Quiz: Color Changing

Quiz Friday! Sven bought a new helmet! He wanted it to match our team colours, but there was one tiny problem. Kira’s white helmet is no longer white due to long exposure to the sunlight. Kira’s helmet was purchased in Bolivia and at some point it turned yellow. Question: Please place your BETS on how long do you think it will take for Sven’s helmet to turn yellow and match Kira’s helmet!
Write your bets in the comments. The winner will get a personal kilometer as well as a place in our Hall of Fame (http://on.fb.me/1JAdFTC). The quiz ends on Monday (00:00 GMT). The winner will be announced when Sven’s helmet turns yellow. The winner will be drawn at random from all the correct entries.

Week 112: Pura Vida

Week 112. Pura Vida. Costa Rica has ‘Pura Vida’ written all over it: hotels are called pura vida, shops are called pura vida, soaps are called pura vida, wifi passwords are pura vida, boats are called pura vida, souvenirs have pura vida written on them and people greet each other with pura vida. What about us? Same old: two steps of pura vida, three steps back.

Quiz: Material Strenght

Quiz Friday! Here are some screws from Sven’s bike. They are responsible for holding the stand of Sven’s bike. It’s not a vital part of the bike, but it could be very usefull. It could, but Sven’s bike is heavy, so it doesn’t take long to bend the screws…
Question: How long did it take to bend these screws?
Hint 1: We didn’t bend them on purpose. Hint 2: This happened more than once.
Write your guess in the comments. The winner will get a personal kilometer as well as a place in our Hall of Fame (http://on.fb.me/1JAdFTC). The quiz ends on Monday (00:00 GMT). The winner will be announced on Tuesday(ish). The winner will be drawn at random from all the correct entries.