Search found 710 matches

by Martin Wynne
Sun Sep 22, 2013 5:53 pm
Forum: Track and Turnouts
Topic: trap point required?
Replies: 10
Views: 3777

Re: trap point required?

Is it feasible that a storm force wind could set an unbraked high-sided wagon rolling with sufficient momentum to run up a short gradient?

Martin.
by Martin Wynne
Sun Sep 22, 2013 5:09 pm
Forum: Track and Turnouts
Topic: trap point required?
Replies: 10
Views: 3777

Re: trap point required?

Russ Elliott wrote:I suspect a catch would have been provided to prevent a loco hauling some wagons out of the yard without signalled permission.

Hi Russ,

If the loco can't get in without the single line token, it has always got permission to come out again.

Martin.
by Martin Wynne
Sat Sep 21, 2013 6:54 pm
Forum: Track and Turnouts
Topic: Double track spacing
Replies: 2
Views: 2460

Re: Double track spacing

Hi jadlad, Templot (free) includes a "dummy vehicle" device which you can roll with the mouse along tracks of various radii and spacing to check the clearances visually on the screen. You can set the dimensions of the dummy vehicle to match your worst-case rolling stock: http://85a.co.uk/f...
by Martin Wynne
Tue Sep 17, 2013 10:54 am
Forum: Track and Turnouts
Topic: Modelling harbour points
Replies: 20
Views: 7834

Re: Modelling harbour points

I remember as a kid growing up in Worcester there was a line from Shrub hill that cut across the road and headed towards the old vinegar works. I was always fascinated by it. I think it had a signal to stop the traffic - not the trains. I might be wrong, it was a long time ago now! Yes, a GWR lower...
by Martin Wynne
Tue Sep 17, 2013 9:33 am
Forum: Standard Gauge Workbench
Topic: Drakelow
Replies: 47
Views: 21357

Re: Drakelow

But what, pray, is a "Barry Slip"? Hi Ian, Essentially it is two turnouts of the same hand reversed and interlaced. Here's a picture of a Barry Slip at Beverley: http://www.templot.com/forum_img/barry_slip.jpg So called (on the GWR at least) because they were common in the sorting sidings...
by Martin Wynne
Mon Sep 16, 2013 12:06 am
Forum: Track and Turnouts
Topic: Modelling harbour points
Replies: 20
Views: 7834

Re: Modelling harbour points

There is a specification for industrial standard gauge track with loose heel switches for setting into concrete, I don't know if Templot covers this. Drawings and dimensions for short industrial turnouts are at: http://www.templot.com/martweb/templot_forum.htm#industrial I don't know if turnouts sp...
by Martin Wynne
Fri Sep 13, 2013 6:19 pm
Forum: Track and Turnouts
Topic: Exactoscale check rail chairs
Replies: 17
Views: 6402

Re: Exactoscale check rail chairs

Just one question - how do you tell which of the "slots" in the CCL/CCR chairs are for the Check rail? Presumably - given how well engineered these things are - the "slot" for this rail is angled: but I have never really bottomed this. Hi Howard, Check rails are normally vertica...
by Martin Wynne
Mon Sep 09, 2013 7:10 am
Forum: Track and Turnouts
Topic: Building my first p4 points
Replies: 20
Views: 8927

Re: Building my first p4 points

He than supplies two special thin slide chair bases which fit on top of the sole plate. This avoids having to reduce the thickness of the sleeper. Hi Terry, That solves the modelling problem but it's not prototypical -- the prototype doesn't use special thin-based slide chairs/baseplates on solepla...
by Martin Wynne
Sat Sep 07, 2013 5:01 pm
Forum: Track and Turnouts
Topic: Building my first p4 points
Replies: 20
Views: 8927

Re: Building my first p4 points

Martin, How do you advise making the set in the stock rails? Hi Nick, Here's a simple idea which costs nothing and is a good way to make precise symmetrical bends in bullhead rail. It needs a bit of practice to know how hard to tap! :) Hopefully the diagram is self-explanatory. Just two bits of rai...
by Martin Wynne
Sat Sep 07, 2013 9:57 am
Forum: Track and Turnouts
Topic: Building my first p4 points
Replies: 20
Views: 8927

Re: Building my first p4 points

Some people model them, some don't, the further back you go in time the more likely your prototype didn't use them either. A steel soleplate does hold an accurate gauge much longer than a bare timber so reducing maintenance costs. Hi Nick, Modelling them is tricky because the timber must be dropped...
by Martin Wynne
Fri Sep 06, 2013 8:51 pm
Forum: Track and Turnouts
Topic: Building my first p4 points
Replies: 20
Views: 8927

Re: Building my first p4 points

http://www.templot.com/martweb/rea_chairs.gif These are the special chairs used for REA semi-curved bullhead switches. The numbers are the total for the whole switch, i.e an A switch has 5 P chairs per switch blade. P chairs are the ones on which the switch blade slides and to which the stock rail ...
by Martin Wynne
Tue Aug 06, 2013 11:33 pm
Forum: Track and Turnouts
Topic: Timbertracks (C&L and home cut)
Replies: 4
Views: 2554

Re: Timbertracks (C&L and home cut)

Is it the intention that once the track is laid the 'webbing' between the sleepers is removed? Hi David, Yes they are intended to be removed. Otherwise ballasting will be very difficult and the webs will remain visible. The difficulty and risk of damage in removing the webs from finished pointwork ...
by Martin Wynne
Sat Jul 27, 2013 7:28 am
Forum: Standard Gauge Workbench
Topic: Guidelines for the SGW
Replies: 23
Views: 19283

Re: Guidelines for the SGW

12. In order to give operational and visual interest, as well as encouraging the development of P4 modelling skills each participating layout must contain at least two working points. Trap or catch points are not counted as working points. Hi Paul, You need to clarify this for modellers outside the...
by Martin Wynne
Mon Jul 15, 2013 7:02 pm
Forum: Track and Turnouts
Topic: Old-fashioned Bullhead Turnouts
Replies: 62
Views: 24160

Re: Old-fashioned Bullhead Turnouts

I am in fact using Timber Tracks plywood plain track and turnout bases so they take care of setting out sleepering and will use a C&L turnout kit so the design side is pretty well taken care of. Hi John, Well yes and maybe no. Looking at the Timber Tracks site ( http://www.timbertracks.co.uk/in...
by Martin Wynne
Mon Jul 15, 2013 9:52 am
Forum: Track and Turnouts
Topic: Old-fashioned Bullhead Turnouts
Replies: 62
Views: 24160

Re: Old-fashioned Bullhead Turnouts

I am not going to make any more attempts to understand Templot I understand John. I know some folks find Templot too baffling and if I could only grasp where the stumbling block is I could do something about it. Many others do take to Templot -- for some it becomes almost an addiction. http://85a.c...
by Martin Wynne
Mon Jul 15, 2013 8:01 am
Forum: Track and Turnouts
Topic: Old-fashioned Bullhead Turnouts
Replies: 62
Views: 24160

Re: Old-fashioned Bullhead Turnouts

Hi John, http://gwsg.org.uk/Images/cvr_track_400px.jpg See: http://gwsg.org.uk/GWSG_Publications.html To print all the templates from Templot: http://85a.co.uk/forum/gallery/2/original/2_150357_460000000.png but nothing I did resulted in the whole group being printed. So I gave up. :( One quick ques...
by Martin Wynne
Sun Jul 14, 2013 8:58 pm
Forum: Track and Turnouts
Topic: Old-fashioned Bullhead Turnouts
Replies: 62
Views: 24160

Re: Old-fashioned Bullhead Turnouts

just had a look there myself in the hope of finding a template for catch points, preferably GWR pattern single blade type. I nearly got there with Templot but as usual the way that program works defeated me and I gave up. Hi John, You have only to ask on the Templot forum. Lots of friendly help the...
by Martin Wynne
Fri Jul 12, 2013 11:48 pm
Forum: Track and Turnouts
Topic: Old-fashioned Bullhead Turnouts
Replies: 62
Views: 24160

Re: Old-fashioned Bullhead Turnouts

How about it Martin, an interesting next development for Templot? I'm sure Bill could fill you in on the 3D print technicalities. Hi Will, Templot has always been able to export 3D DXF files for CAD. Here's one for example: http://www.templot.com/martweb/hopton_clee_tc8.jpg I just need another half...
by Martin Wynne
Mon Jul 01, 2013 11:29 am
Forum: Track and Turnouts
Topic: Old-fashioned Bullhead Turnouts
Replies: 62
Views: 24160

Re: Old-fashioned Bullhead Turnouts

A trap point will derail a loco or another vehicle if it runs too far forwards, and usually has two blades, as in the picture that John has posted. However this looks like an unusual place to have a trap point next to the end of a platform. Can anyone explain please? Hi Terry, John's picture is not...
by Martin Wynne
Mon Jun 17, 2013 1:47 pm
Forum: Track and Turnouts
Topic: Old-fashioned Bullhead Turnouts
Replies: 62
Views: 24160

Re: Old-fashioned Bullhead Turnouts

I presume the stretcher bars in that diagram are only different at either end because of the need for one end to pass though the other switch rail and if fitted to a single turnout would have the thicker section part at both ends. Would that be the case? Old-type GWR stretcher drawings on the Scale...
by Martin Wynne
Sat Jun 15, 2013 9:43 pm
Forum: Track and Turnouts
Topic: Old-fashioned Bullhead Turnouts
Replies: 62
Views: 24160

Re: Old-fashioned Bullhead Turnouts

They are old-type stretchers used on loose-heel switches. They fit though a slot in the switch rail, and are locked in position by rotating through 90 degrees, and driving a cotter pin. Here's a drawing of a GER three-throw with such stretchers: http://85a.co.uk/forum/gallery/2/original/2_280950_180...
by Martin Wynne
Sat Jun 15, 2013 1:47 pm
Forum: Trains: Model and Prototype
Topic: Recommended wheel cleaning solutions?
Replies: 21
Views: 9489

Re: Recommended wheel cleaning solutions?

the wheels (Gibson, steel tyres) have picked up a film of general oxidation and dirt. Not rusty, but a bit grimy. What I'm wondering is whether there is anything that could be applied with a cotton bud to take this off. Steel wheels + solvent cleaner = rust. I suggest a light lubricating oil on a c...
by Martin Wynne
Mon May 20, 2013 3:25 am
Forum: Other Workshop Practice
Topic: Photoetch artwork conversion - hard copy to dwg
Replies: 8
Views: 7147

Re: Photoetch artwork conversion - hard copy to dwg

Lots of promise, but unless you can get round the apparent freeware limitations this looks like a tool for the dedicated drawing converter who is prepared to shell out for a licence. Or is there some obvious switch to restore the freeware version's 'save' functionality that I have missed? Hi John, ...
by Martin Wynne
Sun May 19, 2013 7:00 pm
Forum: Other Workshop Practice
Topic: Photoetch artwork conversion - hard copy to dwg
Replies: 8
Views: 7147

Re: Photoetch artwork conversion - hard copy to dwg

Hi Rod,

Scan your original, and then use image vectorising software.

That can be expensive, but the free version of Wintopo is very good: http://wintopo.com

To avoid giving any personal details, download Wintopo from: http://www.wintopo.com/dl-wintopo.htm

regards,

Martin.
by Martin Wynne
Sun May 19, 2013 2:23 pm
Forum: Track and Turnouts
Topic: ratio plastic track bases
Replies: 16
Views: 7881

Re: ratio plastic track bases

You can get a slightly wider gauge in the Ratio track bases by using rail from SMP Scaleway, which is under scale width at 0.8mm* instead of 0.92mm width for exact scale BS-95R bullhead rail. SMP Scaleway are at: http://www.smpscaleway.com *Or at least, it always used to be. I haven't measured any r...

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