Quote:
Originally Posted by Jonny_H
<grin> Who said anything about speed? I just said "it would look like full size"...
The problem is acceleration. Basically a 1/10th car still accelerates (in any direction) at about 1g - but the size is scaled, so if it falls (after jumping) at 10 m/s^2, it looks like 100 m/s^2 or 10g, because it's ten times as many car lengths per second.
Similarly for cornering, assuming the tyres produce about 1.0 coefficient of friction.
Slow it down by the square root of the scale, and the acceleration (jumping/falling and cornering) should make it look like it's full size.
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So a 1/10th scale car when compared to 1/1 car doing the same speed travels its own length 10 times as fast.
So when using the time a car takes to travel its own length as a cue for speed, a 1/10th car at 30mph looks like a 1/1 car at 300mph.
So if you want a video of a 1/10th car to look like a video of a 1/1 car, the speed and acceleration looks 10 times faster, why not slow the video down by 10? Why would you slow it down by the root of 10?