Arai Quantum II Airflow Spoiler? where the...? - Wrist Twisters
 
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post #1 of 10 Old 03-24-2008, 09:07 PM Thread Starter
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Arai Quantum II Airflow Spoiler? where the...?

Hey folks,

I got my Arai Quantum II recently. I special-ordered an XL in Black Frost and the dealer received an XXL. At first, I was bothered, but I tried it on anyway. It fit comfortably. It wasn't too tight, and it didn't make me feel like a bobble head, so I happily took it. I didn't ride until dusk, but it looks like the Black Frost matches the Asphalt paint pretty well.

One thing I noticed on a sticker in the helmet, as well as the manual, was an "Airflow Spoiler." I have no idea where it's located. Does the Quantum II even have one? I can't figure it out. Help!

Thanks

Michael Reyes

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post #2 of 10 Old 03-25-2008, 05:20 AM
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Quote:
Originally Posted by mikochu View Post
Hey folks,

I got my Arai Quantum II recently. I special-ordered an XL in Black Frost and the dealer received an XXL. At first, I was bothered, but I tried it on anyway. It fit comfortably. It wasn't too tight, and it didn't make me feel like a bobble head, so I happily took it. I didn't ride until dusk, but it looks like the Black Frost matches the Asphalt paint pretty well.

One thing I noticed on a sticker in the helmet, as well as the manual, was an "Airflow Spoiler." I have no idea where it's located. Does the Quantum II even have one? I can't figure it out. Help!

Thanks
I have a Quantum II Hacking, mine didn't come with a spoiler either.

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post #3 of 10 Old 03-25-2008, 06:06 AM
 
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Somtimes they call the spoiler the vents on the rear of the helmet - Or in some cases , Ive seen the vents in the front called a spolier - But, Im pretty sure the Quantums dont have the cool chin drop down thing, if thats what yoiur talking about. The old Quantum C/D/E did, but when they went to the Quantum II , it was dropped.

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post #4 of 10 Old 03-25-2008, 06:19 AM Thread Starter
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Boo. The airflow spoiler wasn't a selling point for me. I didn't even know about it. Though, my neck would have appreciated the dampening of the air flowing through my beard. My beard feels like a thousand little pymies whipping at my throat.

Thanks guys!

Michael Reyes

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post #5 of 10 Old 03-25-2008, 10:45 AM Thread Starter
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Interesting...they still advertise the Quantum II having the spoiler...I'll have to shoot them an email.

Michael Reyes

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post #6 of 10 Old 03-25-2008, 11:07 AM
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I think you're misunderstanding the definition of a spoiler.

In regards to a smooth surface that air flows across in a straight and smooth direction. Take a car hood for example. If the hood is smooth and without flaw, air will flow easily and quickly from one side to the other.

Now, if you add a raised ridge or bump, the air flowing in the same direction will be spoiled. It creates a low pressure area behind the raised section and, in the case of helmet technology, can be used as a vacuum to pull hot air out of the EPS liner, and reduce some of the wind buffeting when the rider turns his/her head at speed.

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post #7 of 10 Old 03-25-2008, 11:11 AM Thread Starter
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Yeah, I understand that. There's a fabric under spoiler-esque on the chin guard. It's just everything states the airflow spoiler can be adjusted and pulled down. *shrug*

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post #8 of 10 Old 03-25-2008, 11:15 AM
 
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yep that's the chin curtain that drops down below your mouth

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post #9 of 10 Old 03-25-2008, 11:39 AM Thread Starter
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I just talked to a coworker who has an older Arai Astra and he said the "chin curtain" is part of the spoiler and that I should be able to pull it down. I'll check it out later today.

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post #10 of 10 Old 03-26-2008, 08:39 AM Thread Starter
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So...I figured it out. The Quantum II does have a airflow spoiler. You have to tug on the chin curtain a little (yikes!) and it'll come down a few clicks. I can see the fabric wearing out because there's not really a lip to help pull the plastic down. Thanks guys!

Michael Reyes

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