Scalefour Forum

In the table I gave the first figure is the number of stretcher bars, in the case of the A switch that is 2. The second figure, in brackets, is the number of those that are driven, in the case of the A switch (1). Sorry if it was not clear. On your drawing the stretcher nearer to the tips would have...

Obviously the best course is to have the blades actuated as per the prototype and not just in one place but presumably for most of us that's an unnecessary fuss except for longer switches... Prototype A switches only had one drive position, same generally for B switches, back drives were/are requir...

In the layout as modelled there is facing entry to the loop so no need for trains to reverse in, I would still have the section signal (starter) beyond the exit points but less than a train length, just some shunting space. Then a disc exit is fine, loop entry could be an offset bracket with small a...

The signals heading to the right do need left hand arms though, and both discs leading out of the yard should be yellow, with the left hand one red there is no access to the goods shed.
Rgds

AGs wheels have been in the catalogue for ages, I have both the conversion set and the normal 1/8* axle versions.
Conversion set catalogue page 27 item 4800/13, 1/8" axle page 7 item 4851N.
(page nos from the 2018 issue currently on the website for download).
Rgds

When we started the forum attachments on PMs was disabled to avoid the server being filled up with pictures etc. when only one person was going to see them. Now we have a lot more space maybe John can be generous and change the setting. But when the picture is relavant to the topic why hide it from ...

I find these to be ideal as they are square and therefore rub along the top of the rail better. Available from any decent art shop. https://www.derwentart.com/en-gb/c/professional-products/drawing/natural-graphite or these: https://www.cassart.co.uk/drawing/pastels_1/charcoal-graphite/derwent_xl_ch...

I seem to remember I passed the original drawing on to someone more interested in the GWR than I. However I do have a photocopy and here is a scan of the central 3 way diamonds.

Also exciting is the thought of the pointwork shown in your track diagram!! Are these 6 way crossings!? - I assume no such thing existed but wonder if you have more of your wonderful photos to show the trackwork there? They certainly existed, although I don't know that 6 way crossing is the right d...

I have heard the sleeper flicker effect used as a reason for the long noses on some diesel such as class 40 or Deltic.
Small windows were more of a driver safety issue as they allowed much stronger glass to cope with missiles, bricks dangling off bridges etc.
Rgds

Yes, I use rotary switches for simple point interlocking, the junction in my photo above just has a single 4 position switch. The switches come with 30 degree steps so you can make the diagram with matching angles.
Regards

Tony, Crossing A is switched to either X or Y, it cannot connect to both at once. The switching uses contacts on 1 and 4, if both 1 and 4 are normal then A connects to Y for straight running, if either 1 or 4 are reversed then A connects to X. Sinilar arrangement for B. The trickier bit comes with C...

Herewith diagram and notes relating to a build sequence. Get back to me if you have any queries. p4 scissors build.jpg Build sequence First essential is to establish a clear baseline so start with the straight stockrail, item 1 on the diagram. Then its decision time, one option is to establish the t...

Here are a couple of pics of the closest I have to what you need, the tandem is similar but the scissors is non standard. And the board is currently under modification.
Build sequence to follow later.

The triangular gauges used with inclined rail need the length of the tongues reducing....how much depends on the source. You only need reduce the inners but its Ok to do both. File, saw, grind as available tools. I think you mean reduce the outers :) My triangular gauges have not needed this as the...

Herewith crossing switching diagram, more tomorrow. Scissors-buxton.jpg NB Only one crossover to be reversed at a time, otherwis there will be shorts on the diamond when a train tries to cross. Points 1 & 3 work together as a crossover, same for points 2 &4. 1 & 3 lock 2 & 4 - requir...

Ok attached is the isolation and bonding plan. Rest to come tomorrow.

Rgds
Keith

Tony,
That's great, I can work on that scan.
Regards

As above, I'll get on it later today.
Rgds

Hi Keith, Thanks for the quick response, the layout will be dcc and the station will be all one district I think. I cheated with the Templot, I overlayed points to get what I wanted but did not remove duplicate rails so it is very messy, I am actually building off a Protofour template. I suppose I ...

The crossing vees in a scissors have to be built as sets, so which is first is not answerable. To ensure you keep the track centres correct start with the two outer stock rails then do the crossings, takes a lot of care to keep the gauge correct through the crossovers. If you have the drawing done, ...

AMBIS has an alternative in real metal.
http://www.ambisengineering.co.uk/Products/Products_Index.htm
Regards

"Escape to the Country" (BBC1) this afternoon has just shown the Barrow Hill table in operation, shows the electric controls.

Provided that the flange root radius is close to spec, then a smaller gauge corner radius on the rail helps with switch blades as it will hold the flange tips further out from the rail giving a bit more tolerance on the switch tips.
Rgds

The electric drive may not have been original, could have been added later.