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Archive through April 12, 2019Ratbuell30 04-12-19  01:49 pm
         

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Jaimec
Posted on Friday, April 12, 2019 - 03:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Got that right, Joe. Same reason transition lenses don't work inside a car unless it's a convertible. The glass blocks the UV that makes the lenses change.

I have a regular pair of sunglasses I keep in the car for that reason.
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Ourdee
Posted on Friday, April 12, 2019 - 03:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I keep sunglasses in car that are safety glasses. Items should have other functions.
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Tootal
Posted on Saturday, April 13, 2019 - 09:58 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'm another fan of the Nolan. I love being able to just easily flip it up to communicate at stop lights etc. It's vented fairly well and the internal sun shade works great and it keeps you from having your sun glasses mashed up against the side of your head. I believe the Nolan is for oval shaped heads, and as mentioned above, the helmet that fits the best is the best one for you.
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Aesquire
Posted on Saturday, April 13, 2019 - 11:37 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

That's odd. My glasses work in a car.

Maybe New York law on dark car Windows is a reason?

https://www.skincancer.org/prevention/are-you-at-r isk/sun-hazards-in-your-car

Or not.

https://www.autoblog.com/2013/09/06/not-all-car-wi ndows-protect-against-uv-rays/

https://www.acplasticsinc.com/informationcenter/r/ uv-filtering-vs-uv-transmitting

Polycarbonate, Lexan, does block UV. Snell & DOT don't have visor tests iirc?
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Aesquire
Posted on Saturday, April 13, 2019 - 11:50 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

http://www.smf.org/testing

They shoot the visor with a calibrated pellet rifle.

And for racing helmets, run a blowtorch over shell, trim, & visor.

Then the helmet, which may be on fire, must self extinguish.

That's nice.

I'll skip the argument on Shell vs. DOT with the observation that one is better than the other at different values of crash. Both ways. Ditto British specs. ( my Suomy is to British & DOT spec )

If you knew exactly what impact you are going to have, you could pick the best spec. But if you had that precognative power, you'd just stop for ribs instead, so never mind. ; )

IMHO fit is so much more important than rating, rating isn't a question.
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Aesquire
Posted on Saturday, April 13, 2019 - 11:57 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

And my Transitions prescription glasses work in my HJC & Suomy helmets, ( unless I mount the shiny iridium blue metallic blocks all UV visor ) and polycarbonate blocks UV, so I'm guessing they are acrylic. ???

Btw they offer a "driving Transitions" glasses in a darker & polarized version. Too dark for me as normal in house glasses.
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