What is the difference between a standard chainring and a “single speed chainring”?
Most chainrings currently being produced are designed with shifting in mind. These chainrings have ramps, profiled teeth & pins that aid in smoother and faster shifting. While these chainrings may be used on single speeds, a chainring without ramps & pins is recommended. So, is there such a thing as true single speed chainrings? Yes. There are companies specializing in single speed products who offer non-ramped/pinned chainrings. These aren’t the only chainring options available, however. Downhill & BMX chainrings are also designed for single-ring use. In addition, companies like as Sugino and Salsa produce non-ramped/pinned chainrings intended for use on geared bikes. All of these chainring options offer tall teeth that are not profiled. They will be more apt to keep the chain from derailing when the trail gets rough, and they are also a little more forgiving in regards to chainline. This isn’t to say that you can’t successfully use a “normal” (geared) chainring on your single speed.
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