Search found 658 matches

by Martin Wynne
Tue Jun 30, 2020 5:13 pm
Forum: Layouts and Operations
Topic: Kyle of Lochalsh MPD - track layout
Replies: 29
Views: 927

Re: Kyle of Lochalsh MPD - track layout

Hi Julian, I've had a go at the tandem by reference to the colour photo. It worked out quite well: https://85a.co.uk/forum/gallery/2/original/2_301258_060000001.png https://85a.co.uk/forum/gallery/2/original/2_301258_060000000.png BOX file: kyle_tandem_45degs.box I've rotated it 45 degrees from the ...
by Martin Wynne
Mon Jun 29, 2020 3:11 pm
Forum: Layouts and Operations
Topic: Kyle of Lochalsh MPD - track layout
Replies: 29
Views: 927

Re: Kyle of Lochalsh MPD - track layout

Hi John, Hmm. You are suggesting that heavy locos taking the right-hand road have displaced the stock rail wide-to-gauge on the left? That seems very possible. It can be difficult to draw accurately along a rail edge in a photo, because of the top corner radius on the rail, and wear patterns on the ...
by Martin Wynne
Mon Jun 29, 2020 1:02 pm
Forum: Layouts and Operations
Topic: Kyle of Lochalsh MPD - track layout
Replies: 29
Views: 927

Re: Kyle of Lochalsh MPD - track layout

Looking at the tandem's furthest switch in the Boyes photograph to which I posted a link, there is a pronounced set in the right hand stock rail, but I'm hard pressed to see any set in the stock rail opposite - so was this really a split deflection switch? Hi John, It's difficult to be absolutely s...
by Martin Wynne
Mon Jun 29, 2020 10:48 am
Forum: Layouts and Operations
Topic: Kyle of Lochalsh MPD - track layout
Replies: 29
Views: 927

Re: Kyle of Lochalsh MPD - track layout

Do those tandem switches look like loose heel ones? Hi Julian, No, the first switch is a "B" flexible switch. The second switch is also flexible but more difficult to be sure about the size, I think it is also a "B". However, it is a split-deflection switch, which makes it more ...
by Martin Wynne
Sat Jun 27, 2020 7:01 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 379
Views: 63995

Re: Brimsdown-The last grand project.

Hi Tony, I hesitate to mention it for S4, but a trick I've seen done for the switch tips in a double slip is to cut away the rail foot above the slide chair: slip_switch_tip_kludge.png The drawing looks horrible, but in practice it hardly notices, being hidden between the stock rails. It means you n...
by Martin Wynne
Sat Jun 27, 2020 5:44 pm
Forum: Layouts and Operations
Topic: Kyle of Lochalsh MPD - track layout
Replies: 29
Views: 927

Re: Kyle of Lochalsh MPD - track layout

There's a 1950s aerial photo here:

https://ncap.org.uk/frame/8-1-2-4-46-178?pos=12

which might possibly help, if high enough resolution. Unfortunately it requires a paid subscription to zoom in and find out.

Martin.
by Martin Wynne
Sat Jun 27, 2020 2:08 pm
Forum: Track and Turnouts
Topic: A4 points out of 6 chain curves
Replies: 9
Views: 429

Re: A4 points out of 6 chain curves

Rod Cameron wrote:It's a crop of a photo I found on Google images searching 'Lewes station', I don't know what the copyright issues are.

Thanks Rod. I found it here:

https://www.flickr.com/photos/31890193@ ... otostream/

It's copyright Ian Nolan, so I will contact him.

cheers,

Martin.
by Martin Wynne
Sat Jun 27, 2020 12:12 pm
Forum: Track and Turnouts
Topic: A4 points out of 6 chain curves
Replies: 9
Views: 429

Re: A4 points out of 6 chain curves

This is one of the diamonds on the station junction at Lewes, with both roads curving. https://www.scalefour.org/forum/download/file.php?id=24634 Hi Rod, That's a great pic of a curviform ladder. Can I use it in the Templot docs? Thanks. Note that the straight section of the K-crossing is not tange...
by Martin Wynne
Fri Jun 26, 2020 10:38 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 379
Views: 63995

Re: Brimsdown-The last grand project.

Can I point out that your blades are still not opening far enough - only about 1mm. The prototype opening was 4 1/4" or thereabouts so you need almost half as much again for safety.DaveB ... but any more Dave, and he will have a short on the opposing slide chairs. Anyone who says double slips ...
by Martin Wynne
Thu Jun 25, 2020 12:13 pm
Forum: Track and Turnouts
Topic: A4 points out of 6 chain curves
Replies: 9
Views: 429

Re: A4 points out of 6 chain curves

A more compact turnout, with an easier radius, would be to use a 9ft switch instead of an "A" switch. Those "A" switches are "natural" at 1:7, and hence significantly mismatched at 1:4. Although you say A-4 is a prototypical size, and is in fact included in the REA list...
by Martin Wynne
Sat Jun 20, 2020 7:28 am
Forum: Track and Turnouts
Topic: Kyle of Lochalsh tandem turnout length and other questions
Replies: 30
Views: 720

Re: Tandem turnout length question

Hi Julian, I'm sorry the image isn't showing, the cera.net data centre seems to be offline this morning. Here it is: julian_tandem.png You can't assume the track in the 1950s was the same as 1902, it could have been renewed at some stage. However, it's very likely that a yard tandem would be using l...
by Martin Wynne
Fri Jun 19, 2020 9:55 pm
Forum: Track and Turnouts
Topic: Kyle of Lochalsh tandem turnout length and other questions
Replies: 30
Views: 720

Re: Tandem turnout length question

Hi Julian, Sorry you didn't get the reply you were looking for on Templot Club. I got rather more involved in fixing the bug you found. I have found the switch toe mark to be the one detail which can reasonably be relied on in the historic OS maps. The tandem seems doable within the mapped detail, w...
by Martin Wynne
Sat May 23, 2020 4:04 pm
Forum: Layouts and Operations
Topic: Layout Fiddleyard Planning - 4ft radius turnout
Replies: 38
Views: 1652

Re: Layout Fiddleyard Planning - 4ft radius turnout

Hi Julian, The best way to create a symmetrical Y-turnout in Templot is to use an irregular half-diamond template. Start with an ordinary half-diamond on the desired radius and adjust the K-crossing angle (F10) until you get the V-crossing on the centre-line of the approach track. Then shorten the a...
by Martin Wynne
Thu May 21, 2020 10:29 am
Forum: Layouts and Operations
Topic: Layout Fiddleyard Planning - 4ft radius turnout
Replies: 38
Views: 1652

Re: Layout Fiddleyard Planning - 4ft radius turnout

Generally they have much less slop than drawer runners and as a result I've found them much easier to mechanise accurately once the runners are set up parallel. the downside is that without the drawer runner slop you definitely do need to get them parallel! Hi Chris, If you do something like this, ...
by Martin Wynne
Wed May 20, 2020 1:19 pm
Forum: Layouts and Operations
Topic: Layout Fiddleyard Planning - 4ft radius turnout
Replies: 38
Views: 1652

Re: Layout Fiddleyard Planning - 4ft radius turnout

All my stock I design to be able to go round a 4 foot curve, which is 1219mm. I have a question - what is the most space saving turnout with a minimum radius of 4 feet? I don't need it to look in any way prototypical Hi Julian, Templot has a setting for this: http://85a.co.uk/forum/gallery/2/2_2009...
by Martin Wynne
Mon May 11, 2020 10:34 am
Forum: Track and Turnouts
Topic: Single and Double Slip Operation
Replies: 8
Views: 1340

Re: Single and Double Slip Operation

Here's a 20-year-old article of mine which is still on the server: http://templot.com/info/slips.htm Explaining the working of single slip as part of a slip crossover: http://www.templot.com/info/slip2.gif Sorry it's so old, it could do with tidying up for modern browsers. cheers, Martin.
by Martin Wynne
Mon May 11, 2020 2:13 am
Forum: Track and Turnouts
Topic: Single and Double Slip Operation
Replies: 8
Views: 1340

Re: Single and Double Slip Operation

Hi John, The normal operation is that all the blades at one end move together. In the process the polarity of the V-crossing at the opposite end is switched over. And separately the same again at the other end. This applies to single slips and double slips. This is also the most usual prototype arra...
by Martin Wynne
Thu May 07, 2020 2:13 pm
Forum: Exhibitions
Topic: Scaleforum 2020
Replies: 113
Views: 10157

Re: Scaleforum 2020

Here's an article about using your normal digital camera for online conferences instead of the usual selfie "up your nose" laptop webcam. It's a bit techy, but worth a read (if you don't mind reading white text on black): http://friedmanarchives.blogspot.com/2020/05/turning-your-camera-int...
by Martin Wynne
Fri May 01, 2020 1:46 am
Forum: Track and Turnouts
Topic: Help with catch point
Replies: 21
Views: 1179

Re: Help with catch point

As an aside someone once told me Catch points catch runaways (on gradients) Trap points trap idiots A catch point is the physical object designed to derail vehicles. Sometimes a single-sided catch point, sometimes a double-sided set of catch points. These catch points are being used as traps. Other...
by Martin Wynne
Tue Apr 21, 2020 3:24 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 379
Views: 63995

Re: Brimsdown-The last grand project.

In general I am not a great fan of crimped connections even though they are widely used in industry Hi Tony, I tend to disagree there. Crimp connections are widely used because they are more reliable. They are flexible and ideal for terminating flexible cables. Soldered connections are not flexible...
by Martin Wynne
Mon Apr 06, 2020 11:34 am
Forum: Railway Buildings
Topic: When did aerials become common place?
Replies: 11
Views: 894

Re: When did aerials become common place?

TV rental advertisements from 1960 indicate that an ITA aerial was free with the TV, but a BBC aerial was available at low rentals [-/6d per week in 1962], confirming that two aerials were required. https://telefusion.weebly.com/uploads/1/0/9/2/10925213/2411514_orig.jpg linked from: https://telefus...
by Martin Wynne
Wed Apr 01, 2020 12:26 am
Forum: jon price
Topic: Connah's Quay: The Layout.
Replies: 17
Views: 5358

Re: Connah's Quay: The Layout.

Flymo748 wrote:From the utterly invaluable National Library of Scotland georeferenced maps:

Indeed so, and just a reminder that Templot can capture the map from the internet for you, and automatically display it as a background guide to track planning at the correct scale for P4:

maps.png

Martin.
by Martin Wynne
Wed Apr 01, 2020 12:17 am
Forum: jon price
Topic: Connah's Quay: The Layout.
Replies: 17
Views: 5358

Re: Connah's Quay: The Layout.

the original trackplan was prepared using the TRAX software in a book about making track. Unfortunately I had to upgrade my computer and now cannot run it Hi Jon, TRAX will run fine on Windows8-10, I'm running it on a fully updated Windows10 as we speak. The problem is with the installer program ra...
by Martin Wynne
Fri Mar 27, 2020 6:07 pm
Forum: Exhibitions
Topic: Scalefour Southwest 2020 Cancelled
Replies: 19
Views: 1902

Re: Scalefour Southwest 2020 Cancelled

I asked him to think about what happens if you plug in one end, to which his reply was "Oh dear" and he was the the works nominated safety officer! That reminds me of an exhibition held at a school back in the 1970s. One of the stands complained that the hall mains socket which they had b...
by Martin Wynne
Wed Feb 12, 2020 12:04 am
Forum: Track and Turnouts
Topic: Track for battery/radio control?
Replies: 28
Views: 2200

Re: Track for battery/radio control?

Thanks to those who expressed an interest in this. I can report some progress -- plastic rail: http://85a.co.uk/forum/images/emoticons/smile.gif http://85a.co.uk/forum/gallery/2/2_111752_390000000.jpg Quite a long way from a proper BS-95R section, but probably as close as is feasible on home filamen...

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