Eyeglass fogging in full face helmet - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 21 Old 10-07-2010, 09:57 PM Thread Starter
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Eyeglass fogging in full face helmet

After I totaled an 1100RT-P earlier this year, I replaced a damaged helmet with a Shoei 1100. The helmet is much more comfortable than the Scorpion EX-900 that I had (first helmet ever). My question for people who wear glasses is how do you keep the glasses from fogging up? It is not the interior of the shield but my glasses that fog.

My current glasses have an anti-reflective coating, which unfortunately is hygroscopic and the typical anti-fog sprays do not work on them. I rode home from a weekend campout in the rain a week ago and had to keep the shield cracked open to keep my glasses from fogging, but then I was getting rain blowing in on my glasses. Not fun with a loaded bike. Any words from the wiser ones out there?

Ed Foltyn, KQ1R

2009 Suzuki DL650A
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post #2 of 21 Old 10-07-2010, 10:35 PM
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When I have to wear glasses, I do as you did. Just the shield open just a notch. Actually, I try to keep it out 1/2 a notch but it is a struggle to find the happy spot.

My Shoei came with a breathe guard that attempts to keep your breathe from going up in the helmet... works most of the time but not perfect.
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post #3 of 21 Old 10-07-2010, 11:07 PM
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This may sound silly but make a conscious effort to not be a mouth breather. Breathing through the nostrils is helpful on the exhale as most air is sent downward. Same principle as the 'breath box' available for many helmets.

There is no silver bullet, though. For me, it gets worse as it gets colder.

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post #4 of 21 Old 10-08-2010, 12:24 AM
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1---improve the venting in your helmet. Remove the liner and be sure all the vents are clear of glue or excess styrofoam material. Be sure the vents are open that blow across the face shield, both intake and outlet vents, so you can run with the shield closed. Add a breath box and remove the chin curtain. For brands and models of helmets that offer it, buy the snowmobile shield and breath box.

2---Try various antifog treatments on your glasses. None are perfect. Try Clarity. Try rubbing some dry soap on the glasses, then polishing off with a dry soft cotton cloth.

3---Get contact lenses or refractive eye surgery.

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post #5 of 21 Old 10-08-2010, 12:34 AM
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doesn't your SHOEI have the shield vent position? the 1000 has it; it's the opposite direction you'd go with the shield lock; it props the shield open just about 1/8" -- just enough to get a little breeze to keep the fog away.
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post #6 of 21 Old 10-08-2010, 07:16 AM
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I've been using FogTech on my glasses for at least five years. If this didn't work on coated lenses, I'd get a spare pair.

-Tom (DL650AL2) (KA1TOX) (E-I-E-I-O)

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post #7 of 21 Old 10-08-2010, 08:26 AM
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Surprisingly the only time I've had issues with my glasses fogging up is when using the breath box with my HJC CL-14. With the breath box removed, I don't have an issue with the glasses, but the face shield was fogging. So I got a Pinlok shield with a clear insert and no more fogging issue (although now my chin gets pretty chilly...)

I don't know what can stop the glasses alone... Are you getting enough airflow through the vents both in and out of the helmet? Maybe the problem is too much ventilation? Once the lenses normalize to the air inside the helmet, they shouldn't fog. The problem is (obviously) that the lenses are cold and warm, moist air is blowing across them.... Eliminate the warm moist air and/or the temperature imbalance, and the problem should go away...
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post #8 of 21 Old 10-08-2010, 10:45 AM
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I keep my glasses clean and use clarity. The anti-reflective type of lens is a problem. I'd get rid of them. Know other people with them and they have problems.
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post #9 of 21 Old 10-08-2010, 11:42 AM
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Once you've had the AR lenses, driving and such at night without them sucks - you really notice the reflections back from the inner surface of the lenses.

For just the reasons listed in this thread, I'm going to see about getting some contacts, both for riding and for skiing with goggles on.

Slightly off-topic, I wonder if pinlock visors with inserts have the same issues at night that I found using a Pro-Grip anti-fog insert, where you get reflex from headlights and such, causing double images? I need to get myself a pinlock visor or similar for my current helmet, as a recent day-log rain ride in cool weather made apparent.
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post #10 of 21 Old 10-08-2010, 12:52 PM
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I've had A/R coated lenses in my glasses for 15 years without a problem.

The PinLock shield does have a bit of an issue with double-images at night. For me, it's not a big deal because the reflected ghost lights appear to be a full couple of inches above the actual light, so there's no confusion or disorientation from them. Your mileage may vary. The worst experience was at night in the dark, in the rain... A tall VStream shield, pinlock shield with clear insert, water-speckled mirrors, traffic behind and in front, in-town with lots of street lights and such with semi-dirty glasses was just a bit too much at one point.... It's the only time I've ever had to stop.

{/hijack}
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