Jun 24, 2003 7:21 AM
|I want to replace my 42 and 52 chainrings with a 39 and 53 on my 105 Triple but I have only seen Ultegra chainrings in this size. Are there 39 and 53 105 Triple chainrings available? If not, will Ultegra work with my 105 cranks. |
|re: Ultegra/105 Rings||Rusty Coggs|
Jun 24, 2003 7:54 AM
|Yes, ultegras fit,but the 39 won't be ramped like the 42 and may not shift as well. There may be aftermarket 39 rings with shifting ramps.Check www.branfordbike.com|
|Here's the dillio...||Lone Gunman|
Jun 24, 2003 6:17 PM
|TA makes a 39t ring for a triple that is pinned and ramped that will work well but not identical to Shimano stock parts. Probably also make a 53 that is ramped and pinned. Check peterwhitecycles.com for info.
You will also need to swap out your front derailleur for a DA triple front derailleur. Huh? That's right, the 105 and Ultegra are meant to shift a difference of 10 teeth on the middle to big ring and 39 to 53 is 14t on a triple setup. Basically you want DA performance in ring sizes on a 105 budget, and Shimano got you there. Info courtesy of peterwhitecycles.
|Well actually,||Rusty Coggs|
Jun 24, 2003 6:35 PM
|The ultegra triple FD will shift a 39/53 ok. There just needs to be at least a 10 tooth difference between the middle and big ring.|| |