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XTR Pod – Ultegra Front Derailleur(6 posts)

XTR Pod – Ultegra Front DerailleurTFerguson
Jun 2, 2001 3:33 PM
I'm building a special "hybrid" using a touring frame and flat bar. I have XTR shifters and an Ultegra triple front derailleur and crankset . One click on the XTR goes from the small to the to the large chainring skipping the middle ring. Have I just discovered something every idiot knows? Or am I doing something wrong? If an Ultegra FD won't work with the XTR will a XT FD work still using the Ultagra triple crankset?
re: XTR Pod – Ultegra Front DerailleurSpoke Wrench
Jun 2, 2001 7:18 PM
I can't respond as to that particular combination, but I can tell you this:
My wife has a 2,000 Specialized Crossroads Pro. It came stock with LX rapid fire shifters, a Tiagra front derailleur, and a SR road crankset. It shifts just fine.

I doubt you will be satisfied using a mountain derailleur with a road crankset. The curve of the derailleur cage won't match the larger road chainring and you will have to mount the derailleur way high on the seat tube. You'll probably get chain rub against the bottom of the derailleur cage when you are in the granny.

I don't have any very likely theories about how to get your XTR/Ultegra combination to work. Is the shift cable mounted on the side of the anchor bolt farthest from the pivot?

I don't know if this has been very much help, but it's the best I can do tonight.
Different cable pull lengthsTFerguson
Jun 3, 2001 10:47 AM
Continued investigation shows that the mtb (XT,XTR) shifters are pulling about 19 mm of cable from little to big ring while the road shifters (Ultegra,Tiagra) are only pulling about 13 mm. Would it be possible to measure the cable pull on the XTs on your Specialized?
Thanks,
Terry
Different cable pull lengthsSpoke Wrench
Jun 3, 2001 3:05 PM
I just tried to measure the cable pull on a 9-speed Ultegra and on a new LX, but I have to tell you, that's not so easy to do accurately. They both pull about 14mm of cable from the smallest to the largest chainring position, but I could be off by a mm or two.

Another question I have regards the front derailleur. Nine-speed front derailleurs have a little narrower cage than 8-speed and previous. That will definitely affect shifting on a triple.
Different cable pull lengthsTFerguson
Jun 3, 2001 5:57 PM
It's stamped 6503 which is a 9 speed triple.
Got it !TFerguson
Jun 3, 2001 7:07 PM
Ran the cable up over the little protrusion then under the washer just like in the picture (duh). That gives it just enough more length on that side of the pivot.
Thanks for keeping me looking.
Terry