RMweb Gold The Stationmaster Posted February 7, 2015 RMweb Gold Share Posted February 7, 2015 Showing the West end of platforms 16 & 17 at Clapham Junction looking towards the Brighton Slow lines (a goooood long while ago)............................. ??? Banking / pilot engine release siding for trains coming up from the WLL ?? Alas I can't lay hands on a Working Over Book which might cover it the only immediate source I have is the 1934 Southern Appendix and assisting in the rear was not authorised there at taht time. It could obviously be a post-war, or wartime alteration to both layout and authorities but nothing run to earth on that as yet. Link to post Share on other sites More sharing options...
eastwestdivide Posted February 7, 2015 Share Posted February 7, 2015 Don't know if it counts as unusual, but it's certainly a tight squeeze round the double-track triangle on Sheffield's tram system: 5 Link to post Share on other sites More sharing options...
olivegreen Posted February 7, 2015 Share Posted February 7, 2015 There's another fascinating one in Auckland, which could be adapted to modelling situations: see - http://www.signalbox.org/overseas/nz/newmarketjcn.htm (Not sure where we stand on copyright, so haven't copied the photo/layout plan here) 1 Link to post Share on other sites More sharing options...
Osgood Posted February 7, 2015 Share Posted February 7, 2015 Another tram junction (or half of it) - this time in Basel, Switzerland. The key should help you work out where I was standing. 5 Link to post Share on other sites More sharing options...
jim.snowdon Posted February 7, 2015 Share Posted February 7, 2015 Or, as tramway engineers would know it, a half Grand Union. A full Grand Union is considered the tramway engineer's star turn, being a crossing of two routes with connections at every corner. They aren't common, but Prague has at least two, as well as several 3/4 Grand Unions, an example of which appears below - They are often home to some quite congested crossings, including examples such as this, where three rails cross at almost the same point Regards, Jim 10 Link to post Share on other sites More sharing options...
eastwestdivide Posted February 7, 2015 Share Posted February 7, 2015 ... They are often home to some quite congested crossings, including examples such as this, where three rails cross at almost the same point ... Comfortable to cross? Potential for derailments? Looks horrendous to this non-expert. Link to post Share on other sites More sharing options...
Judge Dread Posted February 7, 2015 Share Posted February 7, 2015 Not so complex but more "Brio". Taken outside the depot in Ostend on the Coast Tramway. 4 Link to post Share on other sites More sharing options...
jim.snowdon Posted February 7, 2015 Share Posted February 7, 2015 Comfortable to cross? Potential for derailments? Looks horrendous to this non-expert. Yes - as with most traditional tramways, these crossings are flange running, ie the wheel is supported on the flange tip, not the tread. Derailments,none, as the crossing is fully checked on all three routes. Jim Link to post Share on other sites More sharing options...
talisman56 Posted February 8, 2015 Share Posted February 8, 2015 Showing the West end of platforms 16 & 17 at Clapham Junction looking towards the Brighton Slow lines (a goooood long while ago)............................. ??? Banking / pilot engine release siding for trains coming up from the WLL ?? If that's where I think it is off the easternmost platforms at CJ (16/17?) then might possibly be for allowing run-round off the 'Kenny Belle' without fouling the Brighton Main Lines. If the Clapham Junction-Olympia shuttles couldn't get into Platforms 1/2 then they were routed over to the Brighton side of the station... Link to post Share on other sites More sharing options...
Brian Harrap Posted February 8, 2015 Share Posted February 8, 2015 Or, as tramway engineers would know it, a half Grand Union. A full Grand Union is considered the tramway engineer's star turn, being a crossing of two routes with connections at every corner. They aren't common, but Prague has at least two, as well as several 3/4 Grand Unions, an example of which appears below - IMG_1552r.JPG They are often home to some quite congested crossings, including examples such as this, where three rails cross at almost the same point IMG_1551r.JPG Regards, Jim Hello Jim, I saw an untitled shot of this location years ago on some Photo site or other and have for ages have been trying to work out where it was, so thanks for posting and clearing that up for me. Where to fit it (the 3 rails crossing bit) on the layout is the next thing to work out. Brian. 1 Link to post Share on other sites More sharing options...
RJS1977 Posted February 8, 2015 Share Posted February 8, 2015 (edited) Another tram junction (or half of it) - this time in Basel, Switzerland. The key should help you work out where I was standing. Tram Lines 2.jpg There used to be one of these at the junction of Broad Street and West Street in Reading (i.e. outside Broad Street Mall). An overweight policeman used to stand in the square created where the north-south and east-west lines crossed to direct the traffic and the tram drivers used to take great delight in timing their trams to pass either side of him to make him breathe in! Edited February 8, 2015 by RJS1977 1 Link to post Share on other sites More sharing options...
RJS1977 Posted February 8, 2015 Share Posted February 8, 2015 Don't know if it counts as unusual, but it's certainly a tight squeeze round the double-track triangle on Sheffield's tram system: triangle.jpg 101_2962.jpg There are similarly sharp curves (without the straight side of the triangle) on Croydon Tramlink where the town centre street lines join the tracknbed of the New Annington branch. Link to post Share on other sites More sharing options...
RMweb Gold Re6/6 Posted February 8, 2015 Author RMweb Gold Share Posted February 8, 2015 Another 3/4, this time in Chicago. 10 Link to post Share on other sites More sharing options...
Talltim Posted February 8, 2015 Share Posted February 8, 2015 Quick link to the recent thread on Barry Slips http://www.rmweb.co.uk/community/index.php?/topic/93181-barry-slips-at-barry/ Link to post Share on other sites More sharing options...
RJS1977 Posted February 8, 2015 Share Posted February 8, 2015 Another 3/4, this time in Chicago. Chicage El CTA_loop_junction 1.jpg Where abouts in Chicago is that? I may have been through it! Link to post Share on other sites More sharing options...
talisman56 Posted February 8, 2015 Share Posted February 8, 2015 Another 3/4, this time in Chicago. Chicage El CTA_loop_junction 1.jpg The skateboard ramps (on top of the building behind the signalling tower) are suitably big in America... Link to post Share on other sites More sharing options...
Talltim Posted February 8, 2015 Share Posted February 8, 2015 (edited) I've come across Gantlet or Gauntlet track a lot, both where 2 tracks narrow to 1.5 tracks, or a line splits at allow wider trains to pass full height platforms but not this double Gauntlett http://en.wikipedia.org/wiki/Gauntlet_track#mediaviewer/File:Sechsschienengleis.JPG I was a bit confused about the necessity of having a platform either side of a single track line, but the trams only have doors on one side and turn at the ends of the line Edited February 8, 2015 by Talltim 3 Link to post Share on other sites More sharing options...
talisman56 Posted February 8, 2015 Share Posted February 8, 2015 I've come across Gantlet or Gauntlet track a lot, both where 2 tracks narrow to 1.5 tracks, or a line splits at allow wider trains to pass full height platforms but not this double Gauntlett http://en.wikipedia.org/wiki/Gauntlet_track#mediaviewer/File:Sechsschienengleis.JPG I was a bit confused about the necessity of having a platform either side of a single track line, but the trams only have doors on one side and turn at the ends of the line Bi-directional track? Link to post Share on other sites More sharing options...
johnb Posted February 8, 2015 Share Posted February 8, 2015 Where abouts in Chicago is that? I may have been through it! It's at one corner of the EL Loop where the the elevated line completely circles the part of Chicago, known for obvious reasons as 'The Loop'! I am not sure which corner but I have been over it twice(!) during an architectural tour of the loop by special train that circled the Loop twice. One circuit the guide was talking about features on the inside of the loop, the second circuit those on the outside. A brilliant trip, but don't think they do it now. It started and finished at Randolph Street and took about an hour. 1 Link to post Share on other sites More sharing options...
Brian Harrap Posted February 8, 2015 Share Posted February 8, 2015 Another 3/4, this time in Chicago. Chicage El CTA_loop_junction 1.jpg Thats tower 18. Junc 54th/Cermak. Very noisy when trains pass I remember. B 1 Link to post Share on other sites More sharing options...
RJS1977 Posted February 8, 2015 Share Posted February 8, 2015 It's at one corner of the EL Loop where the the elevated line completely circles the part of Chicago, known for obvious reasons as 'The Loop'! I am not sure which corner but I have been over it twice(!) during an architectural tour of the loop by special train that circled the Loop twice. One circuit the guide was talking about features on the inside of the loop, the second circuit those on the outside. A brilliant trip, but don't think they do it now. It started and finished at Randolph Street and took about an hour. Then I have been over it, as I did a complete circuit of the loop (without the commentary) while I was there! I have some video of it somewhere. Link to post Share on other sites More sharing options...
jeff mcghie Posted February 9, 2015 Share Posted February 9, 2015 Following on from Andy R's suggestion, do post anything that is either an interesting or unusual formation both at home and abroad. Also anything interesting that someone has modelled. FB S & C 1 1.jpg Where is this one taken, it looks vaguely familiar? Link to post Share on other sites More sharing options...
RMweb Gold Re6/6 Posted February 10, 2015 Author RMweb Gold Share Posted February 10, 2015 Where is this one taken, it looks vaguely familiar? I'm afraid that I don't know Jeff. It is certainly in the UK, Link to post Share on other sites More sharing options...
dasatcopthorne Posted February 12, 2015 Share Posted February 12, 2015 This is only a single of course, but it must be a half inside, half outside slip. None of it straight either. Brian WLL Clapham Jct. Link to post Share on other sites More sharing options...
SM42 Posted February 12, 2015 Share Posted February 12, 2015 A full Grand Union is considered the tramway engineer's star turn, being a crossing of two routes with connections at every corner. They aren't common, but Prague has at least two, as well as several 3/4 Grand Unions, an example of which appears below - Poznan has a couple that I can think of too. One at the junction of Roosevelta and Swiety Marcin (which also happens to be a roundabout for road vehicles) and at the junction of Roosevelta and Most Teatralny. There is a 3/4 at Rondo Srodka (near the Malta Lake narrow gauge railway) which also happens to be across a roundabout (fun when the traffic lights change and the tram is hanging out halfway across the road whilst it waits for a signal at the other side of the roundabout) and there is an interesting double line / single line 3/4 at the junction of Gwarna and 27 Grudnia. Unfortunately I don't have photos of these but Google Maps shows them quite well. Back in Blighty, If I remember correctly, outside New St PSB there is a double slip with a switch diamond in the middle (for want of a better description) I may have a photo lurking somehwere. It was certainly fun to clip up if you had too. Even had its own special extra long (and heavy) point clip. Andy Link to post Share on other sites More sharing options...
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