Originally Posted by
AngryScientist
ok i searched for "cogs" and got 18000 hits.
i got a new wheelset and my lbs stocks surly track cogs. for riding on the street is there any reason to look any further than the surly cogs? they look to be reasonably good quality, and have a good selection of cog sizes.
i assume these are fairly well liked, and that i'm not going to find anything thats VASTLY superior?
I don't use Surly cogs anymore, only Dura Ace for 16T and smaller and Soma for 17T and larger. Not only are the Surlys more expensive, I had one that was machined incorrectly such that the tooth spacing (pitch) was off and the chain would not mesh properly, resulting in a lot of noise and grinding. As soon as I replaced it with a Dura Ace, the problem completely vanished.
Look closely at the attached photo. The cog on the top is a 14T Suntour and the one on the bottom is a Surly. Notice how the troughs between the teeth on the Surly have a larger diameter, making the pitch larger since the circumference has increased. I have several other 14T cogs, and they are consistent with the Suntour shown in the photo.
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