Search found 673 matches

by Martin Wynne
Sat Sep 19, 2020 1:42 pm
Forum: Virtual Scaleforum
Topic: VIRTUAL SCALEFORUM & SCALEFOUR NORTH
Replies: 60
Views: 3869

Re: VIRTUAL SCALEFORUM & SCALEFOUR NORTH

David B wrote:I am surprised no-one has suggested Ronald Binge's Coronation Scot. :)

They did -- see Julian's 2nd link:

viewtopic.php?p=78604#p78604

Here it is:



However, I doubt it's available royalty-free.

Martin.
by Martin Wynne
Sun Sep 13, 2020 2:22 pm
Forum: Track and Turnouts
Topic: Masokits etched chairs turnout construction
Replies: 21
Views: 1952

Re: Masokits etched chairs

Drive keys "towards the joint, towards the station, towards the river" is the old saying. i.e. towards the nearest rail joint; where trains will be braking or accelerating; downhill. "drive" means the direction the keys are driven into the chair. The rear end of the key remains p...
by Martin Wynne
Sat Sep 12, 2020 1:01 am
Forum: Starting in P4
Topic: First steps in track building and P4.
Replies: 33
Views: 1589

Re: First steps in track building and P4.

any guage which holds the rail vertically whilst 1:20 chairs are glued will result in guage narrowing due to the rail springing to 1:20. And it is not insignificant. Only if the track is straight or very nearly straight. Curved model rail cannot be canted at 1:20 . If it were so, it would mean that...
by Martin Wynne
Fri Aug 28, 2020 11:11 am
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 420
Views: 75792

Re: Brimsdown-The last grand project.

but I don’t actually know what kind it is Hi Philip, Fibreglass is often double-sided copper-clad. SRBP is usually singe-sided copper-clad. Fibreglass tends to be white-ish, and translucent if you remove an area of copper and hold it to the light. SRBP is a yellow/brownish colour. cheers, Martin.
by Martin Wynne
Fri Aug 28, 2020 9:03 am
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 420
Views: 75792

Re: Brimsdown-The last grand project.

Is there none of the cheapo pcb available these days? Plenty of SRBP copper-clad still available: https://www.rapidonline.com/rvfm-low-cost-copper-clad-srbp-circuit-board-32634 and cheaper on ebay. 10 times easier to cut and work than fibreglass, but not suitable for outdoor use. Thousands of layou...
by Martin Wynne
Thu Aug 27, 2020 4:57 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 420
Views: 75792

Re: Brimsdown-The last grand project.

I was concerned with a shear like these that they would curl the sleeper strip that’s been cut up rather than leave it flat, as my PCB is quite thin like Tony’s. Some of these shears seem to be intended to cut up small panels rather that strips. I can make up a base and guide. What do you think? Hi...
by Martin Wynne
Thu Aug 27, 2020 2:15 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 420
Views: 75792

Re: Brimsdown-The last grand project.

Philip Hall wrote:This shear looks very good but I got frightened by the cost of it!

Hi Philip,

If you can improvise you own table and guides, these are less expensive:

https://uk.rs-online.com/web/c/power-to ... illotines/

Martin.
by Martin Wynne
Mon Aug 17, 2020 9:59 pm
Forum: Track and Turnouts
Topic: curved platforms
Replies: 8
Views: 609

Re: curved platforms

I am trying to produce plans using Templot. I tried the dummy carriage function but I can see any warning when curve becomes to severe even when I go to ridiculously small radii. I think that at some stage when doing something else there was some mention of a warning light, but I can not find it. I...
by Martin Wynne
Fri Aug 07, 2020 10:10 am
Forum: Track and Turnouts
Topic: Masokits etched chairs turnout construction
Replies: 21
Views: 1952

Re: Masokits etched chairs

Understanding which type of chair should be used and where, is what has caused most head scratching as I don't have much prototype knowledge and the instructions are brief, rightly saying there is plenty of information out there...but I haven't got it! - till I downloaded a C&L template from th...
by Martin Wynne
Fri Jul 10, 2020 11:34 pm
Forum: Track and Turnouts
Topic: Turnout construction - Question here please.
Replies: 152
Views: 32847

Re: Turnout construction - Question here please.

Hi Tony, In your latest post on your construction topic: https://www.scalefour.org/forum/viewtopic.php?p=77214#p77214 you say: The hardest part (of the vee) to bend is where the point and splice rail are physically soldered together, but it can be done. It's not prototypical to bend the splice area*...
by Martin Wynne
Fri Jul 10, 2020 10:51 pm
Forum: Track and Turnouts
Topic: Plywood sleepers
Replies: 11
Views: 892

Re: Plywood sleepers

trustytrev wrote:Many of the sidings in prototypical images appear to be actually lower than the main running lines.

Hi Trev,

That's done intentionally to provide gravity trap points -- wagons don't roll away uphill. :)

Martin.
by Martin Wynne
Fri Jul 10, 2020 2:35 pm
Forum: Track and Turnouts
Topic: Plywood sleepers
Replies: 11
Views: 892

Re: Plywood sleepers

I'm pretty sure you couldn't close the rivets in thicker sleepers, although I suppose you could epoxy them in (what a prospect after drilling the holes as well!). With thicker plywood (or model boat-building Limewood strip) it might be possible to use the push-fit Vero pins method instead of rivets...
by Martin Wynne
Sat Jul 04, 2020 4:01 pm
Forum: Track and Turnouts
Topic: Masokits etched chairs turnout construction
Replies: 21
Views: 1952

Re: Masokits etched chairs

So I wonder if there is anyone who is successfully using this way of making track - Masokits (or any other?) etched chairs on copperclad sleepers/timbers? Hi Julian, Paul Boyd has used the Masokits system for some complex pointwork. See his photo album here: https://www.flickr.com/photos/pjmarlow/a...
by Martin Wynne
Tue Jun 30, 2020 5:13 pm
Forum: Layouts and Operations
Topic: Kyle of Lochalsh MPD - track layout
Replies: 33
Views: 2004

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: 33
Views: 2004

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: 33
Views: 2004

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: 33
Views: 2004

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: 420
Views: 75792

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: 33
Views: 2004

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: 746

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: 746

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: 420
Views: 75792

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: 746

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...

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