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1
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0answers
341 views

Is Ryder Hesjedal's bike motorized? Is this 'motorised doping'? [closed]

After pro cyclist Ryder Hesjedal crashed on stage 7 of the 2014 Vuelta a EspaƱa, something odd seemed to occur with his bike: the wheels kept spinning. See the video here. Now the cycling media is ...
10
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2answers
465 views

Is it safer for bicyclists to be allowed to roll through stop signs?

The Idaho Stop rule for bicycles (Idaho Code 49-720) allows bicyclists to treat stop signs as yield signs. Its practical application is described in this video. A study by Jason Meggs if often cited ...
11
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1answer
691 views

Are you more likely to suffer a head injury walking than cycling?

An Olympic cyclist, Chris Boardman, recently made the claim that people are more likely to suffer a head injury walking, rather than cycling. [...] cycling is safe. You would have to wear a helmet ...
13
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1answer
1k views

Did Lance Armstrong use EPO?

Lance Armstrong has recently been "stripped" of his Tour de France titles by the USADA. They state, among other allegations: (1) Use and/or attempted use of prohibited substances and/or methods ...
18
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1answer
4k views

Can science explain how bicycles work?

From 8 Simple Questions You Won't Believe Science Can't Answer: Bicycles have to designed by almost entirely by intuition and experimentation Physical concepts used to explain them (gyroscopic and ...
16
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1answer
4k views

If I drop my cycle helmet, do I need to buy a new one?

In conversation with my housemate last night he said that if a cycle helmet is dropped, even from a height of a meter or so, onto a hard surface then it needs to be replaced. He said the internal ...
21
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4answers
4k views

Are slick bicycle tires more slippery in the wet?

I always assumed slick (tread-less) tires were more prone to loss of traction in the wet. That is until I read this answer on the bicycles SE which claims that bicycle tires are too thin, round and ...
43
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4answers
3k views

Is cycling worse for the environment than driving to work if you need to take a shower?

I had an argument with a work colleague. He claims that me cycling to and from work is less environmentally friendly than driving because I will eat more as a result of expending more energy. I ...
14
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2answers
3k views

Does riding a bicycle reduce sperm count/male fertility?

Related Does using a laptop on your lap lower your sperm count? Can switching from briefs to boxer shorts improve your fertility? I've heard that riding a bicycle, especially for extended ...
26
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3answers
1k views

Do cars pass with less space for bicyclists who wear helmets?

This question is an off-shoot of from the discussion about helmet safety. There is an assertion that when a car passes a bicycle, it allows less space to those who wear a helmet than those without. ...
57
votes
3answers
4k views

Does wearing a bicycle helmet make the cyclist safer?

Does wearing a helmet while bicycling make an individual cyclist safer? That is, in the case of an accident, is one safer wearing an helmet? If yes, are the odds of an accident lower, higher or ...
8
votes
2answers
872 views

Do most professional bicycle racers take performance enhancing drugs?

I have heard the claim that it is almost impossible to succeed as a professional bicycle racer without taking drugs because everyone else is taking it. Is it true?