Originally Posted by multisport
Okay, what is a dorkdisk? And why is it so? Still kind of new to some of the biking terminology and vernacular, so I need to buy a vowel on this one.
The transparent plastic disc some bikes come with to keep the chain from wrapping around the spokes if it should come off. They really serve no purpose because a properly adjusted derailleur will prevent shifting into the spokes, and a broken chain is capable of going pretty much anywhere it wants to go, regardless of what you may have behind the cassette.