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Is it true that Arai and Shoei make the interior shape of their crash helmets different for the Japanese market? Do you know what shape your head is? Do you live in Europe or North America and find it hard to buy a crash helmet if your head is round? Find out in this video.
Studies I reference and used in the making of this video can be found here:
Hohenstein Institude Head Shape Study
www.webbikewor...
The CAESAR project: a 3-D surface anthorpometry survey
www.semanticsc...
SizeChina: A 3D Anthropometric Survey of the Chinese Head
www.semanticsc...
A comparison between Chinese and Caucasian head shapes.
www.semanticsc...
Calculate eccentricity
www.fxsolver.c...
Search for eccentricity of an ellipse. Click the solve (add to solver) button. Put the largest measurement in a and the smallest in b. Measurements can be in any units and not even to scale, they just need to be relative to each other. Click solve.