If the scuffs were on the top then I'd say no way I'd wear it, street or track. On the chin and the obvious minor scuffs, I wouldn't have a second thought. Maybe bring it with you to the next race and ask the folks in the tower of power?
Man, you guys must be swimming in money to replace a helmet for a few minor scuffs. If it barely scuffs the paint off, let alone dig through the poly i can't imagine any kind of impact being imparted, unless i just am missing what the hell is in the picture.
Totally depends on how ya fall. My dad was doing about 35 when he crashed my little brothers gsxr. He is no longer with us. RIP Dad.
Idk about your brand but you can send back your helmet to Arai to get “inspected”. My paint chips failed inspection.
If you drop a 5 pound ball 5 ft onto a stationary scale and note the force measured by the scale, and then drop the same ball at 100 mph forward speed onto a scale, the force measured by the scale will be exactly the same is what he's saying. So, you're only correct if you're placing the scale in direct line with the forward direction of the ball.
Exactly. There are so many factors in a crash, like you stated as an example. Angle of impact, almost as important cog of the person at impact, the list goes on and on. We do all kinds of this stuff during crash investigations so I can say the small things I stated are a very small part of the larger picture. The one that will shock most is the surface friction at impact as I don’t think there’s ever been a crash that’s 100% vertical.
This was all debunked by the Hurst report maybe 30 years ago. Unless you run into a perpendicular object like a curb, most of the impact is caused by the vertical impact with the road. That's why falling off a bicycle is as dangerous as a MC. The way to think of it is...picture standing up, tying your hands behind your back and falling forward onto your head. He (Dr. Hurst) didn't evaluate rotational damage so you also need to consider that.
He's not wrong because the physics don't change and horizontal momentum has nothing to do with vertical momentum when tumbling. They can work together against you sure but they can also be doing totally different things at the same time. A highside and landing on your head won't be any more of an impact doing 100 than flying over a car and landing on your head at 20, it is the mass of you and the acceleration of gravity (dissipated some by your horizontal motion).