Join Date: Apr 2010
Location: Sunnyvale, CA USA
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Originally Posted by cycle_maven
4. Front derailleur- you may want to change to a double type- it will probably shift better. But the triple type will still work.
My experience differs.
When I swapped my Campagnolo Racing-T triple crank for an FSA carbon pro compact crank I could not adjust the front triple derailleur to both shift reliably to the big ring and not throw the chain. Swapping for a Campagnolo Chorus CT front derailleur designed for a compact crank fixed the problem.
The triple derailleur had a worn inner plate. A lower mileage part which had lost less profiling may have worked better.
The old crank and derailleur were of 8 speed vintage and chain Campagnolo 9. A derailleur designed for a 9-speed chain width/ring spacing might have worked reliably.
Unless you're loosing races by a fraction of a second (a whole five pounds is worth only 6 seconds on a 20 minute 7% climb and we're talking .5 pounds difference between an aluminum triple and carbon compact double) there isn't a good reason to trade your triple for a double. For the same high and low gears the triple will give you tighter spacing in your cruising range, you'll have more overlap between rings so you'll shift less up front, and there can be a smaller difference between ring diameter so it shifts better.
Doubles do look nicer.
Last edited by Drew Eckhardt; 05-13-10 at 04:15 PM.