Search found 673 matches

by Martin Wynne
Wed Nov 21, 2018 2:27 pm
Forum: Track and Turnouts
Topic: seeking tandem turnout template
Replies: 18
Views: 4014

Re: seeking tandem turnout template

The diverging track and the straight through are exactly as the Exactoscale A5. The centre track is equidistant between the two tracks of the A5 at it clears the turnout. Hi Jon, Unfortunately that produces a sub-optimal tandem. Equidistant straight exits require the two V-crossings to be exactly o...
by Martin Wynne
Wed Nov 21, 2018 1:35 am
Forum: Track and Turnouts
Topic: seeking tandem turnout template
Replies: 18
Views: 4014

Re: seeking tandem turnout template

Hi Jon, We seem to be at cross-purposes. Are you saying that the first turnout in the tandem has to be an exact match to an Exactoscale A-5 turnout? In which case the second turnout will need to be something like a B-9 or B-10 to get an even spread of exit tracks (if an even spread is needed?). Or d...
by Martin Wynne
Tue Nov 20, 2018 11:27 pm
Forum: Track and Turnouts
Topic: seeking tandem turnout template
Replies: 18
Views: 4014

Re: seeking tandem turnout template

I like the idea that I came to this back to front. Actually I had a track plan with a straight though and a diverging A5, but the real world track plan had a tandem at this point. The A5 curve was fixed as was the straight. Hi Jon, If the A-5 is already on a fixed alignment, I'm afraid this tandem ...
by Martin Wynne
Tue Nov 20, 2018 2:22 pm
Forum: Track and Turnouts
Topic: seeking tandem turnout template
Replies: 18
Views: 4014

Re: seeking tandem turnout template

This may be a question better put in Templot Club than here (but I'm logged in now so I'll ask it anyway!) - how did you work out the second turnout had to be an A-7? Is it one of those things you just have to know , or am I missing something obvious (I usually do)? Hi David, Short answer: 1. guess...
by Martin Wynne
Mon Nov 19, 2018 10:35 pm
Forum: Track and Turnouts
Topic: seeking tandem turnout template
Replies: 18
Views: 4014

Re: seeking tandem turnout template

I printed it out and found it is slightly too large (it comes out at scale 5' gauge, or 20mm) Hi Jon, When you print it from your PDF reader, it is very important to make these settings in the print dialog (which are not the default in most readers): jon_tandem3.png However, now that you have insta...
by Martin Wynne
Mon Nov 19, 2018 5:50 pm
Forum: Track and Turnouts
Topic: seeking tandem turnout template
Replies: 18
Views: 4014

Re: seeking tandem turnout template

Hi Jon,

Templot can do that (it's free). For a single-sided tandem you need to start with the 2nd turnout, which in this case needs to be an A-7:

jon_tandem1.png


jon_tandem2.png

The timbering will need some final adjustments.

cheers,

Martin.
by Martin Wynne
Wed Oct 24, 2018 11:42 am
Forum: Product Information
Topic: Chairs and Rail
Replies: 51
Views: 12615

Re: Chairs and Rail

Please can someone point me to the guidance for adding proper links to a post? Hi John, Bob, Right -click on this tiny barely visible icon on the relevant post: s4_links.png Then select Copy Link Location . And simply paste it into your reply: https://www.scalefour.org/forum/viewtopic.php?p=63968#p...
by Martin Wynne
Wed Oct 24, 2018 2:18 am
Forum: Product Information
Topic: Chairs and Rail
Replies: 51
Views: 12615

Re: Chairs and Rail

Now, I am no engineer, but if Hi-nickel rail has a head profile which is incompatible with the profile of P4 wheels (i.e. too square-headed), would that not make a P4 profile wheel ride up on the root radius of its flange when the wheel is running against the rail? Hi Colin, I don't think that is v...
by Martin Wynne
Thu Oct 18, 2018 10:43 pm
Forum: Product Information
Topic: Chairs and Rail
Replies: 51
Views: 12615

Re: Chairs and Rail

It's sometimes hard to work out which is top and which is bottom so I find I can only do this in a good light - usually a bright 'daylight' lamp but sometimes the genuine article. Hi Jen, Try pressing the end of the rail into a bit of Blu-Tack. It is easy to see which is the rail head in the impres...
by Martin Wynne
Mon Oct 01, 2018 3:51 pm
Forum: Track and Turnouts
Topic: Templot demo at Scaleforum - 3-way tandem turnouts
Replies: 1
Views: 1405

Templot demo at Scaleforum - 3-way tandem turnouts

It seems that someone was asking about 3-way tandem turnouts on a Templot demo stand at Scaleforum. The demonstrator didn't mention that Templot now includes some automated functions to create tandem turnouts. If that person is reading this, please see: http://templot.com/companion/3_way_tandem_turn...
by Martin Wynne
Fri Sep 21, 2018 4:11 pm
Forum: Layouts and Operations
Topic: Traverser locking
Replies: 10
Views: 3115

Re: Traverser locking

hi Monty, Cut one of these, or one similar, into 3 sections: https://i.ebayimg.com/images/g/Do4AAOxyVLNSrnBI/s-l500.jpg https://i.ebayimg.com/images/g/3NQAAOSwXudbDPcz/s-l500.jpg Middle section goes on the fixed baseboard part, end sections give you 2 locators on the traverser/turntable part. Mechan...
by Martin Wynne
Wed Sep 19, 2018 12:24 pm
Forum: Track and Turnouts
Topic: Working point rodding from DCC Concepts
Replies: 8
Views: 3037

Working point rodding from DCC Concepts

DCC Concepts have just released a new system of working point rodding. Or at least I assume it's new, otherwise why have they suddenly sent me an email about it?

It looks interesting, see:

https://www.dccconcepts.com/wp-content/ ... se-2-1.pdf

Martin.
by Martin Wynne
Tue Sep 11, 2018 9:47 am
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 420
Views: 75783

Re: Brimsdown-The last grand project.

I obtained my Sundeala from Ashford Model supply centre, but it appears they are no longer trading, so not sure what to suggest. Hi Tony, Philip, Cut sizes of Sundeala available delivered from Amazon: https://www.amazon.co.uk/Sundeala-Board-Pinboard-Notice-1220mm/dp/B018IPZC8S/ I don't know how the...
by Martin Wynne
Sat Sep 08, 2018 5:39 pm
Forum: Track and Turnouts
Topic: "Wye" Turnout templates
Replies: 6
Views: 2223

Re: "Wye" Turnout templates

but I run a Mac which gets indigestion with Templot Hi David, Here's a 1:4.5 symmetrical Y-turnout from Templot (radius 1595mm, 63"): http://85a.co.uk/forum/gallery/2/original/2_081324_390000000.png Here's the PDF file to print it: y_turnout_p4_4p5.pdf Any other size easily created. Just ask. ...
by Martin Wynne
Fri Sep 07, 2018 3:15 pm
Forum: Track and Turnouts
Topic: Ballasting ply sleepered track
Replies: 28
Views: 6246

Re: Ballasting ply sleepered track

I have a stash of Copydex but a number of things put me of using it: 1. The odour 2. Questions on whether it can be and how to dilute it 3. You can't drill into it Hi Peter, 1. the smell goes away as it dries. 2. it can be diluted with water. 3. drilling the dried latex film is no problem if you sp...
by Martin Wynne
Fri Aug 24, 2018 7:59 pm
Forum: Vehicle dynamics and trackholding
Topic: Do we need 1:20 Rail Inclination
Replies: 38
Views: 10812

Re: Do we need 1:20 Rail Inclination

From the angle at which the pictures are taken, probably not possible. I would have thought that you would need to see a section of rail end on to see the angle. Hi Terry, That was exactly my point. The only place you are going to see inclined rail end-on is on wing rails -- which is precisely the ...
by Martin Wynne
Fri Aug 24, 2018 6:48 pm
Forum: Vehicle dynamics and trackholding
Topic: Do we need 1:20 Rail Inclination
Replies: 38
Views: 10812

Re: Do we need 1:20 Rail Inclination

so it will be very interesting to see if there are any noticeable differences in the running between the different track sections and rail profiles. Hi Tony, And interesting to see if anyone can see the visual difference. Bearing in mind that the most obvious rail ends are on check rails, which sho...
by Martin Wynne
Thu Aug 09, 2018 7:46 am
Forum: Vehicle dynamics and trackholding
Topic: Do we need 1:20 Rail Inclination
Replies: 38
Views: 10812

Re: Do we need 1:20 Rail Inclination

Really not sure what I'm doing ... but following your advice my set bends and knuckle bends are definitely working and I am definitely using Exactoscale chairs and definitely not using ' the proper conical press tools ' :o .... :D Hi Tim, If there is a knuckle bend in inclined rail, the head of the...
by Martin Wynne
Wed Aug 08, 2018 9:47 pm
Forum: Vehicle dynamics and trackholding
Topic: Do we need 1:20 Rail Inclination
Replies: 38
Views: 10812

Re: Do we need 1:20 Rail Inclination

I don't need to. It is logic. A wheel with a 1 in 20 cone will touch a vertical rail on a knife edge. If both have the same inclination the contacted area is larger. Which will reduce the contact pressure and make electrical pick-up actually worse. The minimal knife edge contact has a very high con...
by Martin Wynne
Wed Aug 01, 2018 9:05 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 420
Views: 75783

Re: Brimsdown-The last grand project.

Tony Wilkins wrote:One of the things I love about these threads is the gems that come to light along the way......sweet making factory, I think it was Bassett’s, where they made pear drops. You could always tell what flavour sweet they were making that day from the smell.

by Martin Wynne
Sun Jul 01, 2018 12:34 pm
Forum: Layouts and Operations
Topic: Construction of a Test Track
Replies: 611
Views: 118196

Re: Construction of a Test Track

An interesting hypothesis Martin .... though it does beg the question as to why the narrowing is so localised? Hi Tim, That question applies equally to any other explanation -- shrinkage of plywood, expansion of rail, etc. Perhaps a section of chairs from a different batch? An interesting finding w...
by Martin Wynne
Sun Jul 01, 2018 10:37 am
Forum: Layouts and Operations
Topic: Construction of a Test Track
Replies: 611
Views: 118196

Re: Construction of a Test Track

Interestingly I have found a couple of areas on my track where gauge narrowing has occurred over the last 2 or three weeks that were fine before :shock: I have separated the chairs from the sleeper and re bonded to gauge and all is fine. Slightly confused as to why this might have happened with the...
by Martin Wynne
Sun Jun 24, 2018 11:16 pm
Forum: Layouts and Operations
Topic: Ulpha Light Railway
Replies: 188
Views: 38769

Re: The Ulpha Light Railway

but trying to reverse engineer an existing Temploted layout accurately, I have found that using X-Y co-ordinates and counting sleeper / timbers the most reliable method. Hi Tony, If you have a scanner, try taking a series of A4 rubbings from the rails, and scanning them: https://images-na.ssl-image...
by Martin Wynne
Wed Jun 06, 2018 7:08 pm
Forum: Layouts and Operations
Topic: Construction of a Test Track
Replies: 611
Views: 118196

Re: Construction of a Test Track

One observation reading through all the above would be that designing a box diagram by committee probably gets a good result in the end - but it is not necessarily a quick process, and collateral casualties might temporarily include a few friendships! And do you number the levers left-to-right as s...

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