Question for those who have tried it: Does the Giro Advantage II have more airflow than the LG Rocket? What I mean is airflow through the helmet. I like my LG Rocket (although it looks like a ridiculously big bucket on my narrow head), but, it does not seem to have that much airflow through the small vents. The Advantage II seems to have more openings in the front. Does it have better airflow?
The new '08 LG Rocket aero helmet has a new set of vents added to it for exactly the reasons you cmpare it t the Giro Advantage 2.
We sold through every Giro Advantage 2 aero helmet we had in stock (maybe a dozen or so) in two days and have 20 more on the way. Obviously they are pretty popular…
But are they popular because a lot of people love them after they’ve tried them, or are they popular because of all the hype. Your reply doesn’t seem to answer the OPer’s question. I just ordered a rocket with 7 vents vs the old 4 vent version. It should be in tomorrow. Ventilation is my key concern. Does your helmet have 4 or 7 vents? I did notice that the Giro does not have vents on top, which is why I shyed away from it. The front vents may produce airflow, but in an unscientific observation by me, it seemed that heat coming off of your head would not be allowed to escape adequately. Let me know on the vent thing, because this may be a concern for me. Thanks.
I have the 2007 version of the LG Rocket with the 4 vents on the front. I just saw a picture (for the first time) of the 2008 Rocket that Tom mentioned that has 7 vents. It appears to me that the 2008 version (7 vents) would have significantly better airflow than the 2007 version (4 vents) b/c of the vents in the top/back that would seems to draw the air through it.
So, from Tom’s post, and what I have pieced together, it appears that the Advantage II would have better airflow than the 2007 LG Rocket (4 vents). Seeing the 2008 Rocket (7 vents) I’m not sure the Advantage II would be any better, but, I have not seen them side-by-side.
Tom or anyone else who have seen the 2008 Rocket and Advantage II able to comment?
the advantage is A LOT hotter for me than the LG rocket… not even close… the giro is so tight, it s like a swim cap on your head… the louis garneau feel like a parachute with so much air moving around your head…
i do prefer the giro as it s faster by not been a parachute… but it s definitly hotter… at least for my shape of head and i dontknow what the giro rep says about air circulation because there is about none in mine… i race a few times in both helmet and if it s not too hot at ironman canada… i will use the giro!
How do you know the giro is faster than the LG?
i will not say it s faster for you, it s faster for me… the LG is a PARTACHUTE.(not a design problem but for my head)… so much air is entering from the front…not the vent… the front of the helmet… it s terrible… it s worse than a normal helmet.
i test everything i have in a very scientific way with powermeter on my bike… i m a man of science!!!
jonnyo… Would a visor solve that?
Sergio uses the LG Rocket. Perhaps the only ‘problem’ is its weight.
Sergio
I just got my Advantage 2 late last week and took it for a 3 hour test ride in the heat of Missouri. It was perfectly fine for me in the heat, but I will say that it is hotter than the LG rocket. Hotter, yes, but it was still ok for me.
Other observations are very good fit for larger heads, no extensive wind noise and it’s pretty darn comfortable on my big melon.
I would expect that Spiuk will have to lower their prices soon. No way is the Spiuk worth $70 bucks more than the Giro. It is a tossup between the LG and the Giro though. If your head gets hot easily, go with the LG.
no, i had the visor for hawaii and still had the problem of having a air current going from under the visor to the top of my head. i think the Lg is nice, but not as nice as the giro and i do want to say that it s very personal…everyone will feel different, there is no right or wrong answers…
what do you mean about the weight? the weight of the helmet? that is only a pound? maybe harder on a kid head but i would douth that? i use ot play hockey and be a goaltender and our helmet were a lot heavier!!!
A lot of factors other than vents affect the ventilation of a helmet. Internal airflow through the channels in the helmet has a lot to do with how much air moves through the helmet. This is my own personal opinion, but I would guess that vents on the top of the helmet do not make all that much difference in how cool a helmet is. Air flows through the helmet. Cooling comes from the cool air coming in from the front, and moving out the back of the helmet. If you take a look at the new Ionos, the biggest difference between it and the Atmos are the larger exhaust vents on the back of the helmet.
I am sure that vents on top make some difference, but the real key is the front and back.
Also, one of the key advantages of the Advantage2 is that it tests the same in the wind tunnel with vents and without. I don’t think that many other manufacturers can say that. While that is not the end of the story when it comes to aerodynamics, it is important. Other factors such as how well a helmet matches to your head shape, and how well the helmet integrates with your position may be larger factors overall.
I am not saying that the Advantage2 will be the be all end all of aero helmets, to be honest I would be disappointed if there wasn’t something better in a couple of years. However, for a lot of riders, it will meet that balance for a lot of riders of a good fit, good quality, and a reasonable price compared to the competition.
The 07 and 08 are the same, right? They look like it. Talking about the Rocket here.
No. '07 Rocket has 4 vents. '08 Rocket has 7 vents (4 in the front, 3 in the top/rear).
Here is the 2008 model:
Weight: 14.8 oz/ 419 g Certifications: CPSC-ASTM-CEN NEW - Vents: 7 Comfortable Ergobuckles NEW - SpiderLock Elite rentention system for fine tuning your fit NEW - Sealed Airdry pads keep you comforatble and wick away the sweat Bag included
And the 2007 model:
Features include: Adjustable SpiderLock Elite for increased comfort Ergobuckle Sealed Airdry padding Weight - 419g 4 vents Carry bag Certifications include CPSC, ASTM, and CEN
In the pictures you posted, you can clearly see the top vents on the '07 model. I got the '07 model as it was advertised as having 7 vents. I guess it would be the '06 version with only 4 vents. I believe the '07 and '08 models have 7 vents. Here is the ad for the '07:
Louis Garneau Rocket Helmet - 2007
The Louis Garneau Rocket Helmet in its second year is still the most aerodynamic helmet in the Garneau lineup. The Rocket features a large fairing that almost rests on your back when in the optimal time trialing position. This creates a smooth transition for the air flowing over your helmet and on to your back. The result is you cutting through the wind like a hot knife through butter. With all this wind tunnel tested technology, the Rocket is also one of the safest aero helmets on the market with certifications from CPSC, ASTM, and CEN. You can race this helmet anywhere. Features: Weight: 14.8 oz/ 419 g Certifications: CPSC-ASTM-CEN NEW - Vents: 7 Comfortable Ergobuckles NEW - SpiderLock Elite rentention system for fine tuning your fit NEW - Sealed Airdry pads keep you comforatble and wick away the sweat Bag included
thanks for your earlier helmet review.
do you know if the giro Advantage 2 is sized basically like other giros?: i.e., if you know your size in a giro road helmet, like a pneumo, will it be basically be the same in the advantage 2?
thanks for your earlier helmet review.
do you know if the giro Advantage 2 is sized basically like other giros?: i.e., if you know your size in a giro road helmet, like a pneumo, will it be basically be the same in the advantage 2?
I would say go one size up. Though I have yet to get my hands on an 08 model. I had an 07 model from england. I ride with a medium Atmos, and I got a medium helmet. I could barley get it over my ears(the ear flaps were the issue). Once I worked it over my ears it fit good.
Just got back from my first ride with the a2. First thing is like some have mentioned it feels great on your head, just like a road helmet. Size medium feels identical to my size medium atmos. Secondly you wont feel it on your back and having used the rocket and spiuk kronos it was a little different. The ear flaps can be pulled to the side so putting it on in t1 should be easy as long as you pull the ear parts out. Another thing is you can hear more wind noise with the helmet. As far as ventilation, its definetely hotter than the rocket however it isnt unbearable. I’ll have to take it out on 90-100 degree ride to know for sure if id use it in an iron distance race(where you would be out in those temps) but for anything shorter i dont see any problem with the ventilation. It was probably mid 80s with very high humidity this morning, light to no wind for reference. I came back and put on the rocket and took it out for a quick ride and you definetely notice how much bigger the rocket is, you notice like someone else posted that air gets up under the front(which helps with cooling also im thinking) but you also notice how much more uncomfortable it is. I did at least. The bottom line is i’ll be sticking with the a2 assuming it isnt terrible in midday heat(90+) with high humidity, i dont foresee that being a problem though.
How is the Rocket uncomfortable? It doesn’t fit snug? Too heavy?
When I tighten up the helmet, it is extreemly tight on the back of my head where there is some rubber peices(rocket). I am going to be testing out an A2 tonight.
Also, one of the key advantages of the Advantage2 is that it tests the same in the wind tunnel with vents and without…
Hmmm…not according to this account from the MIT Tunnel (westwood velo visit). Then again, from what we’ve learned about the precision of the measurements coming out of that tunnel, maybe it does test the same 
i have accumulated a giro advantage (what i used all last year), a bell meteor from europe, LG Rocket and the new Spiuk. Low and behold, whil ethe spiuk was second fastest, the giro for me was much faster. my drag numbers looked to go from like 4.8ish down to like 4.6 at time. then we got it faster. we actually found with my back, the helmet off the back about 2inches was far faster. 4.5ish vs 4.8 lbs drag. then we got it faster. we took tape and taped up the opening in the back…boom, a bit more. we taped up the ‘vent’ holes which mark fully says has no ventilation value but just makes it look rocket fast. would be boring without vent holds. we tape up the back under the helmet where there is the cavity. we taped up the vent hols…bang, another .2. so from the spiuk baseline of like 4.8 (pretty good already) we got here down to like 4.3/4.4 with the giro tapes. awsome.