First you need to know the "scale" size, example 1/4, 1/5, 1/8, 1/10, 1/12 etc.
For example a 1/4 scale car going 25mph in real life is going 100 scale mph.
So 225 mph scale speed if it were a 1/10 model you would divide by 10 and get 22.5 real mph. If you know the true speed and scale you multiply by that number. Example 1/10 scale going 22.5 real mph x 10 = 225 mph scale speed.
8.71 mph
top speed is 225 mph
The actual speed is 71.875 mph. The increase in speed shown at 60 mph is 2.5 mph. Therfore for 75 mph the increase is 3.125 mph. So by decreasing this value from 75 we get 71.875.
202.5 mph
Top Speed: 140 mph, 225 km/h (155 mph, 249 km/h supercharged)
The Beaufort scale.
A hair over 78 mph (78.125).
225 km/h, 140 mph.
225 km/h, 140 mph.
The estimated wind speed for each category on the Fujita (F) scale is listed below along with the more accurate wind speed range of its Enhanced Fujita (EF) scale equivalent*. F0: 40-72 mph (EF0 65-85 mph) F1: 73-112 mph (EF1 86-110 mph) F2: 113-157 mph (EF2 111-135 mph) F3: 158-206 mph (EF3 136-165 mph) F4: 207-260 mph (EF4 166-200 mph) F5: 261-318 mph (EF5 over 200 mph) *the actual determining factor for a rating is damage, which is used to estimate wind speed. In recent years it was found that the wind speed estimates for the damage levels on the original F scale were wrong, ans so were update on the EF scale in 2007.
46 mph
50 mph scale speed. So, at 1:10 of normal car=5 mph net.