I have started making a single slip. My initial step was to "make irregular diamond at intersection". The setup is a main road of 6000mm radius with an adjacent loop road on a radius 6044.67. The ladder turnout was a 1:8 with a resultant turnout radius of 4286.96. The slip will go from the loop road (6044.67 radius) to the branch. This resulted in a one V of 4.37 and the other of 6.86 I thought these were relatively generous curves. However, in another topic Martin  mentioned that a V of 1:5 was  much to small for a slip road. What is considered to be the smallest V that I could use? I could make the branch curve bigger but then there wouldn't be a the same curvature through the ladder and turnout. I would also be interested to know how close the V should be to a whole number or half of one e.g. 1:6, 1:6.5, 1:7 and so on.Thanks for any advice

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message ref: 31637

Hi Graham,

Those crossing angles are too short for an inside slip, other than perhaps in industrial sidings. At those angles it would be more usual to have an outside slip or a half-scissors.

Please if possible post your .box file with questions, otherwise I have to guess what it is exactly that you are trying to do. I think you are making a single line branch junction curving away from the outside of curved double track.

In such locations a half-scissors is the most likely, rather than a slip. Something like this perhaps:




Or maybe something more spacious and easier to build:



If you post your .box file I can be more specific in replying.

cheers,

Martin.

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message ref: 31638

Graham Long wrote: I have started making a single slip. My initial step was to "make irregular diamond at intersection". The setup is a main road of 6000mm radius with an adjacent loop road on a radius 6044.67. The ladder turnout was a 1:8 with a resultant turnout radius of 4286.96. The slip will go from the loop road (6044.67 radius) to the branch. This resulted in a one V of 4.37 and the other of 6.86 I thought these were relatively generous curves. However, in another topic Martin  mentioned that a V of 1:5 was  much to small for a slip road. What is considered to be the smallest V that I could use? I could make the branch curve bigger but then there wouldn't be a the same curvature through the ladder and turnout. I would also be interested to know how close the V should be to a whole number or half of one e.g. 1:6, 1:6.5, 1:7 and so on.Thanks for any advice
Hi Martin 
I think I have attached my latest plan. Could you let me know if it makes sense. After your previous reply I think I will stay with a regular slip. The ourside slip looks a bit complicated.

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message ref: 31657