Is a 3″ Cornish coal fire possible?

[Christopher Jones 9Participant @christopherjones9]

Thank you all for your advice last year. Having to go through 12 months of hardships (medical and career). I'm back in my workshop to pick back up. Having had alot of time to ponder and sketch I have decided that a horizontal boiler is must for my steam plant. I think we have established that coal would be a good experiment at present a full steam plant project is more important to me, so gas is not a must. A Cornish boiler for me has better eye appeal with the single fire box but the look of a gas burner on the front spoils the look. So or been playing with the idea of mounting the burner below the chimney pointing forward. This would in my mind require the flue to pass through the boiler twice to return to the chimney. A Lancashire boiler would possibly suit this better with 2 fake fire doors on the front over the 2 flue pipes.

Essentially a U shaped flue. And a clean stokers area at the front.

I would very much like if you can all throw your thoughts at this. I do plan to draw this up over the weekend and will post pictures.

Thanks in advance.

Chris

[JasonBModerator @jasonb]

If you bring the gas into the burner at an angle then it will only stick out about 30-40mm so you could just have a false backhead to cover that and then use a non return flue and chimney at the far end

[nigel jones 5Participant @nigeljones5]

sweet violet 3.5 gauge loco uses an boiler which is essentially a cornish boiler modded for a loco. It would be very easy to alter the design to a pure cornish shape and shorten it. Od is 6£, id is 3.5" and runs on coal. If you go to my fb page, pendle steam boilers, go to photos and fourth row down there are some pictures of me making one to give you inspiration! Its a very simple build. Mine has been modded to run a mill engine with two inch bore, three inch syroke with an elleven inch flywheel four inches wide. This was not a commercial project but was and is an ongoing build for pleasure.

[Boiler BriParticipant @boilerbri]

Paul,

That link was just what i was looking for.

Brian

[John HinkleyParticipant @johnhinkley26699]

And if anyone fancies building a full-size one, here's some info/dimensions from which to build it. Might even be of use once scaled down:

John

[vic francisParticipant @vicfrancis]

Hi Chris have sent you a pm regards vic

[Author]

Posts