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Mamod smokebox metal

Posted: Mon Jun 16, 2014 1:30 pm
by funandtrains
Can anyone tell be if the Mamod / MSS casting in aluminium or zinc alloy? If it is aluminium I think it will take the heat of an internal gas boiler flame but if it is zinc it will melt and I will have to ditch the idea I have.

Posted: Mon Jun 16, 2014 2:56 pm
by Superbiker_uk
Hi Steve - The smoke box I think is a zinc alloy.  It sounds like you have a very interesting idea though.

Posted: Mon Jun 16, 2014 3:30 pm
by funandtrains
Due to the latest 16mm fad of coal fired locos there seems to be a ready supply a small gas fired boilers being sold off quite cheaply so I was considering trying to fit one to an old Mamod chassis I have as it would be cheaper than buying a new high pressure boiler.

Posted: Mon Jun 16, 2014 10:52 pm
by Chris Cairns
The old Mamod SL/current MSS smoke box casting is Mazak diecast (zinc alloy) and likes to melt as soon as a butane flame gets anywhere near it.

An internal flue boiler has been fitted to a Mamod type loco before but it suffered from the obvious reduction in water content caused by the flue.

No reason why you could not adapt another suitable sized smoke box.

Chris Cairns