Join Date: Apr 2010
Location: Sunnyvale, CA USA
Mentioned: 1 Post(s)
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Quoted: 79 Post(s)
Originally Posted by IthaDan
Get a clamp on cable pulley (problem solvers has one) to run a bottom pull FD with top tube routing.
The original poster does not want a mountain derailleur regardless of where its cable runs unless he's running a mountain bike crankset with its intended bottom bracket length.
Front derailleurs work best around the chain line they were designed for. Road doubles run 43.5mm, road triples 45mm, and mountain bikes 47.5-50mm.
The cage configuration for doubles and triples is different too.
I tried a Campagnolo Racing-T road triple front derailleur which had run perfectly with a 50-40-30 road triple when I switched to a 50-34 compact double and couldn't configure it to reliably shift with the rear derailleur in all positions without periodically dropping the chain.
Setting up the appropriate double derailleur was painless.
Last edited by Drew Eckhardt; 07-12-12 at 01:24 PM.