Search found 216 matches

by junctionmad
Sun May 12, 2019 9:38 pm
Forum: Signals and Control Systems
Topic: Arrangement of levers in a signal box (calling at the Quintinshill disaster, use of collars and setting back)
Replies: 52
Views: 5169

Re: Arrangement of levers in a signal box (calling at the Quintinshill disaster, use of collars and setting back)

Jim Summers wrote:Thanks, Noel.
One can understand how its name lasted longest in publications associated with the rules and signalling.

Jim

I beleive CIE were the last users of the final RCH handbook, uphill around 1975 I beleive , so it lasted even longer then you might have expected
by junctionmad
Thu Apr 25, 2019 9:34 am
Forum: Tools and Techniques
Topic: Resistance Soldering
Replies: 96
Views: 17582

Re: Resistance Soldering

It would be an interesting project to develop a solid state version , easy enough with some big power mosfets and a back end switching system ( well not that easy )

I looked at getting a custom toroidal traffo wound , entirely do-able but a little pricey in 1 offs
by junctionmad
Wed Apr 24, 2019 8:20 am
Forum: Tools and Techniques
Topic: Resistance Soldering
Replies: 96
Views: 17582

Re: Resistance Soldering

Anyone know a source of suitable transformers that could be pressed into service for resistance soldering ?

Dave
by junctionmad
Fri Mar 22, 2019 8:10 pm
Forum: Signals and Control Systems
Topic: Arrangement of levers in a signal box (calling at the Quintinshill disaster, use of collars and setting back)
Replies: 52
Views: 5169

Re: Arrangement of levers in a signal box

Practice somewhat varies by company , but in essence running signals are at the appropriate end of the box. With points , locks and ground signals in the middle Generally running signals were arranged so that a line was cleared signal wise from levers largely grouped together The other determining f...
by junctionmad
Wed Mar 06, 2019 2:49 pm
Forum: Semaphore Signals
Topic: close up photos of GWR tubular signals
Replies: 13
Views: 1529

Re: close up photos of GWR tubular signals

brilliant thanks
by junctionmad
Wed Mar 06, 2019 11:54 am
Forum: Semaphore Signals
Topic: close up photos of GWR tubular signals
Replies: 13
Views: 1529

Re: close up photos of GWR tubular signals

excellent thanks , has anyone a square on pic of the back ?
I have a good pic from the lamp side
Dave
by junctionmad
Tue Mar 05, 2019 12:57 pm
Forum: Semaphore Signals
Topic: close up photos of GWR tubular signals
Replies: 13
Views: 1529

close up photos of GWR tubular signals

Im just beginning to 3D print the bits for the classic GWR tubular semaphore signal , in 7mm , these will slide onto suitable brass tubes. I have some good drawings , but could do with a few photos of the back of the signal , in particular the lamp bracket and spindle bracket . I have Vaughans book ...
by junctionmad
Tue Mar 05, 2019 12:18 am
Forum: Track and Turnouts
Topic: Modelling loose heeled switches in 4mm
Replies: 34
Views: 4113

Re: Modelling loose heeled switches in 4mm

Thanks for the picture of the loose heeled filing template. We will take a look at a couple we have here in Sydney next month, in our regular Sydney meeting. I wobder if they are now available again? With instructions. Turning to the Brian Morgan joggling fret, Craig W was expectant, having failed ...
by junctionmad
Mon Feb 25, 2019 3:28 am
Forum: Track and Turnouts
Topic: Modelling loose heeled switches in 4mm
Replies: 34
Views: 4113

Re: Modelling loose heeled switches in 4mm

I think that if you are trying to produce GWR style loose heeled turnouts the procedure is different to the above. The switch rails need to be filed in the special loose heeled filing jig. This produces a switch rail that has its flat face to correspond with the straight of the stock rail. The runn...
by junctionmad
Mon Feb 18, 2019 2:10 pm
Forum: Track and Turnouts
Topic: Modelling loose heeled switches in 4mm
Replies: 34
Views: 4113

Re: Modelling loose heeled switches in 4mm

thanks , Martin , as always your a mine of information

Dave
by junctionmad
Sun Feb 17, 2019 9:11 pm
Forum: Track and Turnouts
Topic: Modelling loose heeled switches in 4mm
Replies: 34
Views: 4113

Re: Modelling loose heeled switches in 4mm

Martin , is the set the same where the stock rails have joggles ? , ie like semi curved


Dave K

I always thought joggles are completely different to sets , semi curved switches have sets , but do gwr loose heeled points have joggles and sets ?


Dave
by junctionmad
Sun Feb 17, 2019 8:49 pm
Forum: Layouts and Operations
Topic: The Burford Branch
Replies: 268
Views: 66159

Re: The Burford Branch

In general modern design is far more efficient with materials then on the past , because material science and computers mean far more precise calculations and finite stress analysis can be done What is different is that safety margins are far greater today then on the past , so while a structure may...
by junctionmad
Sat Feb 16, 2019 10:06 pm
Forum: Layouts and Operations
Topic: The Burford Branch
Replies: 268
Views: 66159

Re: The Burford Branch

Brilliant thanks for all the pics

Dave
by junctionmad
Fri Feb 15, 2019 5:36 pm
Forum: Track and Turnouts
Topic: Modelling loose heeled switches in 4mm
Replies: 34
Views: 4113

Re: Modelling loose heeled switches in 4mm

Hi Dave, Loose-heel switches can only be modelled exactly to scale if you are using dead-scale flangeways. Even the overscale flangeways in P4 are border-line. In 00-SF and EM you must extend the length of the switch rails to the position where the heel offset provides at least 1mm flangeway cleara...
by junctionmad
Fri Feb 15, 2019 4:46 pm
Forum: Scenery and Structures
Topic: GWR rectangular covered water tower - dimensions?
Replies: 7
Views: 2293

Re: GWR rectangular covered water tower - dimensions?

Tanks :D for that , Id love to see the detail shots as that tank is exactly the one Im basing my 7mm model on ( chipping sodbury ) which had those rectangular legs I notice the typically rectangular rising main cover to the tank is absent Also while there is a single pipe , how come there isnt two ?...
by junctionmad
Fri Feb 15, 2019 4:19 pm
Forum: Track and Turnouts
Topic: Modelling loose heeled switches in 4mm
Replies: 34
Views: 4113

Modelling loose heeled switches in 4mm

I put this question up on Templot Club , but it might be better here as the audience is likely bigger Ive built a fair bit of semi curved points in various 4mm gauges , but now I've been asked to make some 00-SF GWR loose heeled turnouts. While I know there are geometry changes and joggles the main ...
by junctionmad
Fri Feb 15, 2019 12:57 am
Forum: jon price
Topic: Tracklaying
Replies: 16
Views: 3169

Re: Tracklaying

I build on the work bench , primarily cause I can sit down. where I expect it , I leave long tails to avoid the " short bits of track " syndrome. I also tend to build complex trackwork as a set on the bench ( scissors , double junctions etc ) the back plain from situ building would out me ...
by junctionmad
Wed Feb 13, 2019 6:33 pm
Forum: Scenery and Structures
Topic: GWR rectangular covered water tower - dimensions?
Replies: 7
Views: 2293

Re: GWR rectangular covered water tower - dimensions?

Thanks Ian , I have a picture of thAt tower so I can scale accordingly
by junctionmad
Wed Feb 13, 2019 11:27 am
Forum: Scenery and Structures
Topic: GWR rectangular covered water tower - dimensions?
Replies: 7
Views: 2293

GWR rectangular covered water tower - dimensions?

Im trying to establish the basic dimensions of the typical later pattern , ( I beams and four legs ) GWR water tower similar to the one at Henly in Arden

https://goo.gl/images/f2TCAA

can anyone help ?

Dave
by junctionmad
Thu Feb 07, 2019 10:19 am
Forum: Track and Turnouts
Topic: Brian Morgan TOUs
Replies: 13
Views: 5647

Re: Brian Morgan TOUs

Theres a lot of " gubbins " under that board :)

dave
by junctionmad
Fri Feb 01, 2019 10:57 pm
Forum: Where to Find?
Topic: Tufnol sheet
Replies: 4
Views: 953

Re: Tufnol sheet

Ebay often has them for sale
by junctionmad
Fri Feb 01, 2019 10:29 am
Forum: Railway Buildings
Topic: Carriage loading docks
Replies: 74
Views: 8401

Re: Carriage loading docks

I would respectfully disagree with Tim Lee's suggestion that the two photos he has posted are "probably not helpful or relevant" (!) They are both very helpful, and entirely relevant. The use of steel plates as ramps is clearly in evidence. In the first shot, small plates are actually bei...
by junctionmad
Fri Feb 01, 2019 10:00 am
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 301
Views: 43994

Re: Brimsdown-The last grand project.

Great track work On our club O gauge layout , we stuck down the track using dilute PVA “ Screwfix no nonsense pva “ , applied after the track was help in place by temporarily pins . It was just brushed on liberally over everything . To release it , we had to change a section of the fiddle yard post ...
by junctionmad
Fri Dec 21, 2018 8:55 pm
Forum: Scenery and Structures
Topic: painting paving stones and platform copings
Replies: 14
Views: 2261

Re: painting paving stones and platform copings

If you are after paint mixing advice then I suggest that you get a selection of pots in your favoured medium, enamel, acrylic etc. One or two (or three) shades for each primary colour; red, yellow and blue, and try mixing them until you arrive at your chosen colour. Needless to say you may be in fo...
by junctionmad
Mon Dec 17, 2018 4:28 am
Forum: Scenery and Structures
Topic: painting paving stones and platform copings
Replies: 14
Views: 2261

Re: painting paving stones and platform copings

Thanks , I’ll give the suggestions a try on a test piece

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