helmet - Page 2

Hacksaw · 12-12-2016, 01:13 PM

Maybe a helmet dealer or tech guy can confirm this but it's my understanding that a M rating is constructed differently than a S rated one. The difference is a M hat is designed to protect a one hard hit, ie fly off your scooter and slam the pavement while the S hat can protect multiple hits ie slapping the inside of your roll cage when barrel rolling thru the lights.

jmcarter · 12-12-2016, 01:49 PM

Hacksaw, no helmet is built to take multiple hits. And no matter the construction five years is recommended as the replacement interval. The SA rating affords fire retardant materials and my experience is the nomex or similar interior fabric is softer...kinda like sleeping on high count sheets vs Walmart brand..to each his own.

Lenny5160 · 12-12-2016, 01:52 PM

I love my HJC CL-17 helmet. Very comfortable and very affordable. I wouldn't trade it straight-up for my brother's far more expensive Simpson Bandit.

Jeg's site still has them at Snell 2010, but Summit lists them as Snell 2015.

Hacksaw · 12-12-2016, 02:24 PM

Checked the Snell website. A rating of SA does have fire protection in the liner, a smaller opening and must pass a roll bar impact test.

Bobby DiDomenico · 12-12-2016, 03:10 PM

Quote:

Originally Posted by Hacksaw

Maybe a helmet dealer or tech guy can confirm this but it's my understanding that a M rating is constructed differently than a S rated one. The difference is a M hat is designed to protect a one hard hit, ie fly off your scooter and slam the pavement while the S hat can protect multiple hits ie slapping the inside of your roll cage when barrel rolling thru the lights.

That is my understanding, the M is not designed for repeated roll bar contacts.

Greenlight · 12-12-2016, 05:34 PM

M rated helmets have a larger peripheral vision.

http://www.smf.org/helmetfaq#aSAMKdiff

What are the differences between the SA, M and K standards?

The SA standard was designed for competitive auto racing while the M standard was for motorcycling and other motorsports. The K standard was released to accommodate helmets used in karting. There are three major differences between them:

The SA standard requires flammability test while the M and K standards do not.

The SA and K standards allow for a narrower visual field than the M standard (Some SA and K certified helmets may not be street legal).

The SA and K standards include a rollbar multi-impact test while the M standard does not.

jmcarter · 12-12-2016, 05:56 PM

Think you guys are misinterpreting the cert tests...just because a SA helmet is tested for impacts which you cannot measure doesn't mean it will be free of damage and able to sustain subsequent impacts. But everybody has to make the call to their satisfaction, just pointing out a SA helmet is an added safety measure but doesn't offer any guarantees.

Hacksaw · 12-12-2016, 08:26 PM

A helmet with SA rating must pass a roll bar impact test. Helmet with M rating does not need to meet this requirement. They may be made by the same company, same construction or MAYBE NOT. Why take the chance, unless your one of those racers that leaves first and spins his head around like Linda Blair at the 300' mark and having a larger view window is more important than your brain being scrambled. Also note that any impact, like dropping your helmet on the ground can damage the crushing properties of the inner liner. Manufacturers recommend you return it for checking/repair or replace it.

ron b · 12-12-2016, 08:31 PM

Quote:

Originally Posted by Sean Marconette

Why not buy american made and buy Impact, or RJS? See if any of the others state where they are made. That goes for Bell, Simpson, and GForce. Impact is made in Indy, and RJS is made in Michigan.

I have been trying to buy a impact 1320 large in white for 6 months, they keep pushing the build date ahead.

cmracing · 12-12-2016, 10:29 PM

Quote:

Originally Posted by Adger Smith

In an accident I had in 1999 I had a closed face with the big opening for my glasses. A piece of guard rail wooden post still got inside and damaged my face and eye. I won't even consider an open faced.

I never ran at a track that didn't have full metal guard rails at a minimum (US-13). All the tracks I run at have the Jersey Barriers. I'll stick with them. I'm not relying on my helmet to protect me from inferior race tracks, too many good ones around here to take a chance.

12-12-2016, 01:13 PM	#11
Hacksaw Senior Member Join Date: Sep 2016 Posts: 882 Likes: 206 Liked 310 Times in 174 Posts	Re: helmet Maybe a helmet dealer or tech guy can confirm this but it's my understanding that a M rating is constructed differently than a S rated one. The difference is a M hat is designed to protect a one hard hit, ie fly off your scooter and slam the pavement while the S hat can protect multiple hits ie slapping the inside of your roll cage when barrel rolling thru the lights.

12-12-2016, 01:49 PM	#12
jmcarter VIP Member Join Date: Dec 2008 Location: Richmond Hill GA (and Port Ludlow WA) Posts: 4,296 Likes: 2,383 Liked 3,181 Times in 972 Posts	Re: helmet Hacksaw, no helmet is built to take multiple hits. And no matter the construction five years is recommended as the replacement interval. The SA rating affords fire retardant materials and my experience is the nomex or similar interior fabric is softer...kinda like sleeping on high count sheets vs Walmart brand..to each his own. __________________ Jim Carter 2340 Super Stock 2340 SST/2340 Stock Set another place at the table

12-12-2016, 01:52 PM	#13
Lenny5160 Senior Member Join Date: Nov 2015 Location: Inver Grove Heights, MN Posts: 898 Likes: 604 Liked 431 Times in 224 Posts	Re: helmet I love my HJC CL-17 helmet. Very comfortable and very affordable. I wouldn't trade it straight-up for my brother's far more expensive Simpson Bandit. Jeg's site still has them at Snell 2010, but Summit lists them as Snell 2015. __________________ S/ST 51 S/C 53

12-12-2016, 02:24 PM	#14
Hacksaw Senior Member Join Date: Sep 2016 Posts: 882 Likes: 206 Liked 310 Times in 174 Posts	Re: helmet Checked the Snell website. A rating of SA does have fire protection in the liner, a smaller opening and must pass a roll bar impact test.

12-12-2016, 05:34 PM	#16
Greenlight Member Join Date: Dec 2004 Posts: 215 Likes: 16 Liked 79 Times in 22 Posts	Re: helmet M rated helmets have a larger peripheral vision. http://www.smf.org/helmetfaq#aSAMKdiff What are the differences between the SA, M and K standards? The SA standard was designed for competitive auto racing while the M standard was for motorcycling and other motorsports. The K standard was released to accommodate helmets used in karting. There are three major differences between them: The SA standard requires flammability test while the M and K standards do not. The SA and K standards allow for a narrower visual field than the M standard (Some SA and K certified helmets may not be street legal). The SA and K standards include a rollbar multi-impact test while the M standard does not.

12-12-2016, 05:56 PM	#17
jmcarter VIP Member Join Date: Dec 2008 Location: Richmond Hill GA (and Port Ludlow WA) Posts: 4,296 Likes: 2,383 Liked 3,181 Times in 972 Posts	Re: helmet Think you guys are misinterpreting the cert tests...just because a SA helmet is tested for impacts which you cannot measure doesn't mean it will be free of damage and able to sustain subsequent impacts. But everybody has to make the call to their satisfaction, just pointing out a SA helmet is an added safety measure but doesn't offer any guarantees. __________________ Jim Carter 2340 Super Stock 2340 SST/2340 Stock Set another place at the table

12-12-2016, 08:26 PM	#18
Hacksaw Senior Member Join Date: Sep 2016 Posts: 882 Likes: 206 Liked 310 Times in 174 Posts	Re: helmet A helmet with SA rating must pass a roll bar impact test. Helmet with M rating does not need to meet this requirement. They may be made by the same company, same construction or MAYBE NOT. Why take the chance, unless your one of those racers that leaves first and spins his head around like Linda Blair at the 300' mark and having a larger view window is more important than your brain being scrambled. Also note that any impact, like dropping your helmet on the ground can damage the crushing properties of the inner liner. Manufacturers recommend you return it for checking/repair or replace it.