Hi Lads
many apologies for not updating the `spiral` thread.
Well a few things have moved on since the last posting on my bush clearance (ooh er missus) and subsequent new loop ideas.
To recap on the track plan.
This was how it would be formed but it had to be a little higher to allow the 1:20.3 scale locos to pass underneath the bridge.
I had wanted to construct a wooden trestle starting from the Arbour Summit tunnel exit right around to the bridge but I would need a lot of red cedar strips (I know that there are other woods available but, for this type of construction, using 3/8” struts etc., I prefer the non-rot properties of the cedar) and I just did not have enough of it.
I thought of concrete with stone facing and was about to go that way when I chanced upon a local nursery that had a large wire bin of very large lumps of an interesting looking rock.
They called it “York stone’ but it doesn’t look like the york stone that I know. It is in fact a flint that has, what resembles eroded gullies in it, and a surface that looks very much like smooth sandstone.
I immediately found out that there was a big reduction for bulk purchase and made three journeys, practically clearing the bin.
By positioning the pieces of rock small to largest in height I could make most of the distance from tunnel to bridge with a short section for a length of trestle.
I also used cotswold lumps and a heap of large rustic slate pieces (great colouring with the rust stains from the ferrous depositis)
I have used sandstone sets for the bridge piers on the nearside and a slab of rustic slate for the support on the far side
I built a gradually descending embankment to take the track from the bridge around to where the land naturally falls and then under the bridge.
It is planted with very slow growing varieties of conifer, alpines and dwarf azaleas.
There is still some detailing to be added though.....
1) cribbing to be added where the track crosses from one piece of rock to another
2) the ‘PointRock’ coaling station supply track spur will gradually climb a low embankment to reach the grid where the coal would be dumped
from the ‘drop bottom’ gondola cars ready for the coaling station hoppers to carry it up into the storage bin.
3) some rock pieces arranged to disguise where the large rocks join the ground
4) finish the concrete bases for the trestle bents
5) add all the connecting timbers between the trestle bents
But, at last, I do now have a bridge on my line!