Optimus Prime said:Not only does it offer some of the best crash protection ever
The Roadstergal said:It does fog up more easily than any other helmet I've owned, though. I fog-treated the back of the visor, and it's still pretty bad.
The Roadstergal said:Why, have you tested it? :eeps:
It is Snell M2000 rated, and while I know not all Snells are created equal, I don't know of a stricter standardized test for helmets.
Most helmets that are snell certified just barely pass. I read (but can't find now) data that indicated the Shoei RF-1000 and Arai (something or other) were both 40% better than Snell required. :thumbup:Unfortunately, it's not the fall that does the damage, it's the sudden stop. Both Snell and DOT measure the suddenness of the stop with an accelerometer fixed inside the headform. When the helmet smacks into the anvil, the accelerometer measures the headform deceleration throughout the duration of the impact event. This acceleration pulse is generally plotted as G's versus milliseconds. The testers analyze the acceleration pulse to determine whether the helmet passed or failed the test. Snell and DOT use different methods to analyze the results.
Snell limits the peak value to no more than 300 G's. Dr. George Snively, one of Snell's founders, had determined on the basis of his own research that young adult men could survive head crash impact accelerations at levels between 400 to 600 G's. He selected test criteria on the order of 300 G's for the Snell standards as acceleration levels that would be safe for almost all healthy people.
The DOT Standard requires that the peak acceleration not exceed 400 G's but they also put duration limits on the acceleration pulse. The period of time for which the pulse exceeds 200 G's must not be longer than 2 milliseconds. The period of time for which the pulse exceeds 150 G's must not be longer than 4 milliseconds. Duration criteria was taken from the 1971 ANSI Z90.1 standard. This criteria was dropped by ANSI in 1973 prior to the DOT standard going into effect.
Did you get the breath guard? Mine came with the breath and chin guard. The Breath guard does a great job keep the visor fog free. If you don't have it, go to your dealer and see if they have them. Mine were included for free, but sometimes dealers like to charge extra for them.The Roadstergal said:It does fog up more easily than any other helmet I've owned, though. I fog-treated the back of the visor, and it's still pretty bad. If I had to replace it today, I'd try an Icon Mainframe.
LmtdSlip said:Iam not a big fan of the ICON line. There whole business is based on style rather than substance.
I've heard of that stuff... I did the home liquid soap treatment.Mike 325xi said:Try this stuff...it is the only anti-fog treatment that has worked well for me despite the strange name.
http://www.catcrap.com/
I'd be interested in seeing that data. I didn't know Snell released it.Optimus Prime said:Most helmets that are snell certified just barely pass. I read (but can't find now) data that indicated the Shoei RF-1000 and Arai (something or other) were both 40% better than Snell required. :thumbup:
It's one of the few things I got online.Optimus Prime said:he breath and chin guard. The Breath guard does a great job keep the visor fog free. If you don't have it, go to your dealer and see if they have them. Mine were included for free, but sometimes dealers like to charge extra for them.
Optimus Prime said:Did you get the breath guard? Mine came with the breath and chin guard. The Breath guard does a great job keep the visor fog free. If you don't have it, go to your dealer and see if they have them. Mine were included for free, but sometimes dealers like to charge extra for them.
The Roadstergal said:I'd be interested in seeing that data. I didn't know Snell released it.
I got mine online for a great deal. I didn't expect the breath or chin guard, but they were in the box with everything else. I'd really look into it if the visor fogging is bothering you that badly. You should be able to get it for less than $20 and it works very well, IMHO.The Roadstergal said:It's one of the few things I got online.I usually get my stuff from Seattle Cycle, though - the dealers here have just ridiculous prices on gear.