John-357061 Posted July 19 Share Posted July 19 Looking for suggestions for platform distance from a straight track and a 4th curve? Also height. Overhang. I can run various trains and measure. Before designing and laser cutting. Link to comment Share on other sites More sharing options...
What About The Bee Posted July 20 Share Posted July 20 (edited) For the answer in real life: https://www.devboats.co.uk/gwdrawings/loadinggauges.php Its a good read and intro to the topic. When you get to the table detailing Principal Dimensions, the platform dimension given is from the outside of the rail to the platform edge. Example. GWR, 1920s. Dimension is 2'3", from outside edge of rail to platform edge. 27"/120 ×25.4 = 5.715 mm There is also a fantastic structure gauge diagram here https://85a.uk/templot/archive/topics/gallery/2/original/2_040252_350000001.gif Which suggests your platform height, in real life, should be 3 feet above rail 7.62 mm in TT120 Bee For a real life station on a curve, examine https://youtu.be/VHPn6zWIcrY?si=BfUVjtrfQk4Nd7y- Edited July 20 by What About The Bee Spell words correctly! Link to comment Share on other sites More sharing options...
StuLarge Posted July 20 Share Posted July 20 Best bet for your curve is get the locomotive or piece of rolling stock with the longest wheelbase and overhang (probably MK3 coach), strap a pencil to he middle of the inside and a corner for the outside and push it round to mark the radius 2 Link to comment Share on other sites More sharing options...
Silver Fox 17 Posted July 20 Share Posted July 20 Platform heights varied considerably in the past with no specific height. Generally they were about buffer centre line but could be a little higher or a lot lower. Clearance from the track cannot ever be prototypical due to our models being wider over valve gear, and more so over the 08. As for curves passengers would need to Olympic long jumpers unless you have something around 15 foot radius or more. 1 Link to comment Share on other sites More sharing options...
Silver Fox 17 Posted July 20 Share Posted July 20 Here is Clun Castle at Newcastle showing why WR were prohibited up North, and, why other locos like Gresley A1/3' etc had the corners scalloped. 1 Link to comment Share on other sites More sharing options...
96RAF Posted July 20 Share Posted July 20 It is called end throw where the front or back of a vehicle overhangs out of a curve and centre throw where the centre of a vehicle hangs into a curve. Using the pencil trick ensures you have minimum clearances even though they will look unrealistic. Designing a commercial product relies upon use of worst case scenario throws making the gaps bigger than may be necessary on your own layout. 1 Link to comment Share on other sites More sharing options...
ateshci Posted July 20 Share Posted July 20 As a starting point, you may want to refer to this Link to comment Share on other sites More sharing options...
atom3624 Posted July 20 Share Posted July 20 Don't forget any slack / movement of the axle / wheelset in the mounting point / chassis. Al. Link to comment Share on other sites More sharing options...
Rallymatt Posted July 20 Share Posted July 20 If there is any chance of you running a piece of Continental rolling stock not seen on the UK network, you will need a bigger gap to platforms too. Consider if you have run around points in a platform area the end throw becomes quite relevant. Class 50 has a big end throw even though MK3 coaches will form the biggest overhang on inside of corners. 1 Link to comment Share on other sites More sharing options...
John-357061 Posted July 20 Author Share Posted July 20 Thanks for all your replies. A lot of great information. 1 Link to comment Share on other sites More sharing options...
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