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  • RMweb Gold

 

Cap’n can you explain why you need the support beams and don’t simply put the baseboardson trestles?

 

Puzzled of Calne

 

Well, the thinking was that not having the support beams could put too much stress on the board joint between the main scenic board and the fiddle yard and would also ensure that both sit nice and level.

 

It occurred to me when I was posting the photos that I might get asked this and I could certainly have tried it without the beams, but decided to play it safe.

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  • RMweb Gold

No I agree. I would use support beams. The base boards are not under any stress and it will be a lot easier to assemble by sliding the boards on the beams. I must say they look fab. I am looking to revise my rather crude jobbies. I may well pinch a few ideas if that is okay.

 

 

Rob.

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I agree with the captain and rob the beams are necessary to distribute the baseboard weight and prevent stress and strains on the join of the baseboards.

Track laying soon Capt'n?

 

Steve

I'd do a bit of trial and error with the trestle positions to minimise the stresses on the pinned hinge joints on the subframes themselves too.

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  • RMweb Gold

I'd do a bit of trial and error with the trestle positions to minimise the stresses on the pinned hinge joints on the subframes themselves too.

I think the screws into the wood are more likely weak points than shearing the pins.

It's fairly easy to minimise the strain though by placing the trestles approximately under the CofG of each baseboard. You'd have to wait until the boards are finished though and stick a long dowel under each one and move it along until the board just about balances on it.

I did a similar idea with Lulworth where the two outer boards are supported centrally and the middle board just stops them tipping either way :)

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  • RMweb Gold

I place my trestles roughly four feet apart and let the beams over hang.

 

 

Rob.

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The supporting beams, which rest on the trestles, are made of 9mm birch ply and are hinged for storage. Here they are, still folded:

attachicon.gif20180724_184507.jpg

 

When you unfold them, they look like this:

attachicon.gif20180724_184620.jpg

 

That is a very ingenious space saving system Cap'n. :sungum:  For the record, an alternative method that we employ on Balcombe (admittedly a tad bigger that BS!) is 2m lengths of 25mm² mild steel tube.

We did investigate fancy methods of fitting them to the trestles but ended up doing it with countersunk M6 set screws just dropped in through the tube (with countersunk holes) and trestle top cross pieces. (KISS!) 

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The beams are of 12mm birch ply, precision-cut to size by TimberCut in Marsh Barton, Exeter. Where they are hinged, I've doubled up on the thickness of ply, to enable longer screws to be used to hold the main hinges in place.

 

Thanks for the suggestions about centre of gravity, last night was the first time it had been set up, and I will look further into this and probably mark the beams with the optimum location for the trestles in future.

 

The layout itself is 7' long, including fiddle yard, so the 8' beams give me 6" at either end. There will probably be some kind of cloth covering the support beams and trestles at shows, so the small space at either end could be used for layout information etc.


Track laying soon Capt'n?

Yes indeed, that's the idea!

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Morning CK.

 

From my own experience(!), you may need to consider some kind of 'positive stop' on the rearmost beam for the rear of BS to abutt against. This is one mod I am considering. The issue I have is the differing baseboard widths..

 

 

Rob.

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I've liked the idea of beams you just plonk the boards onto for a while and the fold flat solution is just what I needed to solve the last barrier. :)

Simple ideas that assemble so fast.

Edited by PaulRhB
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  • RMweb Gold

I've laid the first piece of track - the tandem turnout. All other track on the layout will flow from this. More anon.

 

I bet that made the eyes water. :ireful:

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  • RMweb Gold

What do you need?

SPST (ie. 'on/off' ones) - about 8 and DPST (again, 'on/off' ones, only for two wires), about 4 of them.

 

This may vary, of course, once my non-electrically minded brain realises other things about the wiring that might be necessary.

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  • RMweb Gold

I have some quite large 'old skool' toggle switches recovered by Great Aunt Bertha from a crashed Hawker Hart in the Sudan in 1932. They remind me of her, Robust construction, well presented and not easy to flick over.

 

I shall dig them out.

 

 

Rob.

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  • RMweb Gold

Those subframes are a great idea as others have sad and 'save' a set of legs. I remember Iain Rice had a similar scheme sketched in one of his layout design books called Ulysses - Universal Layout Support System or something like! You could consider some form of tabs or slots in the layout frame that would engage onto the subframe to prevent movement.

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  • RMweb Premium

I now find that I am significantly short of toggle switches for the control panel.

 

I will purchase some.

 

Rapid Online offer a very good service and are very reasonable cost wise.

 

https://www.rapidonline.com/

 

No connection, just a very satisfied customer. If you order this morning, there's a good chance you could have them by Saturday.

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  • RMweb Gold

No, no and thrice no to a third Peckett!

 

The directors of the Vale of Radnor Light Railway have distinctly said that they cannot justify the second one, let alone a third. Get on with more track laying, you idle blighter and stop worrying about Pecketts!

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