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28XX

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  1. 28XX
    I have followed The Archers since being introduced to it by my girlfriend, now my wife, over 25 years ago. For all its crazy plot lines it keeps a subtle foothold in real geography and relates to real world events in a way TV can never do. For the uninitiated, the action takes place in the imaginary county of Borsetshire. This occupies the physical area of East Worcestershire, West Warwickshire and North Gloucestershire, but in a different time-space continuum.
     
    There is even a map of the middle part of the county.
     

     
    One piece of the real world which appears regularly in the programme is the Oxford - Worcester railway line. Running East to West, the stations today are Felpersham and Hollerton Junction, which are the Borsetshire alternatives to Evesham and Pershore.
     
    The branch line which follows the River Am from Hollerton Jcn. is now preserved and called the Blackberry Line, whether it ever went any further than Croft is doubtful. My feeling is that it was built as a light railway from the outset, for agricultural traffic. Some farms in the Vale of Evesham had their own sidings, such as Spring Hill which connected with the OWW at Fladbury, perhaps the Blackberry Line was a larger version.
     
    There is also a line which turns South from the OWW between Hollerton and Felpersham. This leads to the Aymestry Forest coalfield in South Borsetshire, then on to Ashchurch on the Birmingham - Bristol main line. Aymestry is actually a hamlet 3 miles West of Worcester, scene of many childhood adventures. For the purposes of this fantasy, it is a bit like the Forest of Dean.
     
    Assuming the BBC map was drawn post-Beeching, I also postulate another GWR-owned line which left the OWW by a triangle junction at Netherbourne and followed the river Perch to Borchester. There is definately a Railway Hotel in Borchester which has been the scene of various secret assignations. A line linking the largest town (Felpersham) with the County Town (Borchester) would certainly be regarded as a necessity in the 19th century. This leads us on to the mysterious town of Stourhampton. Home to the industrial-scale Stourhampton Brewery, purveyor of Shires Ales, it featured in several stories in the early days but little is heard of it now. I like to think of it as being analogous to Redditch and being the next major station North of Borchester, the line continuing into Brum, not via Alvechurch, but on a direct route through Maypole and Kings Heath, eventually joining the Didcot-Chester line at Bordesley.
     
    I think the Midland would have wanted a piece of the action at Stourhampton too, so the line from Barnt Green goes there and then becomes the SA&MJ to Stratford.
     
    The Midland would have negotiated running powers to provide a service between Felpersham and Ashchurch via a curve, since lifted, and also between Barnt Green and Felpersham.
     
    The pre-Beeching map looks like this.
     

     
    Classical disclaimer: Other flights of fancy have been followed from this starting point. I have no wish to proseletize mine as being in any way superior to others.
  2. 28XX
    My original intention, as discussed in previous blog entries, was to use the main house loft for Stourhampton at 30'2 x 9'6" but the enabling works, (heating, cooling, plumbing diversion, flooring) plus noise restrictions after children's bedtime, make this impracticable at a reasonable budget.
     
    This thread -
     
    http://www.rmweb.co.uk/community/index.php?/topic/71727-design-for-stourhampton/
     
    - attacked the project from the other end, by developing a realistic track and signalling scheme before attempting to fit it into the garage loft at 16'6" x 7'7"
     
    The curves are generally 3' radius down to a minimum of 2', the Midland line is now a static scenic break and the distances between running signals are less than I would have liked, but overall it is a do-able project in a reasonable budget and timescale.
     
    http://www.rmweb.co.uk/community/index.php?app=core&module=attach&section=attach&attach_id=309122
     
    The first phase of baseboard frames have gone into the garage loft. These are conventional 2" x 1" timber screwed to the roof trusses.
     
    The first truss is only 215mm from the end wall. There is also an internal pier on the centreline of the wall which projects one brick (115mm x 215mm wide).
    I have used two pieces of 4" x 4" fastened to the pier with M8 x 180 long coach screws, together with a 4" x 1" horizontal, to take the loading of the truss, then cut out sections of the truss to increase the space available for the station area.
     

     

     

    The pier will be partly hidden behind the station building.
     
    Baseboards are 11mm OSB/2. This has a bad reputation among railway modellers but my personal experience is that this is undeserved. I had my first sheet cut into four 4' x 2' pieces. They have been painted with charcoal grey emulsion and notched to clear the truss members.
  3. 28XX
    I intend to create a 00 model of Stourhampton in my loft which has a useable area 9.2m x 2.9m. The GW passenger station will be built on a 180 degree curve around one end, with extensive goods facilities on the two long sides. The curve at the other end will contain the fiddle yards.
     
    The single-track Midland line will cross the GW North yard on a skew viaduct, run down the centre of the loft space, loop back over the GW fiddle yard, run behind the backscene and complete the circuit inside the wing gable. An exchange siding will link the GW and Midland lines.
     
    As I'm sure anyone reading this will be anxious to tell me, this is a 'magnum opus', I'm under no illusions. To get something running at an earlier stage, the up and down lines will be linked by two temporary 360 degree loops made of 2nd radius set-track. These will be mounted on independent baseboards so they can be moved progressively down the loft as building proceeds. The Midland line will be static to begin with too.
     

  4. 28XX
    The first practical steps on this project are to make the loft more habitable and to clear space for the layout. The apex of the roof is over 9' above floor level. I don't want to heat the 3' above my head so I will fit collars of 3/4" x 1 1/2" at about 6'6" height to each roof truss. As luck would have it, these work out at 6' long so they don't even need to be cut to length. Although quite small section they will add strength
    as well as support fluorescent fittings and foil/bubble insulation.
     
    The previous owners of the house have left 2' wide chipboard panels wedged into the V of the trusses on each side, and piled them with their junk, they are now piled with our junk. This is a really bad idea because it tends to bow the truss members and impose loads they were not designed for. Inserting horizontal rails to support these panels makes a virtue of a necessity. They add another triangle to the structure and take any tendency to bow as a tensile stress. The only hassle with this job is that the trusses have to be completely unloaded so they return to their natural shape before the rails can be added.
     
    The layout baseboards will be just under 3' wide and will sit above the junk stores, also on rails.
     
    The next step will be to remove sections from the second truss from the end, to allow the station area to be built. Foul! I hear you cry, but it is not actually difficult. The plan is to create a space-frame structure in the void under the baseboards between the first and third truss. Struts and ties will be added in both planes as shown in green on the drawings.
     
    Because we can't take a hydraulic press into the loft to join the sections together, generous profiled fishplates will be made from 6mm WBP ply and attached by a lot of small (1" no6) woodscrews and structural adhesive. My neighbour used to make trusses on site for firms doing garages and extensions (at a fraction of Kingspan prices) and the concept was approved by the building inspector.
     
    To ensure the new members are loaded up, an Acro prop will be positioned in the bedroom below the middle of truss 2 and just nipped up to take the strain. This will be removed once all the screws are in, but the truss members won't be cut out until the glue has had a week to harden.

  5. 28XX
    I have started track laying with the board which carries the point-work controlled by Stourhampton South. The procedure is a follows:
     
    The underlay is self-adhesive black 'Fab Foam', from Hobby Craft. A sheet slightly larger than A4 is 80p.
     
    The points are a mixed selection of 'pre-loved' Peco streamline, stock rails are bonded to the closure rails, closure rails are cut with a Dremel-type disc cutter and pre-wired with a foot of wire for frog (pink), feed (red) and return (black). Insulfrog points are treated the same way. I have bonded the the closure rails in the frog to the check rails and to each other, effectively turning them into live frog. This will give a few extra vital millimeters of feed, every little helps when it comes to smooth running.
     
    Slots are cut in the foam to accommodate a point actuator rod (1mm sq copper wire) which leads to a surface mounted 8 x 16mm crank and Tri-ang point motor. A good belt with a 24VDC 6A switch-mode power supply from a CCTV system gives a reliable changeover without any horrid buzzing. This is less safe (to equipment) than a CDU system but since [a] there won't be any guest operators, control will be by Tri-ang lever switches this should be ok. I might put PTC short circuit protection on later.
     
    The track is finally stuck to the foam with PVA wood glue and weighed down with a length of 25 x 25mm thick-wall RHS for 24 hours.
     

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