Search found 353 matches

by Tony Wilkins
Tue Jul 14, 2020 9:34 pm
Forum: Track and Turnouts
Topic: Turnout construction - Bullhead rail.
Replies: 18
Views: 6260

Re: Turnout construction - Bullhead rail.

Now we need some switch rails. This necessitates making pairs of differing lengths. Always make them a few mm over length just in case. DSCF1022.jpg The near rail in the jig is for the far side switch and stock rail, the shorter rail is for the nearest switch rail. The longer rail is marked and trim...
by Tony Wilkins
Tue Jul 14, 2020 6:12 pm
Forum: Track and Turnouts
Topic: Turnout construction - Bullhead rail.
Replies: 18
Views: 6260

Re: Turnout construction - Bullhead rail.

THREE WAY TURNOUTS. The term three way turnouts is often misused and can be confusing as it is a generic term covering both Tandem and Three throw turnouts. Whilst they perform a similar function, there are significant differences between them. Three thrown turnouts have both pairs of blades togethe...
by Tony Wilkins
Mon Jul 13, 2020 10:24 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 382
Views: 65336

Re: Brimsdown-The last grand project.

Once the glue had dried board M could be detached and prepared for wiring. DSCF1046.jpg Rather than drill yet more fixing holes in the two end pieces I used previously, I used the leg supports turned upside down. I would like to be able to claim that this was a design feature, but the reality is tha...
by Tony Wilkins
Mon Jul 13, 2020 12:33 pm
Forum: Exhibitions
Topic: 2021 shows cancelled due to covid19
Replies: 3
Views: 533

Re: 2021 shows cancelled due to covid19

Don't wish your life away.
Tony.
by Tony Wilkins
Sat Jul 11, 2020 12:58 pm
Forum: Track and Turnouts
Topic: Turnout construction - Question here please.
Replies: 148
Views: 29397

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 Tony Wilkins
Fri Jul 10, 2020 9:59 pm
Forum: Track and Turnouts
Topic: Turnout construction - Bullhead rail.
Replies: 18
Views: 6260

Re: Turnout construction - Bullhead rail.

Further extension of this thread is long over due and I have difficulty believing it is over 2 years ago since my last post. Before going further, I shall briefly return to something I touched on previously, but did not go into much detail. There has been some discussion recently about curved pointw...
by Tony Wilkins
Sun Jul 05, 2020 10:28 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 382
Views: 65336

Re: Brimsdown-The last grand project.

Hi John.
Yes, home made.
I covered the origin of these on page 10, forth entry.
Regards
Tony.
by Tony Wilkins
Sun Jun 28, 2020 3:51 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 382
Views: 65336

Re: Brimsdown-The last grand project.

It also has to be considered that these slips are in the nominally hidden sidings, so prototype accuracy is less of a consideration than functionality. There is a double slip on the scenic part of the layout, in the goods yard, also bullhead rail fortunately, but this is a bit of a special case and ...
by Tony Wilkins
Sat Jun 27, 2020 6:12 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 382
Views: 65336

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 Tony Wilkins
Thu Jun 25, 2020 5:17 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 382
Views: 65336

Re: Brimsdown-The last grand project.

The next stage is to make the other half with the tubes. DSCF0693.jpg This was an early experimental one, before I managed to source some tube, using recovered Studiolith tubes, which are longer than I need. The first job was to cut some tubes to the desired length, in my case 16mm. This was done wi...
by Tony Wilkins
Thu Jun 25, 2020 3:28 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 382
Views: 65336

Re: Brimsdown-The last grand project.

The original Studiolith units were designed for 1/2" thick baseboards plus a 1/8" layer of cork. My baseboard tops are only 3/8" or 9mm thick plus 1/8" cork so 12.5mm nominal. I would thus need shorter tubes. The spacing would also need to be reduced from 24mm centers to allow fo...
by Tony Wilkins
Thu Jun 25, 2020 1:11 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 382
Views: 65336

Re: Brimsdown-The last grand project.

So that is the last of the straight storage yard baseboards, 8 down 16 to go. Next time I shall expand on the TOU arrangements. So ended the previous post, but before I do a quick update on progress. The 9th baseboard. DSCF1032.jpg DSCF1038.jpg Done. But it may not be quite so easy from here on in, ...
by Tony Wilkins
Thu Jun 18, 2020 12:56 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 382
Views: 65336

Re: Brimsdown-The last grand project.

The afore mentioned double slips. DSCF1012.jpg An earlier version of this area used turnouts, but took up twice the length thus shortening the siding length. Operationally a pair of Barry slips would have created the desired traffic paths, as the straight through roads on tracks 2 and 3 are not real...
by Tony Wilkins
Tue Jun 16, 2020 5:31 pm
Forum: Serjt-Dave
Topic: Pull the Other One!
Replies: 14
Views: 689

Re: Pull the Other One!

Hi Dave. I think you meant tactileness, another victory for the spellchecker? Yes, very nice piece of work. It is looking increasingly likely that I shall be building a lever frame for Brimsdown at some stage, 42 levers for that one, so 8 and a half frames. Just to add to the fun some of the levers ...
by Tony Wilkins
Thu May 28, 2020 10:14 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 382
Views: 65336

Re: Brimsdown-The last grand project.

A bit more on electrics now. Wiring up a simple live crossing turnout. This is actually not as simple as it may first seem. Why? Well there are actually three possible ways a turnout can be wired. Turnout wiring A.JPG A) is the simplest with the Vee crossing rails extended the length of the sidings....
by Tony Wilkins
Tue May 26, 2020 10:07 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 382
Views: 65336

Re: Brimsdown-The last grand project.

Each baseboard poses its own particular challenges. The latest one was due to the anti-sag ribs I installed near the end of this baseboard limiting the space available to mount a point motor. The hole above the point motor shows the first attempt, but the point motor would not fit. DSCF0998.jpg Fort...
by Tony Wilkins
Wed May 20, 2020 5:38 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 382
Views: 65336

Re: Brimsdown-The last grand project.

My actual power supply is home made and uses a different circuit to those shown / described for the split rail point motor supply and can be used with a center tapped transformer winding. The relevant section is shown diagrammatically below. This gives full wave rectification using a bridge rectifie...
by Tony Wilkins
Tue May 19, 2020 10:37 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 382
Views: 65336

Re: Brimsdown-The last grand project.

Hi Andrew. This is one of several topics that I have not explained yet, so no, you haven't missed it. The relays control the point motors and some isolation breaks. What we are getting into here begins to delve into the control philosophy of the layout, which in most respects is fairly traditional D...
by Tony Wilkins
Thu May 14, 2020 9:57 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 382
Views: 65336

Re: Brimsdown-The last grand project.

So what else have I been up to? Well I have been using the 8 relay control card for the initial (I began from the middle and worked outwards) Storage yard board as a pattern for the subsequent relay cards fitted to each completed storage yard board. As mentioned earlier, I have had to retrace my ste...
by Tony Wilkins
Sun May 10, 2020 11:57 am
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 382
Views: 65336

Re: Brimsdown-The last grand project.

Somebody doesn't know their resistor colour code! DaveB Precisely so. For those who don't, there has been a convention in the electronics world for many years of using colours to represent the numbers 0-9 as follows: 0 Black 1 Brown 2 Red 3 Orange 4 Yellow 5 Green 6 Blue 7 Violet 8 Grey 9 White. He...
by Tony Wilkins
Fri May 08, 2020 11:57 am
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 382
Views: 65336

Re: Brimsdown-The last grand project.

Among my collection of cable is ribbon cable, sometimes called rainbow ribbon cable due to the colours, rather than being plain grey with conductor 1 marked with a red stripe. I use this for jumper cable applications up to 10 way although I do have some 20 way where the colours repeat. My old stock ...
by Tony Wilkins
Fri Apr 24, 2020 3:30 pm
Forum: Track and Turnouts
Topic: Turnout construction - Question here please.
Replies: 148
Views: 29397

Re: Turnout construction - Question here please.

Hi Richard.
Yes, the track gauge pictured is a Brook Smith track gauge and was part of a set then available.
It also contained one as pictured above.
I thought the picture looked familiar.
Regards
Tony.
by Tony Wilkins
Wed Apr 22, 2020 3:19 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 382
Views: 65336

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 Tony Wilkins
Tue Apr 21, 2020 3:29 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 382
Views: 65336

Re: Brimsdown-The last grand project.

Now that I have more or less reached one end of the storage sidings, I have got to backtrack for a while and update baseboards already wired to include extra functions and associated wiring, before working my way in the other direction. I have used 38 and 56 way connectors thus far but have already ...
by Tony Wilkins
Tue Apr 21, 2020 2:35 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 382
Views: 65336

Re: Brimsdown-The last grand project.

Tony uses the contact style with eyelet designed for soldering. The back end protrudes from the housing so use of insulating sleeve is desirable. I prefer to use the crimp style contact pins as they are shorter, do not protrude and so no sleeve is required. They are intended for use with an expensi...

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