Nick73 Posted February 16, 2020 Share Posted February 16, 2020 Does anyone know where i can get a curved bridge or grider style bridge that will take 3rd radius track and at least 20cm long I've tried internet but not much luck must doesn't say what radius they are Nick Link to comment Share on other sites More sharing options...
walkingthedog Posted February 16, 2020 Share Posted February 16, 2020 Sounds like something to scratch build. Needs to be extra wide to account for the loco overhang. Link to comment Share on other sites More sharing options...
Nick73 Posted February 16, 2020 Author Share Posted February 16, 2020 /media/tinymce_upload/d287d17c6d3915111cc4618a230e943e.jpgFound this but what is 360mm radius in hornby radius does anyone know Link to comment Share on other sites More sharing options...
96RAF Posted February 16, 2020 Share Posted February 16, 2020 I just googled curved bridge 00 gauge and got plenty of hits and images including this link to an old forum discussion...https://www.modelrailforum.com/forums/index.php?showtopic=21432 The forum discussion notes that most curved bridges are actually straight sections joined together. True curved bridges are likely to be viaducts. Link to comment Share on other sites More sharing options...
Nick73 Posted February 16, 2020 Author Share Posted February 16, 2020 I've found what I'm after just waiting for the image to be approved its a nock 21350 says its a 360mm radius but that doesn't mean anything to me Link to comment Share on other sites More sharing options...
Chrissaf Posted February 16, 2020 Share Posted February 16, 2020 Noch not Nock........says its a 360mm radius but that doesn't mean anything to me.You said you wanted Radius 3. The 360mm radius of the Noch is actually an even tighter curve than Hornby Radius 1 at 371mm..Radius 3 is 505mm. All the Hornby track radius values are detailed on this Hornby website page..I find it hard to believe that you do not understand what a Radius XXmm value is..It is the radius of a circle & twice the radius is the diameter of a circle. For track, the radius is measured to the centre of the track from a virtual position that represents the very centre of the circle. If you draw an arc from the centre point at a distance equal to the radius, then the arc is the resultant tightness of the curve you get../media/tinymce_upload/3d535c3bb2fbf877d064e20aeade5783.jpg.Read this previously posted thread that gives details on a larger radius version of this product, but still not equal to Radius 3..Scratch building your own out of Plasticard and Plastruct modelling parts would be my preference. I have built a few scenic items using Plastruct and it has been a very successful and enjoyable exercise to admire ones own creation results. Link to comment Share on other sites More sharing options...
Nick73 Posted February 16, 2020 Author Share Posted February 16, 2020 I was never very good at maths thank you for your help back to the drawing board quess I'm gonna have to make something up Link to comment Share on other sites More sharing options...
LCDR Posted February 16, 2020 Share Posted February 16, 2020 The trackside wall set R660 can be used to create a curved bridge with a bit of ingenuity. https://www.hornby.com/uk-en/trackside-wall-set.htmlhttps://www.hornby.com/uk-en/trackside-wall-set.html And here are some alternatives. https://www.modelrailforum.com/forums/index.php?showtopic=13820 Wills also do bridge kits which could be modified to curve by applying a number of short straight units end to end. Link to comment Share on other sites More sharing options...
Puffed Out Posted February 16, 2020 Share Posted February 16, 2020 There are plenty of images on google images of real bridges. There is a homemade model......... looks a relatively easy construction.Take your pick, and make one. 😆 Link to comment Share on other sites More sharing options...
Chrissaf Posted February 17, 2020 Share Posted February 17, 2020 ...but what is 360mm radius in Hornby Radius terms....does anyone know..Due to the image posting delay, the question was answered before it was asked. See my post timed at 10:55 above. 360mm is less than Hornby Radius 1 @ 371mm. Link to comment Share on other sites More sharing options...
96RAF Posted February 17, 2020 Share Posted February 17, 2020 As an aside to this question I have just laid track for my curved bridge area and once I had the track bed shape defined by the track geometry for the route the necessary style and design of the bridge to carry it seems to be sorting itself out. Link to comment Share on other sites More sharing options...
mjb1961 Posted February 17, 2020 Share Posted February 17, 2020 /media/tinymce_upload/d287d17c6d3915111cc4618a230e943e.jpgFound this but what is 360mm radius in hornby radius does anyone knowHi Nick ,,,if this is the sort of thing you want you could very easily scratchbuild something like that,,look on eBay for oo gauge bridges,or girder bridges ,,then use your track as a guide and cut the required size out of some ply ,maybe 5mm / 10mm thick and remembering to make it wider at ends to allow for loco overhang ( as pointed out by WTD ),then fix the bridge sides to that with glue ,,also if you want stone or concrete type of pillars to bear the weight if it's a long structure you can also source them on eBay ,,,hope this all makes sense and is some help to you ,infact I have built something similar,i bought some old girder bridges ,I removed the sides from the base and cut some ply and created a twin track X 2 ft girder bridge,I'm actually going to extend it to almost 3ft ,,,go on and give it ago ,,,mjb Link to comment Share on other sites More sharing options...
LCDR Posted February 17, 2020 Share Posted February 17, 2020 In 'Old Money'; 360mm radius is 14.17 inches. now vintage Triang small radius was 13.5 inch radius or 343mm. Old Triang locomotives went round these curves OK although they did have much coarser flanges and flangeless centre drivers so you may 'get away with' 360mm radius IF your locomotives are all short wheelbase. However I would not recommend large locomotives like Hornby's Mallard, Flying Scotsman or Duchess of Athol and modern bogie carriages are put round curves as tight as that. However if all you run are the small 0-4-0 tank engines and four wheel wagons or coaches then you may be OK. Link to comment Share on other sites More sharing options...
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