Templot Club Archive 2007-2020
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posted: 17 Feb 2012 14:12 from: shawg
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is there any way to have point and splice rails at different lengths for example in a 1:7 crossing, point rail 13' 3" and splice rail 13' 9" |
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posted: 17 Feb 2012 15:14 from: Martin Wynne
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shawg wrote: is there any way to have point and splice rails at different lengths for example in a 1:7 crossing, point rail 13' 3" and splice rail 13' 9"Hi Geoff, Sorry, no. You can represent a custom rail joint on the template using a severely shoved bonus timber (reduce the width to zero). What is the prototype? In the vast majority of cases the splice rail length is set so that both legs of the vee are the same length. For example the usual dimensions of REA bullhead 1:7 crossings from the blunt nose are: Point and Splice assembled = 13'-10" Splice rail only = 13'-1.5" And for original inclined FB: Point and Splice assembled = 14'-0" Splice rail only = 13'-3" The couple of inches difference is accounted for by the changed blunt nose dimensioning, and the wider timber spacing at joints for FB. regards, Martin. |
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posted: 17 Feb 2012 15:34 from: shawg
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info is taken from NERA's L.N.E.R standard permanent way 95r B.S Rail drawing No:100A . i cant make out if these measurements are individual rails or combined from blunt nose | ||
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posted: 17 Feb 2012 15:54 from: Martin Wynne
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shawg wrote: info is taken from NERA's L.N.E.R standard permanent way 95r B.S Rail drawing No:100A . i cant make out if these measurements are individual rails or combined from blunt noseHi Geoff, Those drawings are the original REA bullhead designs. Point & Splice assembled from blunt nose 13'-9" Actual Splice rail 13'-3" The 13'-9" is made up as -- 4" to centre of "A" timber, 5 timber spaces of 30", 11" to rail joint. 12" (or 12.5") is more usual to the joint, hence the 13'-10" Point & Splice which I quoted earlier. regards, Martin. |
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posted: 17 Feb 2012 16:30 from: shawg
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thanks for clearing that up regards geoff |
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