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murrayec

Modular OO Layouts

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Hi Dave

 

Looking again through the NMRA spec, they set the size of the boards at 610mm wide and 1220mm long which fits the supplied sheets exactly! Is that correct? and we stay within the standard adopting their size!

 

A sky-board or back scene board has not been shown on the drawings above- minimum = 200mm, nominal = 382mm as per NMRA. Though I reckon we should have a minimum, but some layouts may need a board higher than 382mm to compliment the scene?

 

murrayec

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Hi Guys

 

I watched a couple of vids last night and came across one of a guy building modules and he had a good point to say about alignment dowels;- 'using the C-Clamps eliminates the need for dowels, which can cause trouble if a builder gets them slightly off line. The forces in the clamp hold the boards rigid with no movement, thus eliminating the dowels and makes life easier'

 

murrayec

 

The only problem wth that way Eoin its much more difficult to align the modules before clamping. I use a boring machine for drilling out the holes for alignment dowels which gives perfect alignment. If someone wants to use their own baseboard I could supply a plate to go on the end of their baseboard with pre fitted alignment dowels.

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I use a boring machine

 

The UK Yellow Pages had this section for many years - until the Institution of Civil Engineers complained and got it removed.

 

2886768421_0170a64b6f.jpg

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Hi Dave

 

Yes, that's an idea to supply the plate, but its still up to the modeller to get that aligned with his track- could still lead to problems. Just thinking- if there is problems, we remove the dowels on that board?

 

Here is an interesting diagram for DCC from the Fremo site;- http://fremodcc.sourceforge.net/dcc_e.html and in this area a wealth of electrical stuff for modular building.

 

murrayec

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Hi Dave

 

Yes, that's an idea to supply the plate, but its still up to the modeller to get that aligned with his track- could still lead to problems. Just thinking- if there is problems, we remove the dowels on that board?

 

Or supply end-plates, with an alignment jig for the track position..?

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Hi Broithe

 

You got it- do it that way or we supply drawings to be downloaded with a full size template for the end-plates?

 

murrayec

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Of course, it doesn't have to be an either/or thing - some people might want to purchase full baseboards, but some might just want the end-plates to fit to their own boards, etc...

 

All that really matters is that the inter-board connections are reliably compatible.

 

If people are going to produce their own boards, then the height off the floor needs to be clearly specified and adhered to.

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I just did a calculation on an 8 coach DART;- it is 2157mm long so going on this a station platform would be over 3 boards to allow for trains of 8 coach and the engine.

 

You would get away with a two-coach today -

 

Irish Rail on Twitter - "DART capacity reduced due to driver issue this morning peak: mostly 4-carriage DARTs, with some 2-cars, apologies: "

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Yes Broithe

 

I saw that a couple of weeks back they announced 2 car units.

 

Can you imagine the modular system with a fleet of 20 two coach DARTs running!

 

That will be the number of units built by the end of the year if all preliminary orders go through!! Though some have gone to foreign homes, maybe in the future they'll bring them home for a reunion if the modular track is built.

 

murrayec

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The UK Yellow Pages had this section for many years - until the Institution of Civil Engineers complained and got it removed.

 

[ATTACH=CONFIG]9624[/ATTACH]

 

Ah here, we're in enough of a hole as it is at the minute ;)

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Hi all

 

Some more ideas

 

Electrics Proposal;-

 

The main line 2 track system is connected throughout the modules, the side tracks are controlled separately at each layout. The main line points are controlled separately at each layout also- this can be motorised or manual rod control from under the board through the rear down-stand of the boards.

 

Side tracks and accessories may be controlled by whatever means the modeller of that layout decides, but there can be no wired connection to the main lines- side tracks have to be insulated from the main. (except where DCC cab control is connected for hand-off)

 

220v power connectors and extension leads are to be at floor level and only the low voltage leads can rise to the board to run side tracks and accessories. Power leads are to be earthed and have a safety circuit breaker installed.

 

Track boosters again will be on the floor and the low voltage leads rise to the board.

 

Main line module leads are to be 300mm long max, so that these leads do not extend to the floor area where the 220v is. Parental Control plug blanks are to be used to close un-used sockets on all 220v plug boards

 

Cinch 320 connectors as per the NMRA specification seem to be hard to source, so we may need to go with another type! two pin speaker connectors- the type with a flat pin and a round pin could be an idea?

 

One main line track or possibly both should be wired so that the can run DCC or Analogue- but not at the same time.

 

Main Line wire colours;-

 

Inside line = Black & Red

Outside line = Blue & Yellow

 

These colours are exclusively for main line wiring, these colours are not to be used elsewhere on a layout.

 

What do you think?

 

murrayec

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Main Line wire colours;-

 

Inside line = Black & Red

Outside line = Blue & Yellow

 

These colours are exclusively for main line wiring, these colours are not to be used elsewhere on a layout.

 

Do you need to specify which rail is which colour?

 

I would assume that 'outside' means 'nearest the sea'..?

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Hi Broithe

 

Yes the outside track is nearest the sea- the viewing side of the layout.

 

I reckon specifying the wire colour will aid the modeller getting the connections right so that their layout integrates with no fuss. uniform colours will aid problem solving if a problem arises.

 

murrayec

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Ah, what I meant was - shouldn't you specify the colour for each rail, rather than just the pair of colours for each track?

 

You could end up with one of the inside track's rails being black on one layout and red on the next... etc.

 

As this ..?

 

red

 

black

 

---------

 

blue

 

yellow

 

---------

The Sea.

 

Or some such arrangement....

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Hi Broithe

 

Yes, sorry I miss read that, I will do that on the next issue of the drawings. We need to settle the direction the main track runs in- and have the polarity right for Analogue running;-

 

I'll suggest that the track runs say - Dun Laoghaire to Dublin direction!

 

murrayec

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Yes, sorry I miss read that,

 

No, my fault, I could have written it a lot less ambiguously. It does read like I was questioning "why bother with doing that..!!"

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Hi

 

We should also have it to the NMRA spec- this connecting wires is in the NMRA pdf in my previous post. This will actually dictate the polarity

 

murrayec

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Sounds promising so far guys...

 

I'd be willing to put up 'sponsorship' on behalf of the Forum / Site for Dave to produce the base boards for those willing to engage, commit to posting their progress and who knows, perhaps some day in the future (soon) exhibiting the group effort as an IRM community layout?

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Sounds promising so far guys...

 

I'd be willing to put up 'sponsorship' on behalf of the Forum / Site for Dave to produce the base boards for those willing to engage, commit to posting their progress and who knows, perhaps some day in the future (soon) exhibiting the group effort as an IRM community layout?

 

Hi BosKonay

 

Brilliant idea

 

Myself and Dave were discussing last week on pulling together a sample modular board to bring to the shows we exhibit in, so that people can see an actual module and how its done in the flesh. Anything you can do to assist on this would be appreciated and of course we would document it on the forum- that was the plan anyway.

 

We need to finish the specification first and then we will make it, possibly with the Martellow Tower diorama on it. We are looking at having it prepared for the Blackrock Show if we can- it wont be complete but it will help to promote the idea.

 

murrayec

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Sounds promising so far guys...

 

I'd be willing to put up 'sponsorship' on behalf of the Forum / Site for Dave to produce the base boards for those willing to engage, commit to posting their progress and who knows, perhaps some day in the future (soon) exhibiting the group effort as an IRM community layout?

 

Mighty generous Bosko! I will build a sample as Eoin said, I will have track on it and some scenery on it for Blackrock

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How did you fashion the dockside? Perhaps post your own thread to prevent this one going off topic? Would love to see more - and love the wiring!

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Wow! Walter

 

They are great- looks like you've been very busy. How many layouts and dioramas do you have? it seems to be endless

 

murrayec

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Hello,

I'm just finishing my proposal of Irish "fremo" document. I just have to finish some sketches. It should be ready before the end of next week.

Regards

Jack

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Those legs are standardized. 90% of polish moduls have the same one :) and never heard about any accident :)

 

thanks for the Info Jack,like the Kitchen adjustment

Walter

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