Hm. I may buy one. I have a Bell Javelin, and what I found when I started researching is that everyone seemed to start with "when the Javelin came out it was good, but now it's pretty slow, so we're going to compare all the fast helmets with the slow Javelin".
I was worried about doing the "tail air brake" thing but it seems that I'm good at not sticking the tail up. So maybe the Javelin isn't bad. But I have no data, and I hope to have a day at a track where I can do some Chung kind of laps. I'd like to try a couple different helmets, and the Carnac Kronus was one of the helmets I wanted to try.
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"...during the Lance years, being fit became the No. 1 thing. Totally the only thing. It’s a big part of what we do, but fitness is not the only thing. There’s skills, there’s tactics … there’s all kinds of stuff..." Tim Johnson