Liz Stinson looks at Austrailian bike accessory maker Knog’s new Oi bike bell for WIRED:
"To create the pure ding that Knog was after, the designers tested nearly 200 prototypes of different shapes and metals. “We wanted something that was a little more harmonic,” he says. Aluminum and titanium produced the purest ring (the bells also come plated in brass and copper), and the designers found that the curvature of the metal ring had to extend beyond 180 degrees in order to make a sound that was loud enough to hear. “The loudest bell would be so big you couldn’t put it on your handlebars,” he explains."
A noble effort. Not only did Knog have to find a material and shape that was durable and looked great, it also needed to sound great, a problem unique to a product like a bike bell.
"Given that many cities and states in the US require cyclists to use a bell or horn—and Australia passed a similar law just law week—bells aren’t an optional high-design accessory, but a necessity. And lest you think Knog had anything to do with Australia’s new law—and the $300 fine for anyone who violates it—Davidson insists 'It’s great for us, but it was purely coincidental.' "
More power to ‘em.