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1. Slips
... /www.templot.com/martweb/gs_geometry.htm#peg_positions from which: peg on FP -- Sets the fixing peg at the Fine-Point of a V-crossing (the rail gauge-face intersection point). Repeatedly selecting peg on FP (CTRL-4) toggles the peg alignment between the main road and the turnout road. The fine-point is a little way in front of the actual nose of the vee, which is blunted off to a width of 3/4" (scale) on bullhead track. 2_160721_340000000.png red_pointer.gif Do not confuse this Fine-Point at the gauge-face intersection with the term "frog point". This means the location of the blunt nose of the vee and is also sometimes abbreviated to FP, for example in North America (where the nose is usually blunted to 1/2" width). peg on TCP -- Sets the fixing peg at the Turnout-side Crossing Point. This position is on the turnout road centre-line in line with the FP fine-point. For a ...
... The "1 /2 point of frog" is called the blunt nose. It is the width of the tip of the vee. In the UK it is not 1/2". For traditional UK bullhead track on non-GWR lines it is 3/4 ", which is the Templot default. This is the very first change you need to make, because it affects other things including the layout of the timbering: 2_071311_170000001.png The "theoretical point" is called the fine point (FP) or intersection: 2_160721_340000000.png The "point of switch" is called the toe. The lead lengths from the toe are shown in the information panel: 2_071311_170000000.png You need to scroll the information panel to see these. The dimensions are in model mm and will change as you adjust the turnout. You can't set them directly. Clearly the difference between these two leads, the distance from FP to blunt nose, called "One Half of Frog Number in Inches" on your drawing becomes "Three Quarters of Frog Number in Inches" when the blunt ...
... bullhead turnouts. Thanks Phil posted: 31 Jul 2014 12:00 from: Martin Wynne Phil O wrote: Would it be possible to add a line on the template to assist in locating the position of the blunt nose, preferably a different colour, as I am struggling with the assembly of some flat bottom railed turnouts. A first for me, up til now I have only built bullhead turnouts. Hi Phil, Templot already marks the blunt nose on the vee, and the Fine Point (FP) gauge intersection: 2_160721_340000000.png What additional line did you have in mind? For flat-bottom vees the blunt nose is 5/8" wide and overlaps the centre of the 'A' timber by 5". For a standard 12" wide timber this means that it is 1" scale from the edge of the timber. That's 0.33mm in 4mm/ft scale. You could use the edge of the timber as a guide for this. (In bullhead the blunt nose is 3/4" wide and overlaps the centre of the 'A ...
... , thus ensuring that the tread part of the wheel is always resting on the top surface part of the rail. It is unfortunate that the original designers of the EM wheel profile didn't allow for these factors by making the minimum wheel width 2.4mm. For more details of wheel settings and gaps for EM, see this page (scroll down): http://00-sf.org.uk and add 2mm to the relevant dimensions. But note that by default, Templot draws the templates with a proper full-width blunt nose: 2_160721_340000000.png This means that if you make a sharp vee, and align the rails correctly to such a template, the vee nose will be overhanging the "A" timber in fresh air between the timbers, aligned to the FP intersection mark. Which again looks awful. If you want to use sharper vees, you need to print new templates after adjusting the blunt nose width at real> V-crossing options> customize V-crossing> blunt nose... menu item -- click the? info button on the ...
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