Dura-Ace 9000 FD shifting pattern
Posted: Tue Jan 28, 2014 7:28 am
Guys,
This is my first post to this forum. I just wanted to share my observations with you and if you are using the same system, let me know if you face the same observations.
Took me a few good hours to install the new Dura Ace 9000 group on my S-works SL4. I was using the 7900 for a good 2.5 years before this. Installation was quite straight forward and I confirm here that you do need inline barrel adjusters to get the FD to work properly. It's needed to get the low position adjustment to work correctly ( small chainring with 4 smallest sprockets).
I have noticed quite a number of differences the shift patterns between FD-9000 with FD-7900. I know that t-trim doesn't exist for 7900 .
In the dealer manual , the index points for the FD-9000 are labelled as ( from lowest position to highest position ) as:
L-trim <--> Low <--> T-trim <--> Top.
Some of my observations:
1) Shifting up and down is sequential on this shifter. Unline 7900 where it goes Top <--> Low <--> Low trim
2) Some times the down shift is slow especially when shifter is pressed from T-trim to Low position. Chain is slow to drop to small chainring. Another tap is needed to engage the L-trim position to complete the shift
3) The distance moved between Top to T-trim for the FD is very minor.
4) The distance moved between L-trim to Low for the FD is significant and larger than top-t-trim
5) When dropping from big chainring to small chainring, the FD will stop at low position. Another tap is required to move the FD to L-trim position.
6) Upshifts are all great and normally will reach the Top position all the time.
7) Shifting works better on the work bench than on the actual road. When on the road shifts with load, the delay in downshifting is observed.
Can you guys confirm what I am observing on the FD shifting pattern is part of the design of the shifter or I perhaps have got too much tension or the FD to chainring clearence is a tad too big to get this delay in the downshift.
This is my first post to this forum. I just wanted to share my observations with you and if you are using the same system, let me know if you face the same observations.
Took me a few good hours to install the new Dura Ace 9000 group on my S-works SL4. I was using the 7900 for a good 2.5 years before this. Installation was quite straight forward and I confirm here that you do need inline barrel adjusters to get the FD to work properly. It's needed to get the low position adjustment to work correctly ( small chainring with 4 smallest sprockets).
I have noticed quite a number of differences the shift patterns between FD-9000 with FD-7900. I know that t-trim doesn't exist for 7900 .
In the dealer manual , the index points for the FD-9000 are labelled as ( from lowest position to highest position ) as:
L-trim <--> Low <--> T-trim <--> Top.
Some of my observations:
1) Shifting up and down is sequential on this shifter. Unline 7900 where it goes Top <--> Low <--> Low trim
2) Some times the down shift is slow especially when shifter is pressed from T-trim to Low position. Chain is slow to drop to small chainring. Another tap is needed to engage the L-trim position to complete the shift
3) The distance moved between Top to T-trim for the FD is very minor.
4) The distance moved between L-trim to Low for the FD is significant and larger than top-t-trim
5) When dropping from big chainring to small chainring, the FD will stop at low position. Another tap is required to move the FD to L-trim position.
6) Upshifts are all great and normally will reach the Top position all the time.
7) Shifting works better on the work bench than on the actual road. When on the road shifts with load, the delay in downshifting is observed.
Can you guys confirm what I am observing on the FD shifting pattern is part of the design of the shifter or I perhaps have got too much tension or the FD to chainring clearence is a tad too big to get this delay in the downshift.