This site will look much better in a browser that supports web standards, but it is accessible to any browser or Internet device.


Clubs, glossaries, museums, shops and much more......

glue-it.com

...all of your model making needs from one site.







by Charles Darley

Chart for assessing Speed of Model

Actual / Scale of The Model of Scot Ranger.


Ship's actual speed

Ballasted 11.5 knots, Loaded 10.5 knots Scale 1: 32

The table given below was calculated on a spread sheet so that easy reference could be made to the time over a measured 100ft.

Scale speed is considered to be equal to the actual speed divided by the square root of the scale.

Having found that the model performed to the correct calculated speed consideration was given to the size of the bow wave which if it looks life like is another good indication that the model is moving at a realistic speed.

Time in seconds over a measured distance of 100ft

Actual Actual Scale Scale
Time Speed Speed Speed Speed
in secs in MPH in Knots in MPH in Knots
35.00 1.95 1.69 11.02 9.58
34.75 1.96 1.71 11.10 9.65
34.50 1.98 1.72 11.18 9.72
34.25 1.99 1.73 11.26 9.76
34.00 2.01 1.74 11.34 9.86
33.75 2.02 1.76 11.43 9.93
33.50 2.04 1.77 11.51 10.01
33.25 2.05 1.78 11.60 10.08
33.00 2.07 1.80 11.69 10.16
32.75 2.08 1.18 11.78 10.23
32.50 2.10 1.82 11.87 10.31
32.25 2.11 1.84 11.96 10.39
32.00 2.13 1.85 12.05 10.47
31.88 2.14 1.86 12.10 10.50
31.75 2.15 1.87 12.15 10.56
31.50 2.16 1.88 12.24 10.64
31.25 2.18 1.90 12.34 10.73
31.00 2.20 1.19 12.44 10.81
30.75 2.22 1.93 12.54 10.90
30.50 2.24 1.94 12.65 10.99
30.25 2.25 1.96 12.75 11.08
30.00 2.27 1.98 12.86 11.17
29.75 2.29 1.99 12.96 11.27
29.50 2.31 2.01 13.07 11.36
29.25 2.33 2.03 13.19 11.46
29.11 2.34 2.04 13.25 11.50
29.00 2.35 2.04 13.30 11.56
28.75 2.37 2.06 13.42 11.66
28.50 2.39 2.08 13.53 11.76
28.25 2.41 2.10 13.65 11.86
28.00 2.44 2.12 13.77 11.97
27.75 2.46 2.14 13.90 12.08
27.50 2.48 2.15 14.03 12.19
27.25 2.50 2.17 14.15 12.30
27.00 2.53 2.19 14.28 12.41
26.75 2.55 2.21 14.42 12.53
26.50 2.57 2.24 14.55 12.65
26.25 2.60 2.26 14.69 12.77
26.00 2.62 2.28 14.83 12.89
25.75 2.65 2.30 14.98 13.02
25.50 2.67 2.32 15.13 13.14
25.25 2.70 2.35 15.28 13.27
25.00 2.73 2.37 15.43 13.41
24.75 2.75 2.39 15.58 13.54
24.50 2.78 2.42 15.74 13.68
24.25 2.81 2.44 15.90 13.82
24.00 2.84 2.47 16.07 13.97

<-- Previous Page      Menu      Next Page -->