The top portion of the inner EPS liner is composed of a softer density foam for immediate impact absorption. The outer portion of the EPS liner is made from a medium-density foam designed for protection at higher speed impacts. Shoei's dual-layer, multi-density EPS design. Shoei claims rotational energy is reduced by 15 percent in comparison to the previous VFX-W helmet. Up until this point, neither Shoei or Arai had utilized any internal slip-plane systems for reducing rotational forces. The most important consideration in determining correct fitment of a helmet is its internal shape.
For the purpose of this section, we will be speaking only to the American audience. Helmets are manufactured with either a long oval, round oval, or intermediate oval fitment. That being said, riders can fine-tune the fit of individual models. Arai provides a wide selection of interior liners and cheek pads in a variety of thicknesses. Additional adjustments can be made using micro-fit pads within the cheek-pad covers or by swapping liners between helmet models.
Shoei produces nearly all of their helmets for the American market with one internal shape: intermediate oval. While there are some small variations between the models, a Shoei helmet will usually fit 80 percent of the riding public perfectly. Shoei is not the ideal choice for those riders with heads that fall in the extremes of overly round or long oval.
Shoei also provides an array of varying internals. Shoei shell being cut and finished with a computerized laser. I trust both Shoei and Arai helmets among others to keep me safe in a variety of settings. But those are my opinions based on which helmet works best for my particular head shape, comfort tolerances, and preferred riding style. My advice is to focus on the features that are most important to you and the type of riding you are looking to tackle, consider the information above, and make an educated decision about which helmet is best for you.
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ZillaCash Gold. JavaScript Disabled. We have updated our Privacy Policy. Please click here to review the updates. Personally, I got tired of foam falling apart after a year of owning it. Gaskets that leaked, or rubber that started breaking down. Looking at a new helmet, I will have no hesitations in buying another Arai. More importantly, however, these helmets are engineered and tested to provide the ultimate protection in the event of a crash. Additionally, Arai believes that the best way to protect the head during an impact is with the design of a smooth, rounded shell.
This allows the helmet to glance off obstacles with less rotation force, meaning that your brain and neck will be less jarred during an impact. It reduces the risk of a concussion, whiplash, and other serious injuries.
These helmets are designed with the knowledge that real-world impacts can come from any direction, including the front. Arai tests every side, and the rounded shell shape is integral for successfully protecting your head. This Arai liner is very complex in its construction, which inevitably adds to the production cost.
But the construction of the liners can be vastly different in order to promote airflow, increase comfort and enhance durability; the Arai cheek pads and skull cap for instance are hugely complex compared to the budget lid.
Cheaper helmets tend to have a much simpler-to-make liner. How comfortable each is will depend on you. Does the liner make a difference to comfort? The cheek pad on the left is clearly easier — and hence cheaper — to make. Different designs might let you see more out of the bottom or top and a little extra to the sides, while some cheaper visors can occasionally distort a little at the extremities. Most lids now come with a Pinlock anti-fog visor insert, which can vary depending on the price — the Pinlock 30 is the minimum performance, 70 is the middle and is the best.
But not having a steamed-up visor is typically worth that imperceptible reduction in quality. Many helmets, from the cheapest to the most expensive, have a drop-down sun-shield. But Arai refuses to fit a drop-down shield as it believes it compromises on safety by creating a gap between the outer and inner shell, and introducing more holes for the operating mechanism.
Ironically, Arai could probably sell a lot more helmets by introducing them. Just carry a clear visor with you if you want to use a dark visor, and use common sense. Visors are made of polycarbonate or acrylic and need to be extremely strong — you can typically bend them inside out without harming them. But you must be careful with what you use to clean a visor as some cleaning products even a few sold for visors can seriously damage the plastic, making it brittle.
You might not know until you need to use it, but it can show up quickly on some — a few HJCs for instance have a catch screwed in that creates a stress point for the degradation to show itself much more quickly.
A good quality lid will have effective vents that cool your head; important to keep your concentration up. Exhaust ports can help draw the air away, and you need to be able to use the vents easily with gloves on. Any holes cut in the outer and inner shell will reduce the structural integrity, so the shell must be strong enough to at least pass ECE A well-designed lid can be extremely strong while also giving plenty of intake and exhaust ports.
You might find channels cut into the inner liner, which can help improve airflow, but as explained earlier, they can also be used to alter the effective density of the polystyrene during impact testing.
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