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Track power connections across baseboard modules - Layout Design, Trackwork & Operation. - Getting You Started. - Your Model Railway Club
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 Posted: Sat Mar 3rd, 2018 08:25 am
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xdford
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Hello  Paul and Nigel
Paul, you wrote that the positions of the track changed but does that change the relative positions of the track blocks?   The wiring can be easily altered for this!  Having had a chance to think more about it do you want more switch isolating sections rather than rely on the points? 

Again this is not hard but I personally think that you should be able to manage a lot of operations within the scope of the initial layout.

I know I used your SCARM diagram but mainly as a guide for myself with regard to module joins and the position of points. I was initially going to delete it once I finished but thought some other otherwise anonymous members and visitors might not quite understand what "blue lines" were meant to represent so I left it there.

Looking how broad the curvature is particularly in the "West station", while not rescinding my concurrence, I think that the curves should be more than able to handle the dynamics of a train backing over the S curve. The practice as Nigel put it is probably more appropriate for train set curves or at least relatively sharp mainline curves.

As for the East station, that crossover  should  not present too much of a hassle for most combinations of a loco and a wagon and an 08 and a single 4 wheeler which is about all it will be capable of holding.  If those points were of the Set Track variety then I would wholly have to agree with Nigel as they are about as sharp as they can get but I would think still fairly reliable for the 08 and a wagon,

I've run this too much any way but do not be embarrassed to ask ... you might help someone who is and cannot help themselves by asking! 

Cheers and keep us posted!

Trevor

 

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 Posted: Sat Mar 3rd, 2018 06:43 pm
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Padster
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Hi Nigel ... again thanks for the clarification and also the hints .. will be making some slight design amendments based on this. The baseboards are all 9mm ply with 6mm ply cross-members and softwood blocks, treated with water resistant treatment. 
Well spotted - I also see I posted an early photo of the baseboard frame without the top plywood sheet fixed ... so you are actually looking at it from top down ... as such there are no gaps and solidly glued... I've edited the previous post with the correct photo now. 

Paul


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 Posted: Sat Mar 3rd, 2018 06:52 pm
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Padster
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Hi Nigel and thanks for the clarification and the observations - I'll amend my design slightly based on the baseboard suggestions.Baseboards are made from 9mm ply with 6mm ply for cross-members and softwood for the blocks, coated with water resistant treatment. I see I also posted the wrong photo which was of the early stages of the first baseboards - what it depicted was the frame carcass looking down .. with no top ply sheet attached as yet. I have updated the previous posting with the correct photo so you can now see the cross-member supports are correctly placed and solidly glued.

cheers
Paul  

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 Posted: Sun Mar 4th, 2018 01:41 am
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Padster
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Hi Trevor.. the re-positioning of parts of the track were relatively small and more like shifting slightly more north/south to allow a little more space and natural lines of track .. or east/west to more further away from the module joins or gain greater clearance under the baseboards for point motors, etc ... so in terms of the overall layout and block sections, nothing changes and we are all good still based on your electrical diagrams :-)  
Was more than happy for the SCARM diagram to be there and I knew why you did so ... certainly does give a new viewer to the thread the real context of what we are discussing.

Yes .. the curves are planned to more than handle the dynamics backing over the S curve for my operational desires ... as will the short crossover at the East station yard  - the single 08 and/or with an attached 4 wheel wagon will be fine - what you dont see on the SCARM is there is a large Grain store a little before that cross over where some wagons will be pulled in, the 08 then using the crossover to pass back and return to some other wagon duties.

cheers
Paul      

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 Posted: Sun Mar 4th, 2018 02:31 am
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BCDR
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Hi Paul,

S-bends (railway, not under the kitchen sink variety): They will work fine as long as the track radius is fine, which for N scale should be a minimum radius of 18", preferably 24". The issue is a simple practical one.The "no S over a module join" is a standard followed by all the modular groups that I'm familiar with. That said, most of them have the track towards the front, which is where Newton becomes an issue. There is also a potential issue with turnouts as part of an S where the points are incorrectly set.

Nice to see those cross-supports in place. You might want to sister-in a 3 or 6 mm section of ply on the inside of the ends - 12mm (0.5") thick is more normal, as well as on the underside of the end compartments for the terminal barrier strips, circuit breakers, kettle outlet, etc. If the top is 9mm that is not really enough depth for screws to bite into.

Nigel




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 Posted: Sun Mar 4th, 2018 02:57 pm
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Jon Miles
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Maybe a bit late to the party, but I used 3 pin XLR for the connections between boards. They maintain polarity and are lockable in place.

Rechargeable devices exist that use three-pin XLR connectors. These can be found on electric powered mobility wheelchairs and scooters. The connectors carry from 2 to 10 amps at 24 volts. I have found fine for DC power for the bus wires on the railway

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