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giro air attack helmet
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18-04-2013 1:02pm#1
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they do seem to be a bit marmite - people seem to love the looks or hate the looks, but apart from the looks (which I like - i think they look quite smart
) anyone any actual experience with them. They look like they could be a quite comfortable, forget your wearing it kind of helmet which would be nice 0 -
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Personally I like the look of it but that's probably mostly because its rounded shape is arguably better in a crash due to being less prone to catching on things. On pure aesthetics it mightn't convince me, but I see it in a better light by perceiving it to be possibly "safer" (but whether that perception is justified is a whole other matter though).
On the purely technical merits of it, I read up a little on it recently and it seems like a curious mix. Giro mention that it can be used in TT's due to having better aerodynamics than a regular road/non-TT helmet but they seemed to shy away from actually recommending it for that purpose. I gather that it falls short of the benefits of a true TT helmet, which is hardly a surprise I guess. To achieve its improved aerodynamic performance versus a road helmet they closed off vents.To compensate for that they designed a new "harness" (don't recall their terminology offhand) which keeps the shell suspended a little more above the head to aid in cooling your head. I do wonder how it performs in terms of cooling, and I also wonder how comfortable it feels just generally with that different design.
Phillipe Gilbert wore one during one of the recent early season races, and if it's good enough for him... He didn't win though 0 -
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Harrybelafonte wrote: »If you like it get it. You change your mind? You can always get the visor and wear it on track, it'll make me less self concious when I'm wearing my new:
did you get it? nice! You should wear it on Saturday 0 -
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Harrybelafonte wrote: »Jesus no, trying too hard and all that. Serious stuff like Nationals only.
dont mind the begrudgers!! LOL
anyway - this guy claims its the bees knees with free speed and fore/aft adjustability (but he works for giro)
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Ah feck it, I'm getting one. And to make matters worse, Im gonna get the shield, with extra fredage!! Evans currently seem to be best priced, no where has them in stock tho. The non shield version is in stock in some places.
yeeha!!
(Ill use it for the road, track and TTs)0 -
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so, ive bee using this helmet for about a month now, I thought Id write a review.
Comfort
This is by far the most comfortable helmet I've worn on a bike. The helmet is suspended on your head rather than sitting on your head, and feels more 'floaty' than my other giro helmet. It doesnt feel as helmety as other helmets. if you get a chance to try one on, try it. Its 330g claimed. I havent weighed it yet.
heat/cooling
I havent noticed any real difference between my previous helmets with lots of cooling holes and the air attack. Ive been using it in the recent heat and havent had any problems. I will try my older giro tomorrow for a spin and see if it is noticeably different, but I dont really think it is. If I havent noticed it by now with the recent weather I dont think I will notice it with a different helmet.
Noise
It is noisier than previous helmets, there is a good bit more wind noise when cycling along. This is probably the worst part of the helmet, and can be a nuisance at times. Mostly tho, its fine.
Protection
I havent had to test this out yet, thankfully, but it feels like a good quality helmet. I know thats subjective, but I have no other way of measuring it. No pointy bits mean less things to catch in the event of a crash. Again thats subjective
Looks
Love it or hate it styling. I love it. I have had some slagging about it but they are all jealous. I havent used the visor yet, but when I do, I expect my awesomeness to go off the scale!!
aerodynamics
Apparently its worth up to 15 watts, which is good. I cant say if its made any difference or not to me, but the first time I commuted while wearing it i set a PB......
Overall I am very happy with the air attack. I like it, it is functional, extremely comfortable. I would recomend one for the comfort alone. I use it for road, track and will use it for the very occasional TT. I'm not sure if I will use it for CX, ill probably revert to my old helmet for that.
It looses marks for the wind noise, which, while not a major issue, can make it sound like your battling a hurricane force head wind at times, so, 8.5 out of 10 for the helmet. One thing tho, make sure you are thick skinned. People WILL slag you 0 -
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so, ive bee using this helmet for about a month now, I thought Id write a review.
Comfort
This is by far the most comfortable helmet I've worn on a bike. The helmet is suspended on your head rather than sitting on your head, and feels more 'floaty' than my other giro helmet. It doesnt feel as helmety as other helmets. if you get a chance to try one on, try it. Its 330g claimed. I havent weighed it yet.
heat/cooling
I havent noticed any real difference between my previous helmets with lots of cooling holes and the air attack. Ive been using it in the recent heat and havent had any problems. I will try my older giro tomorrow for a spin and see if it is noticeably different, but I dont really think it is. If I havent noticed it by now with the recent weather I dont think I will notice it with a different helmet.
Noise
It is noisier than previous helmets, there is a good bit more wind noise when cycling along. This is probably the worst part of the helmet, and can be a nuisance at times. Mostly tho, its fine.
Protection
I havent had to test this out yet, thankfully, but it feels like a good quality helmet. I know thats subjective, but I have no other way of measuring it. No pointy bits mean less things to catch in the event of a crash. Again thats subjective
Looks
Love it or hate it styling. I love it. I have had some slagging about it but they are all jealous. I havent used the visor yet, but when I do, I expect my awesomeness to go off the scale!!
aerodynamics
Apparently its worth up to 15 watts, which is good. I cant say if its made any difference or not to me, but the first time I commuted while wearing it i set a PB......
Overall I am very happy with the air attack. I like it, it is functional, extremely comfortable. I would recomend one for the comfort alone. I use it for road, track and will use it for the very occasional TT. I'm not sure if I will use it for CX, ill probably revert to my old helmet for that.
It looses marks for the wind noise, which, while not a major issue, can make it sound like your battling a hurricane force head wind at times, so, 8.5 out of 10 for the helmet. One thing tho, make sure you are thick skinned. People WILL slag you
I am tempted to get one for two reasons:
1. Goddam bugs - last night was the clincher for me. If felt I was cycling in the rain, a rain of flies. Had to stop several times to take off the helmet and get the creepy-crawlies off my head.
2. I am training for an Iro..., I mean a 180k TT, and the visor will make for easier and more comfortable visibility compared to glasses on those 4-5 hours TT bike rides, as I'm not going to wear my TT helmet when training.
I would wear my normal road helmet on other rides though, unless road racing.
Where are the current best deals?0 -
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120kph, obviously
I based that 15 watts thing on watt (haha) i heard on eurosport. Probably not the most scientific of methods.
Aero power losses increase with the cube of airspeed, so you'd need to be going at 40*(15/5)^(1/3)=58kph without drafting to get a 15W advantage.
At that speed you'll be putting out something like 800W, so the 15W might be worth almost 2%.
Marginal gains man, marginal gains!0 -
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Aero power losses increase with the cube of airspeed, so you'd need to be going at 40*(15/5)^(1/3)=58kph without drafting to get a 15W advantage.
At that speed you'll be putting out something like 800W, so the 15W might be worth almost 2%.
Marginal gains man, marginal gains!
I knew when I posted that you would do the maths
That 2% with the 2% from aero wheels at 50 kph (or whatever it is, should (in theory) give me a couple of extra kph in a sprint. I was beaten to second place in a photo finish on the line, if I had had aero wheels and stuff I like to think I would have won. (At least now I cant blame lack of them on not winning, plus they are shiny, and bike + shiny things = good)
In fairness, I have been using the air attack at the track where 2% can be a big difference.0 -
I knew when I posted that you would do the maths
That 2% with the 2% from aero wheels at 50 kph (or whatever it is, should (in theory) give me a couple of extra kph in a sprint. I was beaten to second place in a photo finish on the line, if I had had aero wheels and stuff I like to think I would have won. (At least now I cant blame lack of them on not winning, plus they are shiny, and bike + shiny things = good)
In fairness, I have been using the air attack at the track where 2% can be a big difference.
Cervelo have a document showing that an aero frame would give about a 1 meter advantage for a sprint starting about 200m out. Cav-type speeds mind you, not your puny 50kph.0 -
Cervelo have a document showing that an aero frame would give about a 1 meter advantage for a sprint starting about 200m out. Cav-type speeds mind you, not your puny 50kph.
i was pipped for a win by about 3 inches. Ill happily take that metre
I read that the aero frame is one of the least bang for bucks when it comes to reducing drag and increasing speed in the whole aero-is-faster scheme of things.0 -
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I've seen some in Joe Daly's as well. Quite intrigued by these sort of helmets myself. Can't decide between the ait attack and the evade.
Seen a few lads sporting the Air Attack recently, I have been converted. A quick google image search of both shows David Millar looks much cooler in the Giro then Cav does in the S-Works. Case closed 0 -
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