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Scale Factors for Models
Following an exchange of emails with a rail fan friend of mine, we got to discussing scale factors for models with regard to time.
Apologies if this has been done to death before, but I can't find any previous posts so if there are any model makers on line, I need to confirm I've got the facts right.
To keep it simple, let's say a locomotive is 100 tonnes and we make a scale model at 1:100.
The weight of the model, if identical materials are used will be;
100 tonnes X 1/100, X 1/100 X1/100 = 0.1 kg
If the loco is 20 m long then the final length will be 20 X1/100 = 0.2 m long
If the full size locomotive travels at 60 mph it will complete 1 mile in 1 minute.
Therefore scale wise should the model speed be 60 X 1/100 mph = 0.6 mph?
So after 1 minute it will travel 0.01 miles which, if my arithmetic stacks up equates to 52.8 feet. Or speed of 52.8 feet per minute. (Sorry for mixing Imperial and Metric).
And now the 64,000 Dollar question, will artificial smoke from the model chimney follow the same rules and look correct if say the model is being filmed in real time?
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