New Helmet - RF1400

[36654]

Point is I don't know what is meant by the non-specific "comparable" with respect to weight comparison and if it is a couple of ounces I ain't bothered.

You piqued my interest in mentioning in the Stribeck curve and will admit I am not familiar with that, so I had to look it up:



I like the idea of MIPS (Multi-directional Impact Protection) systems in helmets but must admit I am struggling to see the analogy with that system and hydrodynamic lubrication.

See that minimum in the friction coefficient? If you're to the left of that minimum, there's a lot of stiction/vibration at low speed. In the case of the MIPS-like concepts, if you model the surface friction between the scalp and helmet interior at a high value, you'll get a lot of rotational load transfer from the helmet to the scalp/head. Thus, MIPS, a slip liner or other technology will appear to be beneficial.

But, is that realistic? Some of the recent SNELL tests indicate the potential benefits of MIPS and other technologies may be less than expected. Fitting either a wig to a headform or using a smooth metallic surface (low friction) headform will minimize the load transfer to the head. Similarly, using a high friction headform appears to accentuate the possible benefits of MIPS-type technologies.