Search found 370 matches

by Tony Wilkins
Wed Sep 23, 2020 4:40 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 427
Views: 77239

Re: Brimsdown-The last grand project.

Hi Phillip. That seems to do the job adequately. I guess if blades are not too expensive one could keep a spare or two handy. The smell will be created by the resin that bonds the glass fibers together, which is generally epoxy based with fiber glass boards. Not sure what they use for SRBP other tha...
by Tony Wilkins
Mon Sep 14, 2020 9:14 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 427
Views: 77239

Re: Brimsdown-The last grand project.

The other reason it needs to be this large is to house all the electrical gubbins I wanted to put in it. Here is a rough layout. DSCF1099.jpg As I don't have all the circuit boards done yet, some have had to have stand ins. DSCF1100.jpg I next cut holes in the rear panel for the multi-way connectors...
by Tony Wilkins
Thu Sep 10, 2020 9:57 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 427
Views: 77239

Re: Brimsdown-The last grand project.

I need to make the physical panel first and test out a few things. Tony. Well here's a start. DSCF1097.jpg The printout is one I made some months ago when I was trying out different designs using a combination of Templot, Photoshop and Paint. This does give an impression of how the control panel wi...
by Tony Wilkins
Wed Sep 09, 2020 9:37 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 427
Views: 77239

Re: Brimsdown-The last grand project.

Although not strictly railway modelling, electrics are part and parcel of the hobby. Having build the first relay card I decided to concentrate on building the remainder of the four relay cards needed for the storage yard control panel. There are four separate fans of turnouts altogether, two for ea...
by Tony Wilkins
Thu Sep 03, 2020 12:26 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 427
Views: 77239

Re: Brimsdown-The last grand project.

Thanks for posting that Keith. They are ridiculously cheap, way less than the value of the components. They would certainly do the switching but would still need some control circuitry. As requested David here is the circuit diagram. Relay card Din.PNG If you click on the picture once or twice you s...
by Tony Wilkins
Mon Aug 31, 2020 3:43 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 427
Views: 77239

Re: Brimsdown-The last grand project.

I realise this is outside many peoples comfort zone, but further progress on the electrical front. To go with the picture I posted of the first indicator display board, I have now build and tested, as best I can, the relay control card that partners it. DSCF1091.jpg The reverse side. DSCF1092.jpg Th...
by Tony Wilkins
Fri Aug 28, 2020 2:56 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 427
Views: 77239

Re: Brimsdown-The last grand project.

The proof of the pudding as they: so time to put it to the test. This the business side of the shear. DSCF1086.jpg It has an interesting reverse action compared with a traditional guillotine. The safety catch is visible to the right and the blade has quite a large radius to the cutting edge. DSCF108...
by Tony Wilkins
Fri Aug 28, 2020 11:28 am
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 427
Views: 77239

Re: Brimsdown-The last grand project.

I also didn’t realise (thank you, Martin) that the older PCB was still available, although thickness from Rapid doesn’t seem to be consistent, only within a range. For me, I already have the PCB in small sheets and obviously want to use that up, but I don’t actually know what kind it is. I suspect ...
by Tony Wilkins
Thu Aug 27, 2020 4:25 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 427
Views: 77239

Re: Brimsdown-The last grand project.

Hi Philip. I haven't tried mine as yet and like you expect some curl to result from trying to cut the sleeper width. I suppose I need to experiment and report back. I think I will need to improvise a sleeper width depth stop to get consistent results. However the plan was to cut sleeper lengths stri...
by Tony Wilkins
Thu Aug 27, 2020 1:55 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 427
Views: 77239

Re: Brimsdown-The last grand project.

Hi Philip.
Try this link.
https://uk.rs-online.com/web/p/pcb-shears/4727103/
Regards
Tony.
by Tony Wilkins
Wed Aug 26, 2020 6:00 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 427
Views: 77239

Re: Brimsdown-The last grand project.

I've got a lot of PCB to cut too but have a small table saw with a special blade. I will have to be careful with the dust so I guess it's outside with a mask on and the vacuum cleaner hooked up to the back of the machine. This shear looks very good but I got frightened by the cost of it! Philip Hi ...
by Tony Wilkins
Wed Aug 26, 2020 5:51 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 427
Views: 77239

Re: Brimsdown-The last grand project.

Meanwhile, back on the layout front. Having installed the additional wires to the storage yard baseboards, most were connected together and limited testing performed. I was able to run a loco down a couple of the long roads successfully. The limiting factor being the lack of a control panel. Decisio...
by Tony Wilkins
Wed Aug 26, 2020 1:25 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 427
Views: 77239

Re: Brimsdown-The last grand project.

Terry is closest. It's a PCB shear and will cut Fiber glass PCB sheet up to 1.6mm thick. I have a particular problem to solve. All my Bullhead track is assembled on 0.8mm ply sleepers and all my track thus far is Bullhead. Much of the scenic track has Flat bottom rail and mainly with the elastic spi...
by Tony Wilkins
Mon Aug 24, 2020 12:51 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 427
Views: 77239

Re: Brimsdown-The last grand project.

Well this is the latest "toy".
DSCF1082.jpg

Any guesses what this is intended for?
Tony.
by Tony Wilkins
Wed Aug 05, 2020 1:16 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 427
Views: 77239

Re: Brimsdown-The last grand project.

Decision taken. DSCF1063.jpg I began from the lifting flap end as I considered the two joints in close proximity to be the most critical area to get right. DSCF1064.jpg The excess ballast was then recovered with a dustpan and brush and the remainder of the track pinned down with pins released from t...
by Tony Wilkins
Wed Jul 22, 2020 3:38 pm
Forum: Track and Turnouts
Topic: Turnout construction - Bullhead rail.
Replies: 20
Views: 7931

Re: Turnout construction - Bullhead rail.

THREE THROW TURNOUTS. These are potentially a problem both from the construction and operational aspects. It has been a long time since I last built one and so I do not have any pictures of one under construction. Here are some pictures of the problem area, the switch blades, which are made speciall...
by Tony Wilkins
Wed Jul 15, 2020 8:48 pm
Forum: Track and Turnouts
Topic: Turnout construction - Bullhead rail.
Replies: 20
Views: 7931

Re: Turnout construction - Bullhead rail.

Before I go on to discuss some of the issues Three throw turnouts create, it is I think worth mentioning that the principle of interlacing of turnouts can be pushed further and there were historically examples of 4 way "Tandems" most notably perhaps at Kings Cross. I am so far aware of two...
by Tony Wilkins
Tue Jul 14, 2020 9:34 pm
Forum: Track and Turnouts
Topic: Turnout construction - Bullhead rail.
Replies: 20
Views: 7931

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: 20
Views: 7931

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: 427
Views: 77239

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: 1122

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: 152
Views: 33261

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: 20
Views: 7931

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: 427
Views: 77239

Re: Brimsdown-The last grand project.

Hi John.
Yes, home made.
I covered the origin of these on page 10, fourth entry.
Regards
Tony.
by Tony Wilkins
Sun Jun 28, 2020 3:51 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 427
Views: 77239

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 ...

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