OP
UTC

Hooked
2009 250 GTS Super
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Location: pasadena, los angeles
 
Hooked
2009 250 GTS Super
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Location: pasadena, los angeles
UTC quote
I don't feel a difference with them open or closed.

what is the point of them/intended function?
@davelx avatar
UTC

Molto Verboso
2016 Piaggio BV-350
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Posts: 1879
Location: Virginia, USA, from London, England
 
Molto Verboso
@davelx avatar
2016 Piaggio BV-350
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Posts: 1879
Location: Virginia, USA, from London, England
UTC quote
noeltazz wrote:
I don't feel a difference with them open or closed.

what is the point of them/intended function?
On my helmet, with them open, I get airflow over the top of my head, venting out of the rear exhaust port of my helmet. If you have a helmet with top vents but no exhaust port, the effect is diminished, because the air doesn't flow properly.
OP
UTC

Hooked
2009 250 GTS Super
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Posts: 455
Location: pasadena, los angeles
 
Hooked
2009 250 GTS Super
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UTC quote
DaveLX wrote:
On my helmet, with them open, I get airflow over the top of my head, venting out of the rear exhaust port of my helmet. If you have a helmet with top vents but no exhaust port, the effect is diminished, because the air doesn't flow properly.
I don't get it, you have a helmet on your head, how can you feel air, isnt the helmet in the way?


when my helmet is on i feel nothing but helmet shell
UTC

Ossessionato
X10 350
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X10 350
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UTC quote
venturi
@davelx avatar
UTC

Molto Verboso
2016 Piaggio BV-350
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Posts: 1879
Location: Virginia, USA, from London, England
 
Molto Verboso
@davelx avatar
2016 Piaggio BV-350
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Posts: 1879
Location: Virginia, USA, from London, England
UTC quote
noeltazz wrote:
DaveLX wrote:
On my helmet, with them open, I get airflow over the top of my head, venting out of the rear exhaust port of my helmet. If you have a helmet with top vents but no exhaust port, the effect is diminished, because the air doesn't flow properly.
I don't get it, you have a helmet on your head, how can you feel air, isnt the helmet in the way?


when my helmet is on i feel nothing but helmet shell
Look inside your helmet - there's a liner and there's usually cut outs and space around the vents. So air can flow into your helmet at speed, and out of the back, if your helmet is so designed that way.

What sort of helmet do you have?

This might help you -
Forum member supplied image with no explanatory text
OP
UTC

Hooked
2009 250 GTS Super
Joined: UTC
Posts: 455
Location: pasadena, los angeles
 
Hooked
2009 250 GTS Super
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UTC quote
I have a N44
@davelx avatar
UTC

Molto Verboso
2016 Piaggio BV-350
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Molto Verboso
@davelx avatar
2016 Piaggio BV-350
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UTC quote
noeltazz wrote:
I have a N44
So the back of your helmet should look like the pic below....

There are clearly exhaust ports, big ones at that. Did you look on the Nolan website?
Quote:
from nolan-USA.com:
The extraordinary venting mechanism is the most complex that has been ever offered in a Nolan helmet: it features the Air-booster system and a venturi effect-based hot air extractor. The central slider controls the opening of the frontal air intake while the two side sliders open and close the air extractors along the side of the crown.
Forum member supplied image with no explanatory text
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'70 Super 150, Medley 150S, '23 Ducati Monster SP
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UTC quote
Re: What do the vents on the top of the helmet do ?
noeltazz wrote:
I don't feel a difference with them open or closed.
You're not riding fast enough.
@old_as_dirt avatar
UTC

Veni, Vidi, Posti
2007 GTS
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Veni, Vidi, Posti
@old_as_dirt avatar
2007 GTS
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UTC quote
some vents on helmets work very well for air flow, others suck and are mainly there for looks it seems.

My HJC RPHA Max has awesome vents that work.
@stickyfrog avatar
UTC

Moderatus Rana
MP3 250 and 2 MP3 500s
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Moderatus Rana
@stickyfrog avatar
MP3 250 and 2 MP3 500s
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UTC quote
I have a Shoei Neotec in white and with both the front and rear vents open I get a very strong flow of air down over the top of my head. It is a big help in Florida. The only downside is that the big scoop in the front adds a little extra noise but it is still much quieter than my last helmet that had shit for airflow.
@davelx avatar
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Molto Verboso
2016 Piaggio BV-350
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Molto Verboso
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2016 Piaggio BV-350
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UTC quote
stickyfrog wrote:
The only downside is that the big scoop in the front adds a little extra noise but it is still much quieter than my last helmet that had shit for airflow.
Resulting in a pungent odour and mandatory hair wash after every ride. Annoying. Laughing emoticon
@stickyfrog avatar
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Moderatus Rana
MP3 250 and 2 MP3 500s
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Moderatus Rana
@stickyfrog avatar
MP3 250 and 2 MP3 500s
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UTC quote
DaveLX wrote:
stickyfrog wrote:
The only downside is that the big scoop in the front adds a little extra noise but it is still much quieter than my last helmet that had shit for airflow.
Resulting in a pungent odour and mandatory hair wash after every ride. Annoying. Laughing emoticon
I wondered where that smell was coming from.
@bendcyclist avatar
UTC

Molto Verboso
2006 GTS 250ie in Silver
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Location: Bend, OR
 
Molto Verboso
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2006 GTS 250ie in Silver
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UTC quote
Also remember that if you have a wind sheild installed it will block airflow.
@bendcyclist avatar
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Molto Verboso
2006 GTS 250ie in Silver
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Molto Verboso
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UTC quote
stickyfrog wrote:
DaveLX wrote:
stickyfrog wrote:
The only downside is that the big scoop in the front adds a little extra noise but it is still much quieter than my last helmet that had shit for airflow.
Resulting in a pungent odour and mandatory hair wash after every ride. Annoying. Laughing emoticon
I wondered where that smell was coming from.
Your hair is farting. Also another reason for the vents.
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Hooked
2009 250 GTS Super
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UTC quote
bendcyclist wrote:
Also remember that if you have a wind sheild installed it will block airflow.
I have a tall.... this is probably why I don't notice the vents doing anything at all
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BV400, Primavera 150, Yamaha Zuma 125
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UTC quote
bendcyclist wrote:
stickyfrog wrote:
DaveLX wrote:
stickyfrog wrote:
The only downside is that the big scoop in the front adds a little extra noise but it is still much quieter than my last helmet that had shit for airflow.
Resulting in a pungent odour and mandatory hair wash after every ride. Annoying. Laughing emoticon
I wondered where that smell was coming from.
Your hair is farting. Also another reason for the vents.
You're wearing your helmet wrong. You're supposed to wear it on your head, not your butt.
@judy avatar
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World Traveler
2007 LX150 Daring Plum Leonardo Da Vespa
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UTC quote
JKJ ROFL emoticon Like others have said venting. My Wizard helmet has good airflow. My Diesel one is so so but it's a 3/4 with a pull down face shield that goes to my nose. I get airflow in on the sides. No windscreen. Windscreens probably why you can't feel it. The helmet you have seems to have good airflow (don't see much complaining on here from owners). I air mine out before i put it in it's carrying case. Also squirt a little Febreeze in there occasionally.
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2 - Many
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2 - Many
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UTC quote
stickyfrog wrote:
I have a Shoei Neotec in white and with both the front and rear vents open I get a very strong flow of air down over the top of my head. It is a big help in Florida. The only downside is that the big scoop in the front adds a little extra noise but it is still much quieter than my last helmet that had shit for airflow.
Best airflow I have ever had with a helmet! Next would be my Arai, those little visor eyebrow vents actually work.
@sunburst avatar
UTC

Hooked
2009 Vespa LX 150, Moto Guzzi V7II Racer
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UTC quote
judy wrote:
Also squirt a little Febreeze in there occasionally.
Never thought of that, will give it a try.
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Piaggio BV250
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UTC quote
judy wrote:
....... Also squirt a little Febreeze in there occasionally.
The best stuff I've found is body armor deodorizer, found at any local cop shop. Both body armor and helmet interiors can get really, really nasty.
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UTC quote
Re: What do the vents on the top of the helmet do ?
noeltazz wrote:
I don't feel a difference with them open or closed.
You need to go faster.
@judy avatar
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2007 LX150 Daring Plum Leonardo Da Vespa
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UTC quote
DOG will try and find some. Thanks for the heads up. 8)
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UTC

Molto Verboso
lx150
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Location: Adrian, Mi
 
Molto Verboso
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lx150
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UTC quote
Re: What do the vents on the top of the helmet do ?
[quote="Motovista"]
noeltazz wrote:
I don't feel a difference with them open or closed.
You need to go faster.[/quote

At what speed will your head be sucked out of those vents???
@web-tech avatar
UTC

Veni, Vidi, Posti
2008 MP3 500, 2013 BV350, 2020 Vespa Sei Giorni, 2008 Vespa S150
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UTC quote
Sunburst wrote:
judy wrote:
Also squirt a little Febreeze in there occasionally.
Never thought of that, will give it a try.
Febreeze just covers up smells, get OdorXIt, it kills bacteria that causes the odor.
Soak the liner well and let it dry a day or two, may require a second treatment.
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UTC

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07 GT200, Flip flops
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@jsunstar avatar
07 GT200, Flip flops
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Location: Cayo Hueso: an Island at the end of the road
UTC quote
also, a little known fact about the vents:
they are there to rid your helmet of stinging insects. if a bee or wasp flies into your helmet, you can close your eyes, pinch your nose and blow out your ears to eject the bug from your helmet...
do this with caution because you can wreck from lack of vision or blowing so hard you pass out from lack of oxygen.
most of the time they just end up in your shirt anyways so i dont wear a helmet or shirt to alleviate the issue in the first place.
@vespiti avatar
UTC

Hooked
GTV 250, Mana 850, Stella 2T, BMW R75/6, 64 VBB, 64 GS160, 84 Moto Guzzi LeMans Mk3
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Hooked
@vespiti avatar
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UTC quote
Who's buried in Grants Tomb
@judy avatar
UTC

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2007 LX150 Daring Plum Leonardo Da Vespa
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@judy avatar
2007 LX150 Daring Plum Leonardo Da Vespa
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UTC quote
WEB mine doesn't stink so i hit it with the Febreeze occasionally. Just because.I leave it out to air dry when it's wet. Will clean it occ with that stuff tho. Thanks.
@t5bitza69 avatar
UTC

Veni, Vidi, Posti
T5s
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Location: The West Of Yorkshire ... Gods Country
 
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@t5bitza69 avatar
T5s
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UTC quote
warning tale
sneezed in me lid on the way to work yesterday ...... luckily it didnt get on the visor as i wear a neck tube .... but it musta slid down as it landed on me bottom lip n all i could do was suck it back in ... twas cold too
hope ya not eating
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Ossessionato
X10 350
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Location: London
 
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X10 350
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Location: London
UTC quote
WEB-Tech wrote:
Sunburst wrote:
judy wrote:
Also squirt a little Febreeze in there occasionally.
Never thought of that, will give it a try.
Febreeze just covers up smells, get OdorXIt, it kills bacteria that causes the odor.
Soak the liner well and let it dry a day or two, may require a second treatment.
I just wash mine by hand in mild detergent before it gets to that stinky stage.
@web-tech avatar
UTC

Veni, Vidi, Posti
2008 MP3 500, 2013 BV350, 2020 Vespa Sei Giorni, 2008 Vespa S150
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Veni, Vidi, Posti
@web-tech avatar
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UTC quote
Benelli Boy wrote:
WEB-Tech wrote:
Sunburst wrote:
judy wrote:
Also squirt a little Febreeze in there occasionally.
Never thought of that, will give it a try.
Febreeze just covers up smells, get OdorXIt, it kills bacteria that causes the odor.
Soak the liner well and let it dry a day or two, may require a second treatment.
I just wash mine by hand in mild detergent before it gets to that stinky stage.
It's a pain in the ass to get my liner back in my Nexx, much easier to soak it down once a month and it never smells anymore.
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