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4

Short answer: they're not required to. According to http://www.spkids.com/pages/astm-helmet-safety-standards-explained this standard consists of these tests: Dropped from two meters on flat anvil (iron block); drops from curbstone and hemispheric anvils placed higher than bicycle helmet testing Three anvils mimic various mountain bike terrains for ...


2

Another point to consider - confidence. I had a washout on a road, which lead to a slide on a downhill ~4 months ago, which ended up off the road and down a hill. I am now much more leery of turns at speed, to the point I brake down to a slow speed and coast through any leaning part of the curve, only applying pedals again when exiting the corner. So, ...


5

It's really simple, gravity/weight moves you forward, and drag/friction keeps you from going fast. He can't do much about the weight difference, short of drinking more beer or getting a heavier bike. But drag and friction is a different story. There are many things slowing you and your buddy down, the largest factor being wind resistance. Wind resistance ...


0

Apart from setting up his suspension and his tyre pressure (around 27-29psi if talking about downhill bikes, tubes and tyres), he can't do much... It's all about his skills. He can only practice. Bikes don't make riders. Lack of brains does (always with the good meaning 😀). I have found myself riding faster than guys with serious downhill bikes, on a 120mm ...



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