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In these drawings: rails are "thick" (8mm) whereas reality is 2.4mm, but thicker looks more appealing.Item radius diametercenterline 320 640sleepers-inner 320-8*4=288 576sleepers-outer 320+8*4=352 704innerrail-inner 288+8=296 592innerrail-outer 288+16=304 608outerrail-inner 288+48=336 672outerrail-outer 288+56=344 688Thin: more like real, but looks skinny:centerline 320 640sleepers-inner 320-8*4=288 576sleepers-outer 320+8*4=352 704innerrail-inner 288+8+2=298 596innerrail-outer 288+16-2=302 604outerrail-inner 288+48+2=338 676outerrail-outer 288+56-2=342 684
Straights and crossing
eighth circles
quarter circles
sixteenth circles
Switches right
Switches left
Scale 10%
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By replacing the two rounded rails with thesingle straight one, connection point D movesback to connection point B. The angles arecorrect, but point B should ideally be at thesame height as D and just 128mm to its left.However:AB = 128mm OA = 320mm a = 22.50 /2 = 11.25 AC = 2 OA sina = 124.858mmAD = 2 ACCF = AC sina = 24.359mmDG = 2 CF = 48.717mmBE = AB sin2a = 48.983mmBE-DG = 0.266mmB is 0.266mm too high upAF = AC cosa = 122.459mmAG = 2 AF = 244.918mmAE = AB cos2a = 118.257mmEG = AG-AE = 126.661mm which is too short.AG-AE-128mm = -1.339mmB is 1.339mm too far right
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