|Triple Ultegra Ring Configurations||jrm|
Aug 3, 2002 1:06 PM
|OE is 52/42/30, bolt spacing is 130mm. Im using a 12-27 cassette. What can i do in regard to ring sizes? Can i go double ring too? anyone done this?|
|re: Triple Ultegra Ring Configurations||Dan Cas|
Aug 3, 2002 2:38 PM
|The inner ring is a 74 bolt pattern,so you can go from 24-32 teeth.The 2 outer rings can be from 38-infinity.You can limit your derailleur with the screws to only use 2 rings.I ran a 26-38-50 and it worked well.|
|re: Im looking...||jrm|
Aug 3, 2002 5:15 PM
|And a 46/38/30 with the 12-27 cassette looks like it would work well.|
|re: Im looking...I||atpjunkie|
Aug 6, 2002 3:53 PM
|I'd go 50/38 double or 50/38/28 triple or a 44 single!!!!!!|
|re: Im looking...I||Jan Gerrit Klok|
Aug 8, 2002 12:37 AM
|I run a 42t single ring up front, with the 12-27 cassette. I've never run out of gears, even in Superprestige races! If you're strong enough to climb everything up on a 44t, heck why not!
You could also get a 11t cog (from the same type as the cassette), and leave out the 14t. You get a 11-27 cassette, and then with a smaller ring up front, 40-11 will be all but identical to the 44-12 largest gear, while gaining a 40-27 climbing gear that feels like a 44-29/30!
For epic rides, I'd get 48-36-26 rings. I have that on a dual suspension bike, works for me!
|re: Triple Ultegra Ring Configurations||jimbo1|
Aug 9, 2002 6:25 PM
|Well, I think my first reply went to someone's email (sorry) so I'll try again. Is there any magic to the difference between the chainring sizes? Should the jumps be the same or similar and less than 12? What is a good source for these non-standard ring sizes (non-ultegra) and does it really matter that they won't have the ramps and pins? It looks like it could get expensive to buy three new rings - almost as much as the crankset cost new.
I have the 105 triple with the same chainring sizes as the ultegra and the gearing is too large. I just built up my first cross bike and am still trying to figure these things out. Pretty much a complete newbie. I did one race last year on my MTB and it was the hardest 40 minutes of racing I've ever done. So I am now hooked, but also full of questions (I'm sure I've left some out).
Reading through this board over the last 6 months or so has helped me set up my bike up to this point so thanks for all the help so far. It is a frankenbike, as it sounds like lots of cross bikes are, but so far it is fun.
|re: Triple Ultegra Ring Configurations||atpjunkie|
Aug 14, 2002 10:21 AM
|Specialties T/A makes the best rings period. In whatever size you need. If you have a 105 crank. Buy T/A specialties in a 38 sm and 46 or 48 lg. you can get them from Cyclocrossworld.com. If you want to set it up as a single get the T/A in 42 or 44. You can keep the inner little(granny) ring but probably won't use it unless you are doing epics. My commuter/epic/cross rig runs XTR 26/36/48 and it's super. I ride it on certain MTB rides, my race rig I'm building will be a double 38/46 or single 42, Campy mostlikely w/ TA rings.
Frankenbikes are the way to go w/ cross, you are on the right track.