Hedkayse One Helmet vs EPS Helmet

by Iain O'Brien September 03, 2018



This is an intense example of us getting our message across. We wanted to create the worlds toughest and safest helmet; to show this we have taken demonstrating it to the extreme.


While this is not a real test, we wanted to use something visual where we could all understand the forces involved.




As we said, we wanted to create the toughest and safest helmet - because we like you and your safety and protection is important to us.



Some background information on Testing Standards and what the Picoscope (the G-force reading meter) reading means:


EN 1078 (or CE 1078 - same thing) is the European safety standard for a cycle/skate/scooter/roller skate helmet.


We carried out the Flat Anvil test (ambient) to put a value on how much punishment our Hedkayse One could handle (we knew it'd be able to take the punishment, but WE really wanted a number, a stat - everyone loves a stat - so that we could relate it to how other helmets perform on the same Test - having not been rolled over by a 4x4).


Average impacts to the crown of the helmet on a brand new straight out of the packaging lid are 116-124 G's (flat anvil/ambient/crown). (cited here)

For comparison, a fresh unabused, Hedkayse One registers 120 G's on its first impact (flat anvil/ambient/crown).


Having given both helmets (the EPS and Hedkayse One) the 4x4 treatment, the Hedkayse One then tested 148.7 G's.  In our eyes this is amazing.  A genuine game-changer in the helmet market.  We didn't even attempt to test the EPS one as that would end up damaging the testing rig and equipment.

Obviously, we don't recommend you doing this at home, but for all the bumps, knocks, and bashes our helmets receive over their lifetime (before we replace them), it shows that the Hedkayse One will 'outlast' whatever you can throw at it, or roll over it.


By the way, the Hedkayse One still passes the European standard (registers below 250 g's) on its 70th impact.




More here:  

Impact testing must be carried out on a drop rig using instrumented head-forms incorporating tri-axial accelerometers. Both a flat anvil and a kerbstone anvil are used. The drop height for the head-form with the flat anvil is nominally 1,500mm, which is theoretically what is needed to achieve an impact velocity of 5.42m/s. With the kerbstone anvil, the head-form drop height is a nominal 1,064mm, which is required for an impact velocity of 4.57m/s. In each impact, the resultant deceleration of the head-form must not exceed 250g (where g = 9.81m/s2).

Iain O'Brien
Iain O'Brien


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