Low car diet
Join Date: Aug 2007
Location: Corvallis, OR, USA
Bikes: 2006 Windsor Dover w/105, 2007 GT Avalanche w/XT, 1995 Trek 820 setup for touring, 201? Yeah single-speed folder, 199? Huffy tandem.
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I believe the 6604-G is a part of the relatively new Ultegra SL line--a half-step up from Ultegra to Dura Ace. There's information on bikeforums and elsewhere about how SL compares to regular Ultegra.
As for compatibility, I imagine they are all compatible--though I'm not certain. Look on http://www.shimano.com
Sounds like you intend to run a triple crankset with just the inner ring at 24T? I'd be concerned about the cross-chaining between the chainring and smaller cogs. I'd be inclined to go for an older system like aquare-taper, ISIS, or Octalink, so you can swap in a longer axle and move the crank out a bit resulting in the chainring better centered relative to the cassette.
Edit: on second thought, the system may be OK. I just checked my road bike with 2-piece triple crank and 10-speed cassette. The inner chainring lines up pretty well with the 4th largest (lowest) cog, so it's not too far off from center and maybe you'll be using the larger cogs more for climbing anyway.
Last edited by JiveTurkey; 06-20-08 at 11:50 AM.