You might shout to get hikers out of the way or just blast right past them. But there’s also a politer way, a way that the next time he sees a mountain biker, he doesn’t poke a stick in your front wheel. I’m checking out six compact bells in a price range up to 15 euro’s and subject them to several tests, including loudness, impact and ease of use. So, let’s first take a look at the contenders.