You only got One Noggin **When & why you should replace your Helmet ** - Page 3 : Honda CBR 600RR Sportbike Forum : 600RR.Net

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Old 11-19-2012, 04:15 PM   #61
Tigerbee
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um.... I can't find any stickers on my Shoei XR-900. There's a warning sticker on the inside, that's about it. I bought it from someone in England which probably explains that.
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Old 11-23-2012, 06:33 PM   #62
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nice write up. helmet is most important to me ,
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Old 01-05-2013, 09:46 PM   #63
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Chemical Decomposition of Helmets

Motorcycle helmets are generally composed of a kevlar, fiberglass or carbon fiber shell and an expanded polystyrene (EPS) foam. Provided it is not exposed to excessive salts (think salt water) or carbon (don't roll around in carbon rich soil or bathe in milk?), the shell is pretty slow to lose structural integrity. However, the EPS will start to break down almost immediately.

Most people know that polystyrene (styrofoam coffee cups, etc.) takes a really long time to fully decompose in a landfill--it takes approximately 10 million years to fully decompose. However, it would only take 100 years for your motorcycle helmet to become a pile of styrofoam grains--sand. So, over a period of 10 years, that helmet is already 10% dust. Not something with good structural integrity much less something you really want to trust with your brain.

When originally determining acceptable helmet parameters, the helmet should meet the standard DOT requirements or whatever similar certification. However, many of these standards do NOT provide standards for old or used helmets. The failure rate for a helmet that is not OVER-engineered will increase as the foam decomposes.

Wearing an old helmet is like using old tires on your car. It is up to you to decide if you want to take the chance. But I can guarantee you that some people who know more about the failure rates than anyone here decided that 7 years is long enough, and I would be willing to bet that that is even longer than is a good idea. They don't want to throw out old stock any more than you want to buy a new one, and at a small failure level they are just fine with paying the settlements rather than throwing them out. YOU, however, only get one head.
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Old 06-26-2013, 01:50 PM   #64
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^Good point! mine is 2010, first use 2013, so I have a while to go!
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Old 06-30-2013, 04:01 AM   #65
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I replace my helmets 5 years from the build date, but to each their own. They need to write an updated article backed up with hard data.
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Old 06-30-2013, 09:42 AM   #66
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Moe I dropped mine.


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Old 10-02-2013, 05:23 PM   #67
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great thread!
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Old 10-02-2013, 05:24 PM   #68
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never had any idea about the 5 year DOT rule and i'm riding my 5th bike. Maybe less riding and more reading is in order ;)
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Old 12-01-2013, 02:17 PM   #69
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I found a Shoei X-12 on CL for $300, production date shows M/2010. Do you guys think it's worth it? Moeman? I wish we can tag people in our posts lol.
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Old 03-31-2014, 07:54 AM   #70
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Quote:
Originally Posted by jrarinas View Post
I have a noob question guys, is there an expiration date on helmets when it comes to inspection for track days? The reason why i'm asking is because there is a gentleman selling an x-11 in mint condition but i asked for the production date and it's Mar 2005. Good price too but is it worth it?

Some race orgs have a 5 year life span on a helmet from manufacturing date. Just gotta check the rules for that particular race org.



Any info would help guys. Thanks in advance.




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Old 03-31-2014, 08:16 AM   #71
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here's another thing
how many of you rest your $800 lid on top of your tank when you park your bike ?


here is an experiment

take a styrofoam cup and fill it with a TBS of gas and see how long the cup lasts


that's what you're doing to your lid but resting it on your tank
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Old 04-17-2014, 08:34 AM   #72
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Quote:
Originally Posted by gotama View Post
here's another thing
how many of you rest your $800 lid on top of your tank when you park your bike ?


here is an experiment

take a styrofoam cup and fill it with a TBS of gas and see how long the cup lasts


that's what you're doing to your lid but resting it on your tank
Mine either comes with me or I lock it w/ the strap under the rear seat.
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Old 04-17-2014, 09:58 AM   #73
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This is a great article, how have I not seen this before... definitely not worth the risk if you ask me... common sense says it's easier to replace your helmet than your head... ha
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