• There were many reasons for the change of the site software, the biggest was security. The age of the old software also meant no server updates for certain programs. There are many benefits to the new software, one of the biggest is the mobile functionality. Ill fix up some stuff in the coming days, we'll also try to get some of the old addons back or the data imported back into the site like the garage. To create a thread or to reply with a post is basically the same as it was in the prior software. The default style of the site is light colored, but i temporarily added a darker colored style, to change you can find a link at the bottom of the site.

Helmet ventilation and cooling for hot desert riding?

Peter Aawen said:
:agree: with your post UP, altho if you increase the amount of airflow IN to your helmet, you'll also need to increase the helmet's capability to let air OUT, or you'll end up with a pressurised hot air box on your head! You need air FLOW over your sweating head to cool it down, or you'll just bake in there! :gaah:

That's why the SHOEI GT-Air's have front vents AND a rear vent - it helps get the air out in a place that means the air-flow is travelling over the head areas where most of us sweat and it helps cool the head that's inside the helmet! And the vent holes on my helmet are a fair bit larger than those pin-pricks shown in your pic!! :shocked:
Click to expand...

Right you are, Peter :cheers:

My helmet has two intake and four outlet holes for a total of six. Each is about 1/4" in diameter.
 
UtahPete said:
The next thing I'm going to try is to figure out a way to improve the aggressiveness of the air intake scoop. I imagine it's made low profile like this for reduced turbulence and noise, rather than optimizing the capture of incoming air.

Any ideas from the ingenious D-I-Y'ers out there?

View attachment 175474
Click to expand...


Hi Pete,
Before the :spyder2: and it's windshield I did add a "scoop" to a helmet. It did help ( but a windshield lowered it's effectiveness). I used a thermoplastic and formed it to the desired shape. Even added an insect screen:thumbup: ( but that helmet is gone). The "blast furnace effect" was a non-issue as the amount of air flow isn't that much---- but a noticeable air flow increase. On my newer helmet, I did open up the air passages from the top vent also.

Lew L
 
Lew L said:
Hi Pete,
Before the :spyder2: and it's windshield I did add a "scoop" to a helmet. It did help ( but a windshield lowered it's effectiveness). I used a thermoplastic and formed it to the desired shape. Even added an insect screen:thumbup: ( but that helmet is gone). The "blast furnace effect" was a non-issue as the amount of air flow isn't that much---- but a noticeable air flow increase. On my newer helmet, I did open up the air passages from the top vent also.

Lew L
Click to expand...

Hi Lew, I thought I remembered you posting something like that thermoplastic scoop some years ago. Do you have any pics or suggestions on how to do that?

How much did you enlarge the airway passages and how did you go about doing that?
 
On pic 4 it looks like the foam could be opened a hair on the upper left hole of the pic, like it's malformed - prob splitting hairs.

If you put a scoop on top of your noggin, it's may make it uncomfortable on your neck, gonna catch the wind more - and may cause helmet lift. But a small sheet of kydex wouldn't be all that expensive to experiment with.
 
JoshHefnerX said:
On pic 4 it looks like the foam could be opened a hair on the upper left hole of the pic, like it's malformed - prob splitting hairs.

If you put a scoop on top of your noggin, it's may make it uncomfortable on your neck, gonna catch the wind more - and may cause helmet lift. But a small sheet of kydex wouldn't be all that expensive to experiment with.
Click to expand...

I was wondering what material to use. This looks like just the right solution. Thanks.
 
Lew L said:
Hi Pete, Before the :spyder2: and it's windshield I did add a "scoop" to a helmet. It did help ( but a windshield lowered it's effectiveness). I used a thermoplastic and formed it to the desired shape. Even added an insect screen:thumbup: ( but that helmet is gone). The "blast furnace effect" was a non-issue as the amount of air flow isn't that much---- but a noticeable air flow increase. On my newer helmet, I did open up the air passages from the top vent also. Lew L
Click to expand...

Lew, it was on a thread I started last August that you mentioned the air scoop mod on your helmet;

"Hi Pete, The LS2 helmet has a small and ineffective air intake at the crown of the helmet. I heated a rubbery, dark, plastic material into a curve shape and cut it like a scoop. It's small and not obtrusive but it helps. I can try to get a pix later this evening."

It seems you later posted a picture, but it's no longer there. Can you post it again here? Thanks.
 
Hi Pete,

Helmet and pix are long gone.The right plastic ( thermosetting) and a heat gun should do the trick. I removed the liners of the helmet and found 2 holes leading to the top vent. A dremel tool did the job but it was messy, thank goodness for an air compressor.
Lew
 
Lew L said:
Hi Pete, helmet and pix are long gone.The right plastic ( thermosetting) and a heat gun should do the trick. I removed the liners of the helmet and found 2 holes leading to the top vent. A dremel tool did the job but it was messy, thank goodness for an air compressor. Lew
Click to expand...

Well, I ordered some of that special plastic which should arrive next week from Amazon https://www.amazon.com/gp/product/B00E8R9NN6/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

Meanwhile, I've made a mockup with thin aluminum sheet, which will also serve as a form for the final product;

Helmet air scoop template.jpg
 
Air flow

UtahPete said:
My helmet is a white HJC-IS Max II. (BTW, I used this opportunity to wash the liner and pads for the first time in 3 years - they were pretty grungy).

I opened up the inside of the helmet (i.e. removed the liner and pads) and blew out the 6 air holes with my compressor. There was no blockage in the ports (holes). I decided not to modify them in any way. Attached are some pics of the helmet inner with and without liner. Should be able to see the six holes, which are in two channels running front to back. Also, the liner has slots in it corresponding to the channels.

So, it is what it is; plenty of venting for a standard, popular helmet, but still inadequate for hot desert riding.

View attachment 175468 View attachment 175469 View attachment 175470

View attachment 175471 View attachment 175472 View attachment 175473
Click to expand...



Pete,Pete, Pete,

I removed the liner in my helmet------- and the front holes didn't line up with the vent on top of the helmet!!! Not even close and no flow. The ones in the back were perfect. A few moments with a dremel tool getting them properly lined up will make a big difference. I used my air nozzle with a 3" very thin extension. Poked around with it to see ( feel) for air flow and this led to removing enough foam allow good air flow but not weaken the eps foam.
 
Lew L said:
I removed the liner in my helmet------- and the front holes didn't line up with the vent on top of the helmet!!! Not even close and no flow. The ones in the back were perfect. A few moments with a dremel tool getting them properly lined up will make a big difference. I used my air nozzle with a 3" very thin extension. Poked around with it to see ( feel) for air flow and this led to removing enough foam allow good air flow but not weaken the eps foam.
Click to expand...

Lew, did you see my helmet pics? I removed the liner to check out the vent holes. There are 6 of them.

I put the nozzle from my air compressor into each one to blow out anything (bugs?) that may have become lodged in there. There was no debris, but I did feel the compressed air coming through on the outside of the vents.

So, I'm assuming no blockage at this point and just trying to get more air forced through the channels; hence the scoop on the front.
 
UtahPete said:
Lew, did you see my helmet pics? I removed the liner to check out the vent holes. There are 6 of them.

I put the nozzle from my air compressor into each one to blow out anything (bugs?) that may have become lodged in there. There was no debris, but I did feel the compressed air coming through on the outside of the vents.

So, I'm assuming no blockage at this point and just trying to get more air forced through the channels; hence the scoop on the front.
Click to expand...


Hi Pete, I hate to assume anything but try this----- take a small, thin ( smaller than a pencil ) probe and gently push it into the two front vent holes--AND look for it in the open top vent. Mine DID NOT show through but now they do. If the holes from the shell and the EPS liner don't line up ----- air flow WILL be restricted alot . I expect my modified vent to work much better. And it still closes if I want it to.

This got me motivated to inspect my wifes helmet. The top vent on her helmet had NO holes for the top ( A fake vent). I did modify the chin bar vent and it will work much better.
 
Lew L said:
Hi Pete, I hate to assume anything but try this----- take a small, thin ( smaller than a pencil ) probe and gently push it into the two front vent holes--AND look for it in the open top vent. Mine DID NOT show through but now they do. If the holes from the shell and the EPS liner don't line up ----- air flow WILL be restricted alot . I expect my modified vent to work much better. And it still closes if I want it to. This got me motivated to inspect my wifes helmet. The top vent on her helmet had NO holes for the top ( A fake vent). I did modify the chin bar vent and it will work much better.
Click to expand...

Will do. Thanks for the tip. Now, where can I get some pipe cleaners ...?
 
UtahPete said:
Here is a new-to-me helmet from Klim that in addition to providing better crash protection also claims full-head ventilation, using a different type of material for the impact liner.

https://www.motorcyclenews.com/news/new-tech/klim-f5-adventure-helmet/

For now it seems to be available only as an adventure riding helmet. Here's a link to Revzilla's website page. https://www.revzilla.com/common-tre...-helmet-and-the-technology-that-sets-it-apart
Click to expand...

Just saw a similar technology come up in bicycle helmets - think bontrager..?
 
You must log in or register to reply here.

Similar threads

T
My Best NAV/Audio solution for 2012 RTL
Replies
0
Views
623
Tonylmiller
T
W
HowTo: TricLED 2020 RT rear run/brake and yellow turn signal
Replies
7
Views
2K
Eranical
E
T
Helmet/Riding Position question...
Replies
10
Views
4K
Zoot
Zoot
OverHillAndDale
SENA Momentum INC (Intelligent Noise Control) helmet review, part 2
Replies
0
Views
1K
OverHillAndDale
OverHillAndDale
BajaRon
Cool / Cold Weather Riding Gear
2
Replies
26
Views
13K
BajaRon
BajaRon
Back
Top