Three more pics from the project manager of the cylinder replacement of Yx141.http://s1376.photobucket.com/user/ngordy/library/Yx141_02?sort=3&page=1
Having looked over the thread it seems to lack any information as to what has happened to Yx141 and why it is getting new cylinders. So here goes:-
When Yx141 reached completion of rebuild, it had all the necessary boiler inspections and was given a clean bill of health in that respect. The next job was to go and fill up the tender with water and coal and take it for test runs.
With a full head of steam, it headed out of the loco forecourt at the depot down to the gate and set back up the triangle road to the water column.
It was there that someone noticed that the steam was exhausting in a place that was a little strange. Most locos don't have any steam come out of the top of cylinder adjacent the loco frame.......
That put an end to any trials.
Examinations showed that the fireman's side (RHS) cylinder was cracked in a place that was not easily seen and only visible through a hole in the top of the casting.
After dismantling the loco back to a state where the cylinder could be removed which included the removal of the boiler (done by a crew consisting mostly of members and volunteers from Victoria who gained precious experience doing it) it was decided to replace both cylinders.
Sourcing cylinders was attempted from other locos of the same design (Colonial Mogul by Beyer Peacock) but when the loco was converted to Yx from Y class the cylinders were modified slightly and others would not have suited and could quite easily have suffered the same failure. Seeing if any other preservation society had patterns for casting available also turned up no good news. As a result, due to an injection of funds by an anonymous donor, a set of patterns were produced and the cylinders cast.
Now we need to have these machined and the whole loco reassembled.