head and neck restraint required

[Matt Rowe]

Originally posted by mlytle@Dec 21 2005, 06:36 PM
for $15 you can have a hans recertified by the company. that makes a used one a little more palatable.

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Well, that's the first time I've seen that. Hmm, I learn something new everyday. I am curious what their recertification involves? Ultrasonic or xray inspection? Composite inspection is still as much black art as science.

[mlytle]

Originally posted by Matt Rowe@Dec 22 2005, 02:05 AM
Well, that's the first time I've seen that. Hmm, I learn something new everyday. I am curious what their recertification involves? Ultrasonic or xray inspection? Composite inspection is still as much black art as science.

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topic came up on the bmw cr forum soon after the new rule came out. the big issue was that only very recently did hans devices start shipping with sfi stickers. what were all the early adopters of hans devices supposed to do? they had the exact same hans, but no sfi sticker on it. solution, send it back for inspection and (re)certification. no idea what the process is.

[dj10]

Originally posted by mlytle@Dec 21 2005, 10:27 PM
topic came up on the bmw cr forum soon after the new rule came out. the big issue was that only very recently did hans devices start shipping with sfi stickers. what were all the early adopters of hans devices supposed to do? they had the exact same hans, but no sfi sticker on it. solution, send it back for inspection and (re)certification. no idea what the process is.

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Marshall, not only that but, what is the life expectency of the hans before you replace them. If you have to replace helmets every 5 years seems to me you need to replace the hans also since they are made of the same materials?

[JamesB]

Originally posted by dj10@Dec 22 2005, 12:10 PM
Marshall, not only that but, what is the life expectency of the hans before you replace them. If you have to replace helmets every 5 years seems to me you need to replace the hans also since they are made of the same materials?

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Mainly the reason for replacing the helmet is that your sweat and wearing it compresses the impact absobtion matieral over time making it less effective (even SNELL published that.) The Shell itself does weather over time too, but its mostly the overall construction of the helmet that most are worried about.

For the hans I dont know, if you ask me I would likely just replace the straps every time I replaced a helmet. Its a small bit to pay just like for belts that ensures it will work when you need it.

But thats my view on any of the H&N out there so you need to plan to service it to ensure its working properly.

[leggwork]

I believe that the recommendation is to replace the Hans tethers every 3 years.

One thing that makes me wonder about mandating hans or other SFI 38.1 device is that you generally have to install posts into your helmet. Surely this voids the helmet warranty and likely the snell certification. On the FIA site, there is a "Technical List 29" that shows which helmets are approved for use with a hans. It is interesting that groups can mandate the hans but it is ok to have a non-compliant helmet.
bruce

Originally posted by JamesB@Dec 22 2005, 04:21 PM
Mainly the reason for replacing the helmet is that your sweat and wearing it compresses the impact absobtion matieral over time making it less effective (even SNELL published that.) The Shell itself does weather over time too, but its mostly the overall construction of the helmet that most are worried about.

For the hans I dont know, if you ask me I would likely just replace the straps every time I replaced a helmet. Its a small bit to pay just like for belts that ensures it will work when you need it.

But thats my view on any of the H&N out there so you need to plan to service it to ensure its working properly.

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