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Recreational Cyclocross and Gravelbiking This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like :The Dirty Kanza". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

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Old 05-20-10, 12:28 PM   #1
sprocket47
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cyclocross frame derailleur question

I'm building up a cyclocross frame and beginning with my touring bike parts and I'll upgrade from there. The cyclocross frame I have requires a top pull front derailleur and I'm having a hard time find one in a road bike model. Do most cyclocross use mtb front derailleurs? I have triple rings and tiagra shifters. Will a top swing XT front derailleur work with these shifters? What other options do people use for top swing/pull front derailleurs?
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Old 05-20-10, 12:39 PM   #2
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I've got a 29er that I put drop bars on, and I'm using Tiagra shifters with an XT front derailleur, though I've got it set up for bottom pull. It actually works pretty well for me. When I have it in the stand, the chain rubs the derailleur a bit at the two extremes -- i.e. small chain ring with the big cog and the big ring with the small cog (yes, the pairings that are supposed to work) -- but I don't noticed it on the road. The top pull cable routing might complicate things.

If you try this, I would definitely recommend getting some kind of inline barrel adjuster because you have to have the cable tension just right.

Double front rings would solve the problem, as would bar end shifters in friction mode. There's also an adapter you can buy (from JTek, I think) to get the road shifters to pull the amount of cable that a MTB derailleur expects.
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Old 05-24-10, 02:19 AM   #3
larryp7639
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Hello !
I am also a new member. Would a newcomer be warmly welcome here? Good day you guy !
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Old 05-24-10, 05:48 AM   #4
barturtle
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What frame are you using?
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Old 05-24-10, 10:06 AM   #5
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I'm assuming you need something like this.
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