Problem solved so I thought but only to be thwarted by 7109 being chilled to the core overnight in Midsomer Norton's goods shed. As soon as the paint touched the cold metal, it went back to tar and couldn't be spread. I gave up at this point.
Nigel (co-owner) appeared with two sheets of the cold steel to make a pair of superheater steady plates something like in the drawing below (apologies for the low resolution). These are screwed to the boiler top plate around the superheater tubes to eliminate leakage of air into the boiler's superheater space every time there is a 'chuff'. Each 'chuff' is supposed to draw air up through the fire not in via the leaks! I'll come back to this another time.
|Superheater steady plate drawing|
|Oldie but Goodie|
Work continued with attempting to persuade the boiler cover to fit. I have to admit that part way through the afternoon, I had to give up due to the cold. When the entire loco is freezing cold, every touch of the cold metal, whether it's feet or hands, loses a little more body heat. I'd run out!
Next Saturday 7th Feb. 2015 is the Sentinel Drivers Club AGM for the group of stalwarts who support all things Sentinel, including 7109.