Modern Vespa

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.

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

venturi

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 -

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?

You're not riding fast enough.

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.

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.

Resulting in a pungent odour and mandatory hair wash after every ride. Annoying.

I wondered where that smell was coming from.

Also remember that if you have a wind sheild installed it will block airflow.

Your hair is farting. Also another reason for the vents.

I have a tall.... this is probably why I don't notice the vents doing anything at all

You're wearing your helmet wrong. You're supposed to wear it on your head, not your butt.

JKJ 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.

Best airflow I have ever had with a helmet! Next would be my Arai, those little visor eyebrow vents actually work.

Never thought of that, will give it a try.

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.

You need to go faster.

DOG will try and find some. Thanks for the heads up. 8)

[quote="Motovista"] You need to go faster.[/quote

At what speed will your head be sucked out of those vents???

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.

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.

Who's buried in Grants Tomb

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.

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

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.