|View single post by oztrainz|
|Posted: Thu Apr 11th, 2013 01:32 pm||
seeing I'm a recent arrival, I'll put up a topic on my current project - a model of a self-acting incline that operated at Corrimal Colliery near Wollongong NSW in Australia. Wollongong is about 60 miles South of Sydney.
As far as I know (after several years of looking), no-one has successfully modelled an operational self-acting incline. This type of an incline has 2 tracks and is worked with a continuous rope that does not change direction. Its distinguishing visual characteristic is of individual skips dotted along the incline rope with one track with loaded cars heading one direction and on the other track empty cars dotted along the rope heading back the other way.
On the prototype, individual loaded 3/4 ton capacity 2' gauge coal skips were attached by clips to the haulage rope with on one track and lowered down the hill. At the bottom of the hill, each skip was unclipped from the rope, emptied and the coal was transfered to a screens building over standard gauge tracks.
After emptying, the coal skips were lowered on a creeper chain and kickback siding to a lower level where they were attached to the haulage rope on the other track for their return run uphill. At the top of the hill, the skips were unclipped from the haulage rope, rolled over the other track, and collected in a siding, where they were coupled up before being hauled back to the mine by small steam locomotives.
The incline rope also drove the creeper chain, elevating conveyor to the screens building,the screens themslves and still had to get rid of 40HP of energy through water-cooled brakedrums in the brakehouse at the top of the incline. This incline was installed in 1890, modified prior to 1912, and was demolished in 1955, after it was superceded by a 3'6" gauge incline that fed a new washery. The incline fell through 300' over a length of about 800' with a ruling grade of 1 in 4 or 25%
First up a link to a website with some photos of the narrow gauge railway that ran from the mine to the incline top and the standard gauge railway that hauled coal away from the bottom of the incline
From 1906 to its closure in the mid-1960's, 4 steam locomotives operated the mile long 2' gauge railway between the mine and the incline top. Two of the 4 steam locomotives have been preserved and both are currently operational at local railway museums.
Now to the model
At just over a mile long and fall of 300', in dead scale at 1/43 full size, this layout would not fit in 2 basketball courts and would be over 10' high. By applying an awfull lot of selective compression we have come up with this as a plan:
The plan is to build the layout in 3 stages, with the hardest, most technically demanding part being done first - The actual incline. We are currently at Stage 1
How we got started on "Corrimal" and how we've gone about actually being able to haul "stuff" on on a 25% grade can wait til next time
Unanderra in oz
Last edited on Wed Jan 29th, 2014 11:30 am by oztrainz
Unanderra in oz