FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Gated level crossing on curved double track

 
Post new topic   Reply to topic    Model Trains Interactive Forum Index -> Modelling Tips
View previous topic :: View next topic  
Author Message
ruedetropal



Joined: 22 Oct 2006
Posts: 814
Location: Accrington, Lancashire

PostPosted: Sun Feb 14, 2016 8:00 pm    Post subject: Gated level crossing on curved double track Reply with quote

One of the things at back of my mind when I have been developing my mechanism for a level crossing is curved track, in particular double curved track. Now given that radius is way sharper than real, there are bigger problems with clearance at sides. Possibly one reason why most models have crossing on straight. Peco cheat by using short gates which are OK for singe track, but not really suitable for double.
Then this month in Model Rail magazine, Paul Lunn has a plan with a level crossing on a curve. He makes the point that in effect it would have to be bodged from other parts, but got me doing some drawings.
Using the standard Hornby double track crossing, the gates would still be outside the track, but probably too close.
For my tests I bought a Dapol(ex Airfix) level crossing. Gate length is same as Hornby, so it is a good example to pla with. I had forgotten, but Airfix had made provision for the crossing being used for double track. The distance between the tracks is greater than standard now, but I wondered if it would fit curved track.
Finding dimensions of items should be easy, but they are not always stated. Luckily I found dimensions of the Hornby double track tunnel mouth, whoch was 143mm. This would be a good minimum distance for level crossing gates. The Dapol gates are in effect 75mm long, so only an odd mm longer, if doubled up.
Now fitting it all together and it looks possible. The nearest the gates will be to track centre is about 30-35mm. It might be possible to reduce this , but then I would have to make (or design for 3D printing) my own gates. The Dapol level crossing kit is not bad, and requires very little modification.

All I then need is the level crossing base. It might be possible to build one, but I can design base for 3D printing. I would like to make this as easy as possible. This will be about 160mm wide and 120mm across track. All that would be needed was to slide rail into place. On the outside of the curve, the Dapol level crossing base is just about right depth, but on the inside, it would need some cutting. It would also be possible to use just the 2 Dapil kits, plus a bit of extra plastic.

As I don't have a track or any very long coaches I am not sure if this would work. Any ideas.
_________________
Simon Dawson
Will try anything once, looking for the ultimate easy to set up portable exhibition layout, preferably French narrow gauge and with lots going on, not necessary on the rails.

http://www.rue-d-etropal.com
Back to top
View user's profile Send private message Visit poster's website
Andy in Germany



Joined: 20 Aug 2007
Posts: 523
Location: Stuttgart

PostPosted: Mon Feb 22, 2016 7:50 pm    Post subject: Reply with quote

I vaguely remember seeing a picture of a crosing with gates overlapping considerably when they were over the road: they matched when blocking the track. I giuess that was to deal with the much broader track bed, but it could also be used to solve the clearance on curves.

Or you could make like the Ffestiniog and not even attempt to make the gates remotely big enough for the road, just have them long enough to cover half the road and block the trackbed otherwise.
_________________
Andy in Germany
More railway misadventures on:
www.korschtal.wordpress.com
Back to top
View user's profile Send private message Visit poster's website
ruedetropal



Joined: 22 Oct 2006
Posts: 814
Location: Accrington, Lancashire

PostPosted: Wed Feb 24, 2016 1:55 pm    Post subject: Reply with quote

I think main thing was to block the road, not the track, but for neatness and efficiency, gates would meet up.
For the curved crossing, the Dapol(ex Airfix) level crossing is right size. It even has enough road surface plastic to do the full double track using 2 kits, which is what it was designed to do. It has fittings for both single and double track.
For straight track it resulted in a big gap between tracks , but for curved, it is about right.
I am down at Eurotrack exhibition this weekend, and hopefully will have some level crossing bits(Shapeways are dispatching them today). I won't have a curved crossing, but if the parts I have already work OK then that will be next.
_________________
Simon Dawson
Will try anything once, looking for the ultimate easy to set up portable exhibition layout, preferably French narrow gauge and with lots going on, not necessary on the rails.

http://www.rue-d-etropal.com
Back to top
View user's profile Send private message Visit poster's website
CRACKED



Joined: 12 Jun 2013
Posts: 130
Location: Lowestoft, Suffolk

PostPosted: Thu Feb 25, 2016 2:01 am    Post subject: Reply with quote

There was a need to block both road and railway. It was very common until the late 50's for livestock to be herded along roads. Cattle guards and grids only seem to have come in the earlier 1900's or later. In Northumberland cattle grids were originally known as "Canadian Gates" as they were introduced by the Canadian Forest Corps during WW!.
_________________
Clive
Back to top
View user's profile Send private message
Blackcloud Railways



Joined: 25 Oct 2006
Posts: 1983
Location: Sandbach UK

PostPosted: Thu Feb 25, 2016 9:30 am    Post subject: Reply with quote

Cheshire farmers still do herd livestock along public roads, and I'm not just talking about back lanes either. A while ago I encountered such a herd being escorted along the A556... This is no quiet country backwater but the link between the M56 and the M6, a slightly more busy road with a 50mph limit that is ignored away from the speed cameras.

A herd of cows being taken in for milking is a much more effective way of slowing traffic down.
Wink

Back on track, the crossing where the single track Waterside branch met the road as it left Mottram yard had gates which overlapped when across the railway because the road was double the width of the line but the gates at Torside had a big gap in the middle when across the line where a two lane road crossed a wider rail formation.
_________________
Bob Hughes
Playing Trains

Once there were mountains on mountains and once there were sunbirds to soar with and once I could never be down.
Back to top
View user's profile Send private message Visit poster's website
ruedetropal



Joined: 22 Oct 2006
Posts: 814
Location: Accrington, Lancashire

PostPosted: Thu Feb 25, 2016 10:18 am    Post subject: Reply with quote

Bob, I know the road, I think, if it the one going South from M56 down to M6. Given the housing round there, it must also hold up up of those Chelsea Tractors!
On a model a moving(very slow) herd of cattle might make an interesting feature.

Overlapping gates were probably quite common, yet are not modeled that much. Again it could be made to operate. Only thing is these types were probably hand operated, not by a wheel in a signal cabin next to level crossing.

The Peco system does take it to the extremes as I would like to see a real example of a crossing with such short gates and a very big gap across track.
_________________
Simon Dawson
Will try anything once, looking for the ultimate easy to set up portable exhibition layout, preferably French narrow gauge and with lots going on, not necessary on the rails.

http://www.rue-d-etropal.com
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    Model Trains Interactive Forum Index -> Modelling Tips All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group