Ringbalin Light Railway

A place for the discussion of garden railways & any garden style/scale portable layouts
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tom_tom_go
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Re: Ringbalin Light Railway

Post by tom_tom_go » Wed Jan 29, 2020 10:44 am

You can use a 'check rail':

https://en.wiktionary.org/wiki/check_rail

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Re: Ringbalin Light Railway

Post by ge_rik » Wed Jan 29, 2020 5:45 pm

I think Greg H has some sort of post and wire barrier on his tall trestle. I'm sure he'll be able to elaborate more.

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Re: Ringbalin Light Railway

Post by BorisSpencer » Thu Jan 30, 2020 12:14 pm

Just thinking outside the box:
What about a layer of foam at the bottom of the trestle?
I mean something substantial like the innards of an old foam mattress, this should be available for free and could be roughly sculptured and stained/painted. It wouldn't be as effective as some form of catch fencing, but could potentially be less intrusive on the eye.
Thinking further, rather than a solid lump, a tray of foam "rocks". The source could be the same, but torn or cut into chunks.

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tom_tom_go
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Re: Ringbalin Light Railway

Post by tom_tom_go » Thu Jan 30, 2020 12:59 pm

Any reason why you would not want to use a check rail?

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GAP
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Re: Ringbalin Light Railway

Post by GAP » Thu Jan 30, 2020 10:05 pm

A check rail would add an element of safety.
The only issue I can see is that it will have to be over 13 feet in length and attach to plastic sleepers.
After saying that I do have some Code 250 track that has bad sleepers so I could use that up against the Code 332 rail on the trestle so the top of the rail heights might be about the same and not be a real issue as compared to using 332.
Might drag some of it out and have a play, definitely worth a go.

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Re: Ringbalin Light Railway

Post by tom_tom_go » Thu Jan 30, 2020 10:22 pm

The check rail can be pinned to the existing sleepers on the trestle. Drill out small holes along the underside of the check rail and solder brass nails to it?

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GAP
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Re: Ringbalin Light Railway

Post by GAP » Fri Jan 31, 2020 4:47 am

tom_tom_go wrote:
Thu Jan 30, 2020 10:22 pm
The check rail can be pinned to the existing sleepers on the trestle. Drill out small holes along the underside of the check rail and solder brass nails to it?
Did a trail fit this morning.

If I cut away some of the rail securing tabs then the Code 205 ends up at the same height as the Code 332.
There doesn't appear to be a lot of strength in the sleepers so I may have to reinforce and build up where I attach the check rail.
Luckily I have not fixed the rail to the trestle so I may be able to put epoxy (araldite) inside the hollow sleepers to make them sort of solid so I can drill into them and use brass screws.
I had a play and if I use a small screw either side the spacing works out just about right for the flanges to pass through with out interference (spacing provided by using countersunk screws).
The drill and solder brass pins is something I will have to look at.

As the trestle is about 1.5 Metres up in the air I am really treading the cautious path here, so may end up using a check rail and a barrier (thinking post and wire fence) to stop any spectacular swan dives.
Plus the track over the trestle is one continuous 12 foot length with a joiner at the beginning on a straight section before the curve.

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Re: Ringbalin Light Railway

Post by gregh » Fri Jan 31, 2020 11:13 am

I am going to be negative here.
I would think that check rails will just allow more junk (twigs, leaves, gumnuts) to get caught on the tracks and you'll finish with far more derailments than you would have without them.
If you have made up a trial piece of track with check rails, I suggest you do some bench tests trying to derail a loco with twigs etc, to see if check rail does hold the loco on the track.
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Re: Ringbalin Light Railway

Post by GAP » Fri Jan 31, 2020 8:40 pm

I have had a bit more of a play and adding check rails while possible would involve more engineering that constructing the trestle.
To get the check rails level I would have to build some sort of spacer over the top of the sleepers up to the level of the moulding that holds the rail in place, and cut the rivet detail off, all the way alongside each main rail then attach to that. I probably could use timber to simulate boards.
The trestle does have a number of neighbour's trees around it so twigs and leaves may become an issue.
Greg,
Do you have many problems with having no check rail, and do you have a description of the railing, on your trestle?

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Re: Ringbalin Light Railway

Post by GAP » Fri Jan 31, 2020 11:13 pm

Bit more research and experimentation going on.
I have found a couple of pictures of guard rails on bridges (one full size and 1 G scale) and now I am confused on their placement and how they would work considering the distance between the running rail and the guard rail.
I would have thought that the spacing would be the same as a wing rail on points.

https://i.pinimg.com/564x/07/86/3f/0786 ... c0a9a4.jpg
https://familygardentrains.com/primer/b ... drails.jpg

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Re: Ringbalin Light Railway

Post by gregh » Sat Feb 01, 2020 4:53 am

GAP wrote:
Fri Jan 31, 2020 8:40 pm

Greg,
Do you have many problems with having no check rail, and do you have a description of the railing, on your trestle?
long email sent Graeme
Greg from downunder.
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Re: Ringbalin Light Railway

Post by Soar Valley Light » Sat Feb 01, 2020 7:52 pm

GAP wrote:
Fri Jan 31, 2020 11:13 pm
Bit more research and experimentation going on.
I have found a couple of pictures of guard rails on bridges (one full size and 1 G scale) and now I am confused on their placement and how they would work considering the distance between the running rail and the guard rail.
I would have thought that the spacing would be the same as a wing rail on points.

https://i.pinimg.com/564x/07/86/3f/0786 ... c0a9a4.jpg
https://familygardentrains.com/primer/b ... drails.jpg
A lot of people think this but it's not the case.

A 'check' rail is used to guide the back of a wheel flange away from the opposite rail, for instance to protect the gap in a crossing nose or to reduce the risk of flange climb on the outside of a sharp curve.

A 'guard' rail is provided to catch a derailed wheel and guard against the derailed vehicle straying into danger - essentailly to keep it 'upright and in line'. To achieve this a bigger space is required between the rails than a standard flangeway gap. It also makes construction easier and cheaper in the 12" to the foot world as special chairs or baseplates are not required and there is room to fasten the rail down with standard fastenings (in the worlds of flatbottomed rail this is often achieved by dogging or screwing the guard rail direct onto the sleepers).

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Re: Ringbalin Light Railway

Post by GAP » Sat Feb 01, 2020 9:46 pm

gregh wrote:
Sat Feb 01, 2020 4:53 am
GAP wrote:
Fri Jan 31, 2020 8:40 pm

Greg,
Do you have many problems with having no check rail, and do you have a description of the railing, on your trestle?
long email sent Graeme
Thanks Greg I got it.

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Re: Ringbalin Light Railway

Post by GAP » Thu Mar 12, 2020 6:20 am

Progress Report #1
The "High" trestle looked a bit out of place with a rocky base under it and a track on level ground in front.
I decided to lower the roadbed in front and add a "Low" trestle to continue the rocky creek bed/gully theme, this will take the gully to the layout edge.

To make the low trestle I recovered a trestle that was used on my old layout, it was made out of plastic molding and looked shiny and un-natural so I scribed "wood grain" using a razor saw and painted it grey to try and get rid of the plastic shine.

The idea is to extend the rocks under the high trestle out under the low one, which will also curve across the corner.
I have some offcuts of synthetic turf that I intend to use under half of the high trestle to simulate a grassy creek bank.

All under the high Trestle that does not have rocks will be "Meadow" as well along whole length of the line either side of the low trestle.
Under the Low Trestle the will be rocks held by mesh and chicken wire.
The pile of the turf is a bit high and if it looks silly close to the sleepers I will paint a strip of brown and yellow along the edge to simulate poisoned grass.
Meadow at end of Low Trestle.jpg
Trestle Benchwork Lengthwise.jpg
Before and After.jpg
Benchwork with Bents roughed in.jpg
Last edited by GAP on Thu Mar 12, 2020 6:26 am, edited 1 time in total.

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Re: Ringbalin Light Railway

Post by GAP » Thu Mar 12, 2020 6:25 am

Progress Report #2
The benchwork that takes the line down from the low end of the High Trestle to the level of the lower line is complete.
It is a bit steep at 5% but its is a mountain line after all, so a whole heap of playing/testing will be required to see if it causes a problem for the trains.
Downhill.JPG
Downhill 1.JPG
Blog will be update in near future.

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