Comparatif casques aéro
Publié : 30 juil. 2008, 13:54
Vu sur http://biketechreview.com/forum/viewtop ... f=1&t=2295 :
A further WT test concerning several aero helmet versus a regular helmet Crazy Creek. From Triathlon Mag's Triathlon Training Issue # 10 Aug / Sept 2008.
The procedure: A dummy as in the earlier test.
Cat Cheetah bike (monocoque), tri-bar riding position, just helmets changed. Wheels not turning (supposed minimal influence on head level turbulence?). Wind speed 40 kmh.
Tested in 3 positions: 1. Helmet flush to back 2. Tip pointing up 3. Helmet sideways.
The Helmets
Alpina Venga
Bell Meteor II
Giro Advantage
Ironman Helmets Stealth
LAS Cronometro
Lazer Bullet
Louis Garneau Rocket Air
Spiuk Kronos
Uvex FP-2
Helmet flush to back:
Uvex 173.14
Alpina 173.47
Bell 174.11
Giro 174.68
Spiuk 176.17
LG 176.89
Lazer 177.82
Stealth 178.14
LAS 178.83
Tip pointing up:
LG 187.41
LAS 188.09
Giro 188.78
Stealth 188.95
Lazer 188.98
Uvex 189.54
Bell 189.79
Alpina 190.31
Spiuk 191.40
Sideways:
Giro 189.99
Lazer 190.27
Alpina 190.59
Uvex 190.75
Spiuk 191.26
Bell 191.44
LG 191.60
Stealth 191.80
LAS 193.26
So, LG would be the best helmet for a "tip constantly up" rider, and LAS the worst for a "paranoid where's my minute man" type of TTer
They also tested ventilation: First heating the dummy's head to 60° centigrade, then after 3 minutes in the 40 kmh wind measured the temp again.
Results (temp after 3 mins)
Stealth 36.4
Spiuk 36.6
Lazer 37.3
LG 39.1
Giro 40.8
Bell 41.2
Alpina 42.4
Uvex 42.6
LAS 43.2
The value for the standard Crazy Creek road helmet was 183.38 W
Je pense que pour le prix, le Giro s'en sort bien... quelle analyse avez vous de ces résultats ?
A further WT test concerning several aero helmet versus a regular helmet Crazy Creek. From Triathlon Mag's Triathlon Training Issue # 10 Aug / Sept 2008.
The procedure: A dummy as in the earlier test.
Cat Cheetah bike (monocoque), tri-bar riding position, just helmets changed. Wheels not turning (supposed minimal influence on head level turbulence?). Wind speed 40 kmh.
Tested in 3 positions: 1. Helmet flush to back 2. Tip pointing up 3. Helmet sideways.
The Helmets
Alpina Venga
Bell Meteor II
Giro Advantage
Ironman Helmets Stealth
LAS Cronometro
Lazer Bullet
Louis Garneau Rocket Air
Spiuk Kronos
Uvex FP-2
Helmet flush to back:
Uvex 173.14
Alpina 173.47
Bell 174.11
Giro 174.68
Spiuk 176.17
LG 176.89
Lazer 177.82
Stealth 178.14
LAS 178.83
Tip pointing up:
LG 187.41
LAS 188.09
Giro 188.78
Stealth 188.95
Lazer 188.98
Uvex 189.54
Bell 189.79
Alpina 190.31
Spiuk 191.40
Sideways:
Giro 189.99
Lazer 190.27
Alpina 190.59
Uvex 190.75
Spiuk 191.26
Bell 191.44
LG 191.60
Stealth 191.80
LAS 193.26
So, LG would be the best helmet for a "tip constantly up" rider, and LAS the worst for a "paranoid where's my minute man" type of TTer
They also tested ventilation: First heating the dummy's head to 60° centigrade, then after 3 minutes in the 40 kmh wind measured the temp again.
Results (temp after 3 mins)
Stealth 36.4
Spiuk 36.6
Lazer 37.3
LG 39.1
Giro 40.8
Bell 41.2
Alpina 42.4
Uvex 42.6
LAS 43.2
The value for the standard Crazy Creek road helmet was 183.38 W
Je pense que pour le prix, le Giro s'en sort bien... quelle analyse avez vous de ces résultats ?