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10 votes
5 answers
3k views

Infeasibility of a mechanical wind-up spring KERS (Kinetic Energy Recovery System) for bicycles

I'm curious about an explanation for why a wind-up spring KERS (Kinetic Energy Recovery System) isn't worth it for a bicycle. The system I have in mind is instead of braking the rear wheel you engage ...
Leeroy's user avatar
  • 483
6 votes
2 answers
5k views

Approximately where is the center of mass of a mountain bike?

Take a "standard" multipurpose bike like this one: http://www.islabikes.co.uk/bike_pages/beinn29.html (Weighing 12.2kg) I'm conducting a physics investigation, and for this I need to know the ...
DarkLightA's user avatar