Schuberth J1, reveiwed...
I got my J1 a couple of weeks ago, haven't seen anyone comment on them so here goes:
Fit is like the new Schuberths, I got one size bigger than my old Schuberths, and it fits the same. The chin bar is in fact some sort of plastic, but is a very stiff piece of goods. It releases from the helmet with a catch on each side. The directions suggest removing it to don and doff the helmet, but that is too fiddley for me. When installed, the chin bar stiffens the helmet '"ears" significantly. Without it you can stretch it over your ears like any ordinary open-face. With it, there is no give at all, so it scrapes your ears like a full-face. But you can just slam it on, no extra step of opening the clam like the C2. The Schuberth Profil was by far the best helmet to get on and off - 2 seconds either way including fastening the chin strap - but alas they are no longer made. The new Schuberth S1 is the other extreme, sort of like re-enacting birth.
Once inside the J1, the peripheral vision is superb. The brow is barely visible, the edges left and right just visible, the chin bar can only be seen by looking down slightly and concentrating on your down peripheral vision. if I look down hard, I can't see it at all.
The visor shuts tight, leaving just a waft of air coming under the chin bar at speed. It has a number of indents, the first keeping it just open with airflow more like a traditional open-faced, full shield helmet. There are thumb tabs to operate the visor. The indent fully closed is quite aggressive and takes some effort to overcome, both closing and opening. Maybe it will loosen with use.
The sun visor works OK. I prefer the straight across cut of the C2 (which I understand fits in the J1). The lower edge is high enough to be able to see the GPS underneath. If I slam the operating lever down, the visor overtravels on the right side, and then catches underneath the shell. Then to raise it I have to push it back in under the shell. If I am a bit more deliberate putting it down, no problems. I will look for adjustments on the stops.
The top vent works OK, not outstanding, but does draw some air up over your head.
On the road, I really like this helmet. it is noticeably quieter than the C2 while on the KLT. The C2 has a Jeckyl & Hyde character: On an unfaired bike it is the quietest helmet I have ever worn, but on the KLT Mr. Hyde comes out and it is noisier than most. Something about the aero-acoustics does not like the windscreen turbulence. The J1 though, seems as quiet tucked right up behind the windscreen as it does in the normal riding position. With the windscreen down, there is more noise, but as good as any helmet I own, including the full face ones.
This is now my preferred helmet on the KLT. On the unfaired bikes, the C2 is a bit quieter (and warmer in the cold) but the J1 isn't a bad choice either.