of all boilers. I'm not saying it couldn't be induced to produce enough steam for your purposes but that it's inefficient boiler in design. I'm guessing that you may have in mind your 10V propelling a Victorian Launch or similar.

Perhaps you could hide a flash steam boiler in side your upright casing. All the necessary maths and layout are covered by Harris.

Good luck all the same with what ever you decide.

Jesse

Edited By Jesse Hancock 1 on 19/02/2015 17:58:36

John Hainings "Dairy Engine" has a nice coal fired vertical boiler as opposed to most of the small ones where the tube layout best suits gas firing. Its 4" dia and was sized to suit a 5/8" bore x 5/8" stroke vertical engine so would just stretch to the 10V. MHS have the plans.

J