OPTIMUM SPEED SCALE CHART FOR FUDGE Scale Miles/Hour Km/Hour -6 4 6 -5 5 8 -4 6 10 -3 7 11 -2 8 13 -1 10 16 0 12 19 +1 14 23 +2 17 27 +3 20 32 +4 24 39 +5 30 48 +6 36 58 +7 43 69 +8 52 84 +9 62 100 +10 74 119 +11 89 143 +12 107 172 +13 128 206 +14 154 248 +15 185 296 +16 222 357 +17 266 428 +18 319 513 +19 383 616 +20 460 740 +21 552 888 +22 662 1065 +23 795 1279 +24 954 1535 +25 1145 1843 +26 1374 2211 +27 1648 2652 +28 1978 3183 +29 2374 3820 +30 2849 4585 +31 3418 5501 +32 4102 6601 +33 4922 7929 +34 5906 9505 +35 7088 11407 +36 8506 13689 Posted by Gordon A. Cooper in 2007. http://www.fudgery.net http://www.fudgery.net/parallel/FILES