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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 01-31-09, 02:40 PM   #1
jsource
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42t vs larger chainring

Hey all,

I bought a sugino messenger crankset, but the chainring is 42t (bought it off of a brand new specialized singlecross). I know all I have to do is get the correct cog, but I was wondering, are there any advantages of having a bigger chainring and cog even though they carry the same ratio as my smaller setup?

Thanks

J
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Old 01-31-09, 02:44 PM   #2
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less wear on your components = longer lifespan.
With a smaller chainring, you get more effect from changing the number of teeth in the back though.
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Old 01-31-09, 02:47 PM   #3
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a larger chainring would let you run higher gears because cogs only go down to like 12 or 13 teeth, i think.
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Old 01-31-09, 03:48 PM   #4
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Larger chainring = looks better and that's really all that matters. j/k

I had a 42t messenger and it was great. I ran a fixed/fixed hub with 14t/15t and really worked good.
I got a DA track crank for a good deal so now its 49t and 17t.

There's tons of threads on this exact subject. As usual...search.
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Old 01-31-09, 05:19 PM   #5
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Some people claim the larger spins better, but the smaller accelerates harder...Believe what you will...
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Old 01-31-09, 05:48 PM   #6
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I think you should keep the 42 teeth until/unless you're looking to get a gearing that you can't accomplish with that number of teeth up front.
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Old 01-31-09, 05:50 PM   #7
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Some people claim the larger spins better, but the smaller accelerates harder...Believe what you will...
Yeah but this is complete crap.

OP, you'll be fine with 42. Personally I wouldn't think it was worth it to swap chainrings unless you can get something for cheap or free.
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Old 01-31-09, 05:53 PM   #8
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yeah but this is complete crap.

Op, you'll be fine with 42. Personally i wouldn't think it was worth it to swap chainrings unless you can get something for cheap or free.
+1.
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Old 01-31-09, 08:27 PM   #9
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i don't like threads like this, but i've heard from a number of sources that everything else the same, smaller rings are louder than bigger rings.

cannot tell you true it is, but a few people have said it. "a few people" say lots of stuff that ends up being bs though, so take it with a grain of salt.
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Old 01-31-09, 08:31 PM   #10
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i don't like threads like this, but i've heard from a number of sources that everything else the same, smaller rings are louder than bigger rings.

cannot tell you true it is, but a few people have said it. "a few people" say lots of stuff that ends up being bs though, so take it with a grain of salt.
Could make sense as the chain links have to bend at a greater angle coming around the sprocket and chain ring...
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Old 02-01-09, 12:36 PM   #11
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You could buy a bunch of chains for what it would cost to get a new chainring and cog (oh and a new chain if you don't have extra links). If you want to replace it, do it when the one you have is getting worn out, or when you decide you don't like how it looks.

The advantage of what you have is that you can get a lowish gearing with less expensive Dura Ace cogs. Why DA cogs cost less than the larger Surly ones is a mystery of the universe, but you can take advantage of it with your current setup.
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Old 02-01-09, 01:09 PM   #12
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The advantage of what you have is that you can get a lowish gearing with less expensive Dura Ace cogs. Why DA cogs cost less than the larger Surly ones is a mystery of the universe, but you can take advantage of it with your current setup.
You might mean get higher gearing with less expensive DA cogs, doesn't matter. Point is DA cogs do not come bigger than 16t.
That's why I have a 17t Surly and it did cost $30. That's about the same cost as an EAI cog which is allegedly better quality but it was out of stock everywhere at the time.
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Old 02-01-09, 02:17 PM   #13
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thanks for clearing that up.
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