
Originally Posted by
RogerWilco
I have always worn Shoei helmets. In the X-11/12, I take a medium size but there is a bit too room on the sides of my head. A size small was just too tight everywhere and I would get a headache in about two minutes. Even with the medium size there was an extended break-in required, but it finally got comfortable.
When I tried the Signet-Q, I discovered that my proper size in this helmet is a small. The shell is actually a bit smaller than the Shoei in size medium. The Arai in size small is in very light contact with the sides of my head and I still have enough room front-to-back, thanks to the long oval shape of the helmet. With the Shoei, I had to go to a size medium in order to get enough front-to-back room, with the sides being a bit to big. The Arai has been comfortable from day one. I can wear it for long hours with no discomfort. It seems only a little, if any, louder than the Shoei.
One can replace a Shoei face shield very quickly and easily. It is a good design which I like a lot. Changing the Arai shields can be kind of intimidating: there are even videos attempting to explain how this is done. Knowing that the world needs instruction videos for a "simple" shield change did not make me feel all warm and fuzzy. However, with about three minutes practice ("Oh, THIS is how it's done!) it becomes very fast.
The fit of the Signet-Q, along with it's shape, caused me to realize the Shoei helmets were actually torquing my head when performing a head check. Since the Shoei had extra room on the sides of my head, the wind would spin it around farther than I wanted to rotate, when checking for traffic. It wasn't a huge amount, just a bit uncomfortable. I was never aware of what caused this discomfort until I used the Arai helmet, which is rock solid. There is much less stress on my neck because the helmet just stays at whatever angle my head is.
I'm sold on the Signet-Q to the extent that I'm going to buy another one.
These are my observations. I hope this helps.