Giro Aerohead Redefined and Ahead of the Game with MIPS

Australian National Time Trial Champion Rohan Dennis in tne Giro Aerohead Ultimate MIPS.

Helmet manufacturer Giro have redefined their time trial lids with the introduction of the Aerohead MIPS range that Giro have claimed to be their fastest time trial helmet ever.

Rohan Dennis wore the Aerohead Ultimate MIPS when he rode to victory on the 2015 Tour de France ITT Prologue and set the fastest average speed ever recorded at any Tour de France.

The Aerohead Ultimate MIPS and the Aerohead MIPS share the same unconventional profile but differ in construction and function slightly.

Both helmets feature the Multi-Directional Impact Protection System (MIPS) and a Zeiss Optics wrap-around eyeshield that offers increased field of vision and magnetically attaches to the helmet.

What differenciates the two models is the TeXtreme carbon fiber shell of the Aerohead Ultimate MIPS that creates a stiffer carcass and reduces the frontal area of the helmet whilst the Aerohead MIPS features four vents and internal channelling to promote a cooling effect for time trialists and triathletes and is made of a polycarbonate material.

The two helmets have a Roc-Loc Air Fit retention system and Hydrophilic anti-bacterial brow padding. Both the Aerohead Ultimate MIPS and Aerohead MIPS weigh in at 450 grams.

Giro has simulated a number of real-world scenarios to test the power-saving capabilities in the wind tunnel and at the ADT Home Depot Velodrome. Two head angles of 30 and 60 degrees to mimick a riders head in a forward-facing position and a downward facing position were tested along with five yaw angles of head wind to create an average weighted drag.

*Data collected from The University of Washington's Aeronautical Laboratory (UWAL) Wind Tunnel. Giro's data represents two head angles (30o & 60o) and five yaw angles (0o, 5o, 10o, 15o, 20o). The Wind Average Drag (WAD) calculation uses the Yaw data to calculate one weighted average drag number. Giro then uses the two head angles to calculate a weighted average of a cyclist riding 80% in head up (30o position) and 20% in head down (60o) postion. Time difference can then be calculated for various distances and power outputs. — *Data collected from The University of Washington’s Aeronautical Laboratory (UWAL) Wind Tunnel. Giro’s data represents two head angles (30o & 60o) and five yaw angles (0o, 5o, 10o, 15o, 20o). The Wind Average Drag (WAD) calculation uses the Yaw data to calculate one weighted average drag number. Giro then uses the two head angles to calculate a weighted average of a cyclist riding 80% in head up (30o position) and 20% in head down (60o) postion. Time difference can then be calculated for various distances and power outputs.

**Track data collected at the ADT Home Depot Velodrome using ERO's equipment and data acquisition system. Data represents averages of two riders (Giro Sponsored Pro Tour rider and a non Giro Sponsored Pro/Elite Triathlete) ***Data taken with Giro's Therminator heated head form. Data collected after 30 minutes operating in our wind tunnel at 22mph with 69oF ambient air. — **Track data collected at the ADT Home Depot Velodrome using ERO’s equipment and data acquisition system. Data represents averages of two riders (Giro Sponsored Pro Tour rider and a non Giro Sponsored Pro/Elite Triathlete) ***Data taken with Giro’s Therminator heated head form. Data collected after 30 minutes operating in our wind tunnel at 22mph with 69oF ambient air.

Australian’s will have to wait until October to get their hands on a Giro Aerohead Ultimate MIPS and Aerohead MIPS with no AUD pricing or release date confirmed just yet. Keep an eye out for more information at the Giro website.

https://www.youtube.com/watch?v=0VlKJvqoo3I