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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 06-15-07, 09:18 PM   #1
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Chainrings/sprockets, big or small?

I'm currently riding a biopace 42T chainring and a 16T DA sprocket. I like the ratio as a nice "spin" gear but would also like a low-cadence "big" gear. I do have a fixed/fixed hub, so I'm good to go in that regards.

I just threw my chain and have decided to ditch the biopace, so the only thing I'm keeping is the 16T cog. I can go with either a 47T chainring and 16/18 rear sprockets or 42T chainring and 14/16 sprockets.

Is there any advantage of going one way over the other? The only thing I can figure out is that the 42T chainring option will allow me to get a second DA cog.
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Old 06-15-07, 09:25 PM   #2
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if you go with the bigger gearing. you use more metal, thus killing more penguins and seals making you a jacka ss. If you go with a smaller gearing, using less metal Al Gore may give you a handjob.
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Old 06-15-07, 09:56 PM   #3
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a smaller ring will let you get a bigger ratio difference between cog changes. but bigger rings/cogs will last a tad longer, possibly a bit less friction too.

edit: i'd just go with whichever will be cheaper. it wont matter much one way or the other.
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Old 06-15-07, 11:03 PM   #4
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I don't think it'll matter much. I did a similar thing, but increased my chainring up one tooth and decreased the cog one tooth, from 42x16 (69 g.i.) to 43x15 (75g.i.). I'll probably go back to 69 for the winter.
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