Surly Crosscheck double chainring question
08-26-08, 07:47 PM
#1
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Surly Crosscheck double chainring question
A friend of mine is thinking about buying a Crosscheck, which he wants to use for commuting and light touring and fitness riding. (Good choice methinks!)
But the bike's got a double up front. How tricky is it to add a third (small) chainring? Would he need a new crankset?
Thanks for your help!
But the bike's got a double up front. How tricky is it to add a third (small) chainring? Would he need a new crankset?
Thanks for your help!
08-26-08, 08:07 PM
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If the cranks are only doubles i would think that he will have to get a triple crankset.
08-26-08, 09:04 PM
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Generally a new crank and BB along with a new rear derailer are needed for the conversion. This is assuming that the left shifter is set up for it. You may want to look at a cassette with a wider range (may also need a new RD) or a compact crank (110 BCD).
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I'm not one for fawning over bicycles, but I do believe that our bikes communicate with us, and what this bike is saying is, "You're an idiot." BikeSnobNYC
08-26-08, 10:00 PM
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The shifters are bar end shifters, and I believe that they are set up to work with triple and double chainrings. (But I'm not positive.)
So, I think that while he'll need a new crank, he will get by with the same bar end shifters.
As for the cassette, I have no idea what is on the bike he's proposing to buy...
Thanks very much!
So, I think that while he'll need a new crank, he will get by with the same bar end shifters.
As for the cassette, I have no idea what is on the bike he's proposing to buy...
Thanks very much!
08-27-08, 01:30 AM
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The stock crank is a triple without the inside ring. He will just need a wider bottom bracket and the appropriate small chainring. The stock rings are 36/48, so the gearing is lower than a regular road bike to begin with. The rear derailer will work fine with an 11-32 mountain cassette if he chooses to go that route instead. I have two wheelsets for mine, one with an 11-32 cassette and 45mm knobbies for mountain bike trails and one with the stock cassette and 28mm slicks for road rides. I can swap between the two without adjusting a thing.
Last edited by c_m_shooter; 08-27-08 at 01:34 AM.
08-27-08, 11:48 AM
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The stock crank is a triple without the inside ring. He will just need a wider bottom bracket and the appropriate small chainring. The stock rings are 36/48, so the gearing is lower than a regular road bike to begin with. The rear derailer will work fine with an 11-32 mountain cassette if he chooses to go that route instead. I have two wheelsets for mine, one with an 11-32 cassette and 45mm knobbies for mountain bike trails and one with the stock cassette and 28mm slicks for road rides. I can swap between the two without adjusting a thing.
