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Personally, I wouldn't ride a bike with any glasses which have metallic frame (especially without flexible grips) and real glass lenses because of their weight and potentially sharp edges. I've seen a friend of mine who got pretty deep cuts on his nose after falling from a bike (wearing his expensive and heavy Police sunglasses which tore skin from his ...


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I have had my glasses damaged when falling off/getting hit on my bicycle, even with a helmet. Since my lenses are polycarbonate, they tend to just bounce on the road if they do come out of the frame. I'd think in some of those hits that my glasses would have broken if they were made from glass (especially when my glasses have hit the curb or rocks). Based ...


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As a blind mole cyclist who has worn glasses for 30+ years, I'm more scared of dropping my glasses and smashing them on the ground. Without my prescription glasses, I can walk but I certainly can't ride or drive safely. However my helmet is always worn properly, so it provides a shelf of protection out from the forehead. I've had two significant ...


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I personally don't think it is something to stress over. Most times glasses will break at the frame before the actual lens shatters. More than likely you will break a lens free of the frame rather than shattering it in the frame. If there is an impact centered on the lens strong enough to shatter it, more than likely your eye would be harmed either way. ...


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I think you are concerned with the 'rate of degradation'. I've designed sports helmets recently that use similar materials (EPS for example), but not for so long as to ascertain all aspects of durability. Your biggest concern would be loss in mechanical strength on photodegradation. The rate of change in the mechanical integrity of expanded polystyrene ...


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A motorcycle helmet will be too hot and heavy for cycling. Spend $20 USD and get a cheap bicycle helmet - you'll be a lot more comfortable and happy.


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Coming back 6 months after I posted this question, I'm happy to report that there has been an enormous reduction in hazardous driver behaviour, and it all changed the day I installed a 20W LED headlight. It was $10 on ebay. Best insurance ever, every rider should have one. Previously I was using a USB rechargeable strap on one (moon mask) - but it just ...


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Answer: Yes - anything on your helmet may affect its ability to function. Remember the skiing accident that gave Michael Schumacher brain damage? http://www.telegraph.co.uk/sport/motorsport/formulaone/michael-schumacher/10640839/Michael-Schumacher-skiing-crash-did-helmet-camera-cause-head-injuries.html That was not cycling, but he managed to run his ...



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