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21 Dec 2014
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Contributing Member
HUBB regular
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Join Date: Feb 2010
Location: Tucson, Arizona USA
Posts: 29
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I'm am ATGATT advocate. And I've ridden and lived in mountainous, tropical and desert climates.
With the variety of vented and mesh gear options, I don't believe it makes sense to risk road rash or more serious injury regardless of temperature or comfort. But that does require good gear and perhaps multiple jackets for summer vs winter vs rain vs desert. I resolve this by buying good but used gear. I've found most of my kit on ADV RIDER.
But I'm also not going to bash those who choose to rider with lighter or less gear. I did the same when I was a teenager and was lucky enough to survive a few minor bang ups and avoid and serious injury. Everyone must make their own decisions and deal with the results of their choices. But I vote for and encourage ATGATT!
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Roborider
Rob Osborne
Vail (Tucson), Arizona USA
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21 Dec 2014
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Veteran HUBBer
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Join Date: Apr 2006
Posts: 2,372
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Putting a myth to bed
Vented jackets and trousers make you feel the breeze and increase your perceived comfort but, in reality, they allow your sweat to escape.
Stating the obvious -sweat is precious water being used to cool down your body. Allowing it to escape in high heat conditions where replacement water may be scarce is very unwise. Keeping hydrated at all times is critical.
Want to feel great as you are baking? as you refuel, find a hosepipe/tap/water can and drench your jacket, trousers and helmet and keep those vents closed.
Fabulous
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21 Dec 2014
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Registered Users
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Join Date: Feb 2011
Location: Montreal, Canada
Posts: 116
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Bertrand I have to strongly disagree with you.
Sweat cools you by evaporating, hence keeping your vents open is the best way to evaporate that thin layer of water on your skin and making you cooler. When humidity is really high, heat becomes unbearable because sweat accumulates and evaporates slowly. Opening the vents on your jackets and pants, allowing the maximum flow of air to pass on your body to accelerate the evaporation of water is the best way to cool you down.
Suggesting to keep your vents closed during extreme heat is IMHO a very bad advice.
Google the physics of sweats and evaporative cooling.
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21 Dec 2014
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Registered Users
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Join Date: Feb 2011
Location: Montreal, Canada
Posts: 116
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Just to add...
Of course keeping hydrated is always important, especially when you sweat a lot.
That being said if your vents are open and much wind is passing through, around, your body, you might not even need to sweat because wind dissipates heat very fast.
The purpose of cooling and venting is to allow your body to dissipate the heat.
Mesh panels and vents opening are there for a reason. Those engineers working on the development of summer riding gear certainly know a little about the physics of heat dissipation.
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21 Dec 2014
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Veteran HUBBer
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Join Date: Apr 2006
Posts: 2,372
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You are quite free to disagree!
Retaining moisture on your body / in your clothing acts as an 'air conditioner' and continues to cool you down.
Allowing this moisture to escape is fine as long as you can drink more water to replace what is being /has been lost- If that is the case, vent away; my jacket and trousers have vents too and let some heat out.
However, if your water supply is low, as I said, before, uncontrolled venting isn't wise. Jackets/trousers are not totally sealed- heat will leave via the gaps and through the materials in any case.
Your water- your retention or your loss- it's your decision.  A chacun son truc jeune homme!
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21 Dec 2014
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Registered Users
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Join Date: Feb 2011
Location: Montreal, Canada
Posts: 116
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Quote:
Originally Posted by Bertrand
Retaining moisture on your body / in your clothing acts as an 'air conditioner' and continues to cool you down.
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My understanding is that water that is not being evaporated, warms up to your body temperature and ends up doing nearly nothing to cool you down.
Mais bon, si ça fonctionne pour vous, pourquoi pas?
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22 Dec 2014
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R.I.P.
Veteran HUBBer
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Join Date: Aug 2003
Location: california
Posts: 3,824
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Quote:
Originally Posted by Bertrand
Vented jackets and trousers make you feel the breeze and increase your perceived comfort but, in reality, they allow your sweat to escape.
Stating the obvious -sweat is precious water being used to cool down your body. Allowing it to escape in high heat conditions where replacement water may be scarce is very unwise. Keeping hydrated at all times is critical.
Want to feel great as you are baking? as you refuel, find a hosepipe/tap/water can and drench your jacket, trousers and helmet and keep those vents closed.
Fabulous
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This is counterintuitive, but all true, or so the experts tell us. You really want to keep the "sweat inside". Too much air flow can really dehydrate you fast! We still see the Harley guys riding in a tank top and beany helmet in severe heat waves. Then at the next Tavern stop, they pass out. Been there, seen this in person. So cover up, keep some of the sweat inside. Booze makes it all worse.
It's a delicate balance between comfort and safety. Some air flow/venting is good but TOO MUCH is NOT good. And of course, as stated : Drink Drink Drink!
In the tropics, riding small roads at low speed, a mesh jacket works well, but it's always hard to stay comfortable with high humidity with high temps.
I've used the wet T shirt/helmet technique for decades. Great in Desert, not so much in tropics.
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23 Dec 2014
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Registered Users
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Join Date: Apr 2005
Location: Oxford UK
Posts: 2,120
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Quote:
Originally Posted by mollydog
I've used the wet T shirt technique for decades.
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Now there's a vision for eight o'clock in the morning.
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