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"Forward" into 2023.

Started by John Candy, Dec 21 2022 21:41

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cabbage

John,
My tronxy has a print bed of 330x33m. Most domestic printers have a bed of 180x180mm. Although 220x220mm becoming common.

Regards

Ralph

John Candy

GCR All First Corridor (1911 stock)

This is the All First Corridor (1911 stock)
http://gauge3.info/downloads/GCR/GCRFirst(1).zip

As with the All Third, the coach is symmetrical about the centre line on both sides, so, while there are six files for the upper sides (3 each for compartment side and corridor side), there are just three for the lower sides (you require two printed copies of each of lower side files).

The longest component is  295mm in length (there will eventually be a "compact" version for smaller printers).

The Brake 1st/3rd Composite is in preparation together with coach ends of the matchboarded type.
My fellow Members, ask not what your Society can do for you, ask what you can do for your Society.

John Candy

#17
GCR 1911 Stock .... matchboarded ends.

As mentioned in a previous post, two types of end appear in photos of this stock. Some have panelled ends, while others have matchboarded ends.

I have uploaded to  https://gauge3.info/downloads/GCR/GCR_ends(1).zip 

which contains files for the matchboarded inner ends and brake ends (the panelled type will follow).

The files are suitable for use with both gangwayed corridor stock and non-gangwayed (suburban/compartment) stock  The gangway connectors will be provided later as add-ons.

The Brake 1st/3rd composite and Brake 3rd (5-compartment) are almost ready.

I will likely produce a semi-corridor lavatory composite of non-gangwayed stock (a similar arrangement to that later used by Gresley for LNER stock.

brake end.jpg plain end.jpg
My fellow Members, ask not what your Society can do for you, ask what you can do for your Society.

John Candy

GCR 1911 Stock Panelled Ends and Gangway Connectors

This is where it can become confusing, so (if you are intending to build these carriages) I suggest you keep this note to hand.

My previous post contained the link to the matchboard ends which are basically the same for gangwayed (corridor) and non-gangwayed (local/suburban compartment stock). The only difference being the need to add the gangway connector base mounts which are at https://gauge3.info/downloads/GCR/BS_gway_conn.stl

The "bellows" section fits into/onto this base. I have not yet decided whether to print the bellows section in flexible "TPU" material, print rigid or to fabricate individually.

Both types of carriage (gangwayed and non-gangwayed) were also built with panelled/beaded ends BUT the arrangement of panels differed between the two, so don't add connectors to the non-gangwayed pattern.

To produce a gangwayed carriage you require https://gauge3.info/downloads/GCR/GCR_ends(2).zip (the connectors are included as part of the ends).

To produce a non-gangwayed carriage you require httpS://gauge3.info/downloads/GCR/GCR_ends(3).zip


BS gangway connector.jpg brake end gangwayed.jpg plain gangwayed end.jpg brake end nogway.jpg plain end nogway.jpg
My fellow Members, ask not what your Society can do for you, ask what you can do for your Society.

John Candy

#19
GCR 10ft-6in Bogie

I have been working on the side frame for the 10ft 6ins wheelbase bogie used under the majority of the coaches of the type being modelled (as well as the "Barnums").

It is massive for a 4-wheel bogie and the suspension arrangement is very complex (see  https://gcr-rollingstocktrust.co.uk/2022/11/29/rst-historic-achievement-major-bogie-rebuild-completed/ 
for the examples on the preserved "Barnums").

I am still working on the additional springing and damping details which will be a separate unit to fit behind and beneath the main unit.
Meanwhile, the main sideframe component is at

https://gauge3.info/downloads/GCR/bogie(1).stl

The axlebox cover is the later GCR type which replaced the angular type with which they were originally built.

GCR bogie 1.png

The Brake Composite and Brake Third (5-compartment) are now complete ... I just have to write the notes before uploading.
My fellow Members, ask not what your Society can do for you, ask what you can do for your Society.

John Candy

The springing arrangement of the GCR Spencer Moulton bogie is complex and very few photos provide any view of the detail and then only snippets. The only arrangement drawing I found was very difficult to read/interpret ....it provides the mechanical detail but gives few clues as to external appearance. I suspect the restored bogies are not visually identical with the originals, judging by photos I have seen.

Attached is my best effort at producing a single unit which attaches to the inside of the main sideframe.

The first two images shows the detailing unit as provided by the file

https://gauge3.info/downloads/GCR/bogie(2).stl

The others images show how it is attached to the main sideframe unit.


gcb5.png gcb6.png gcb1.png gcb4.png gcb3.png
My fellow Members, ask not what your Society can do for you, ask what you can do for your Society.