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Manchester Central, CLC & GN Warehouses & Castlefield Viaducts


Ron Heggs
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The top deck and rails were removed before 1950, so will have to remove them for the period being modelled i.e. 1955-1965. Will post a few more close-up photos with background info. if you are interested

 

Cheers

 

Ron

 

Yes please Ron.

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The signal gantry on the eastern buttresses of the Deansgate CLC bridge originally carried semaphore signals. In 1935 the semaphore signals were replaced by electric light signals during the electrification of the signalling and replacement of manual operation of turnouts by electric motors. The gantry was moved some 200 metres west in 1958, as part of a re-signalling project, and was finally removed in early 1970's after Manchester Central was closed

 

The only detailed picture of the gantry I have been able to find is in 'Scenes from the Past : 48 - EM Johnson - Foxline'

 

The model was created from a CAD drawing produced from reference to the preceding drawing and the known span dimension

 

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3D view created from the CAD drawing - the lower timber platform was replaced by metal vertical slats, and the upper platform and hand rails were removed, at some date between 1935 and 1952

 

The model will be modified by the removal of the upper platform to correspond with the layout period i.e. 1955 - 1965

 

post-10633-0-54647200-1383250172_thumb.jpg

The vertical struts are 10thou x 30thou/10thou x 20thou styrene forming angle sections

The diagonal struts are 10thou x 30 thou styrene strips

The horizontal members are 20thou x 40thou/20thou x 20thou styrene forming angle sections

The handrails are made from 20thou styrene rod

 

The upper platform comprises 1mm x 1mm obeche supports with 1mm x 20mm obeche strip for the platform

 

The three three aspect signal heads are from Eckon kits. The shunting signal and the theatre displays are all dummies at this stage

 

The gantry carried three alphabetic display boards denoting the lines corresponding to the signals, namely A for the slow line, M for the middle line and B for the fast line

 

post-10633-0-16195300-1383250204_thumb.jpg

 

 

post-10633-0-28728800-1383250234_thumb.jpg

 

post-10633-0-32543000-1383250247_thumb.jpg

 

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The three Eckon three aspect signal heads are wired via a linear cable boxing just behind the lower platform, and down both buttresses in similar cable boxings

 

post-10633-0-93786200-1383250313_thumb.jpg

 

post-10633-0-35943800-1383250348_thumb.jpg

The metal vertical slats of the lower platform are 10thou x 20thou styrene strips

 

post-10633-0-85133200-1383250380_thumb.jpg

 

A couple of the struts have snapped (probably due to the fragile nature of the structure, and the move from the UK to Spain) and will be replaced before the bridge is fixed on the layout

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The gantry is under repair and the upper platform is being removed

 

The picture mentioned above also shows a second gantry which carried signalling equipment for station bound trains. This gantry was removed completely in 1958

 

It is of similar, but not identical structure, and is mounted on the south side west end bridge parapet and a separate viaduct buttress just beyond the north side west end bridge parapet

 

Producing the CAD drawing tonight, and hope to make a start on the construction early next week - will post details and progress

 

Ron

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The elevation drawing of the second signal gantry with comments -

 

post-10633-0-79437700-1383516347_thumb.png

 

The access laddering is detailed at the bottom of the drawing

 

The items identified with an X are diagonal angle cross bracings located within the structure

 

The lefthand end of the gantry sits on the south side bridge parapet, and the righthand end sits on separate buttress close to the north side parapet due to the skewed arrangement of the bridge

 

Now to produce the 30th x 30thou angle sections from 10th x 30th & 10th x 20th styrene strip, and the 60th x 50th angle sections from 10th x 60th & 10th x 40th strip

 

Pictures tomorrow

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Today's progress -

 

post-10633-0-84219500-1383597066_thumb.jpg

A bit of a wrecker's job - ... and only one broken strut - that's the upper platform removed - just a bit of a clean-up job now

 

post-10633-0-45110000-1383597100_thumb.jpg

The buttress adjacent to the north side parapet

 

post-10633-0-83493900-1383597134_thumb.jpg

Just three of the eighteen 30thou vertical angle struts

 

post-10633-0-16135400-1383597165_thumb.jpg

The 60th angle members

 

post-10633-0-52872200-1383597195_thumb.jpg

End plating and gusset plates

 

post-10633-0-62312300-1383597229_thumb.jpg

The first three 30th vertical angle struts fixed

 

post-10633-0-39873800-1383597264_thumb.jpg

... and the remaining struts in place

 

post-10633-0-05725200-1383597356_thumb.jpg

Close-up

 

post-10633-0-25675300-1383597295_thumb.jpg

End plating vertical/curved angle strutting fixed

 

post-10633-0-94883200-1383597326_thumb.jpg

Close-up

 

post-10633-0-45426200-1383597412_thumb.jpg

30th diagonal struts fixed

 

post-10633-0-62231800-1383597442_thumb.jpg

Close-up

 

post-10633-0-46489700-1383597473_thumb.jpg

...and again

 

post-10633-0-25973200-1383597506_thumb.jpg

Cross bracing diagonal struts fixed

 

post-10633-0-46763400-1383597533_thumb.jpg

Close-up

 

 

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Ron

 

I keep witching your progress with amazement, and then keep getting even more amazed. I don't' really post comments anymore cos the only comment I have about your work is "amazing". Thank goodness for the Craftsmanship Clever button!

 

Your posts and photo's of your progress have had an impact on me, and now I am retired once I do get going I will definitely be willing to try stuff I would never have considered a couple of years ago.

 

Amazing :no:

 

Chris

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Hello Ron,

 

you must be stark ravaging bonkers to do this amount of work. On something that most people would say that will do and buy a kit that's near enough.

 

But please keep on being stark ravening bonkers, as the work is just fantastic.

 

OzzyO.

 

PS. I'm mad.I know I'm mad Etc.

Edited by ozzyo
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Hello Ron,

 

you must be stark ravaging bonkers to do this amount of work. On something that most people would say that will do and buy a kit that's near enough.

 

But please keep on being stark ravening bonkers, as the work is just fantastic.

 

OzzyO.

 

PS. I'm mad.I know I'm mad Etc.

 

Possibly :scratchhead:

 

But as the saying goes - 'I like it' :sungum:

... and it keeps me sane - I think :locomotive:

or is that insane :jester:

 

Cheers

 

Ron

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Excellent work there rom. One question, are those signal gantries welded or rivetted? Only asking because I dont see any rivets on the gusset plates. :-)

The gantry dates from 1893. After 75 years the rivets heads disappeared under countless coats of paint :scratchhead:

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Wot a cop out. Not what we have come to expect from your standards. :-)

It's no cop out

 

The real problem is that no photographic detail exists of rivetting locations, number and size. So any attempt at rivet placement would only be a guess

 

If it is even feasible to place the smallest rivet transfer 8thou on the 30thou strip bracings, and on the 20thou insides of the 30thou angle sections, the visibility of such rivets is questionable

 

I will attempt a few placements. If all goes well there will be a minimum of 130 rivets to place

 

Cheers

 

Ron

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Don't suppose you will be subjecting this little beauty to a load test then?  :sungum:

I'm hoping that no locomotives will end up on top of the gantry :no:

 

post-10633-0-28858100-1383864064_thumb.jpg

Tested with a full bottle of PlasticWeld - slight bending of cross braces - no permanent deformation

 

Cheers

 

Ron

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It's a stunning piece of work and I've shared my highest accolades earlier, but I'm curious regarding how much of the non-railway buildings and infrastructure are planned - if, indeed, such development is considered?

 

Tony.

Hi, Tony

 

So far only four non-railway buildings have been constructed -

 

Crown Hotel on the corner of Deansgate and Trafford Street

Two shops and a residence/offices (built as one structure) on the corner of Deansgate and Bridgewater Street

Railway Hotel and the two terraced houses adjacent (built as one structure) on the corners of Deansgate, Whitworth Street West and Crown Street

Canal Lock Keepers House (used as offices) by Crown St and Whitworth St West

 

The engineering works sandwiched between Trafford Street, Great Bridgewater Street and the GNR viaduct between Deansgate and the NR goods yard is about 50% completed. This awaits the finding of any photographs for the frontage and access/yard details, before completion

 

Houses along Bridgewater Street and the surrounding environs will be built (plenty of photographs available) - subject to period evidence, as this area was undergoing clearance from the 1950s onwards

 

... and there will one or two more on the south side of the Castlefield/Cornbrook Viaducts which are canal related

 

Cheers

 

Ron

Edited by Ron Heggs
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