 |
| HR23 construction complete |
Externally construction is complete, it remains to detail the cab interior, add the crew and coal the bunker. A two part article on modelling a Scrap Tank will be published in the next two issues of the Highland Railway Society Journal; part one will deal with construction up to the point seen in these photos, while the second will describe finishing and painting.
I'm still working on the large rivetted balance weights which are a prominent feature of the wheels and need to be convincingly modelled. I think the solution to making all six similar might be to have them 3D printed. The sand boxes, which scan be seen on the footplate above the cylinders and below the cab at the rear, were carved individually from scrap resin castings; only the chimney is a 3D print.
 |
| The sand boxes fit snuggly under the footplate behind the cab steps |
 |
| Detail of marine type big-end of connecting rod and back to back brakes. |
The back to back brakes between the front and center drivers presented a problem because of the restricted space available in model form, less than in reality because of oversize flanges and the need to allow clearance between brakes and wheel treads. A good deal of trial and error resulted eventually in the rather squeezed design shown above.
