On Sat, 16 Jul 2011 09:16:26 +1200, Gib Bogle wrote:

On 7/16/2011 12:54 AM, Andy Breen wrote:
On Fri, 15 Jul 2011 05:05:17 -0700, Matty F wrote:

shurely shome mistake

Boilers are not cast iron just for starters

Not (usually..[1]) in locomotive applications for many years, but it
was the standard material for many boilers - including locomotive ones
back in the earlies.

The first commercially successful locomotives - and the first exported
- had cast iron boilers, after all..

Pretty hard to cast a boiler, shirley?

Why? They don't seem to have had any trouble doing so in 1808?

http://www.sciencemuseum.org.uk/imag...5/10301641.jpg

How hard is it to cast a cylinder anyway? They'd been doing it for years.
Cast one big cylinder for the casing, a U-shaped one for the flue, bolt
on (cast) end-plates and bolt the flue into the end plate. Voila. A vey
sophisticated boiler for the day.

--
From the Model M of Andy Breen, speaking only for himself