Do SRAM Derailleurs Stay In Adjustment Longer?
08-20-09, 10:58 PM
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Do SRAM Derailleurs Stay In Adjustment Longer?
Ok LBS types and experienced mechanics, here is a question for you.
With their longer cable travel do indexed SRAM rear derailleurs stay in adjustment better than Campy and Shimano ones?
It seems like they should as the longer cable travel per shift should make them less sensitive to cable stretch and housing compression.
With their longer cable travel do indexed SRAM rear derailleurs stay in adjustment better than Campy and Shimano ones?
It seems like they should as the longer cable travel per shift should make them less sensitive to cable stretch and housing compression.
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08-20-09, 11:09 PM
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Ok LBS types and experienced mechanics, here is a question for you.
With their longer cable travel do indexed SRAM rear derailleurs stay in adjustment better than Campy and Shimano ones?
It seems like they should as the longer cable travel per shift should make them less sensitive to cable stretch and housing compression.
With their longer cable travel do indexed SRAM rear derailleurs stay in adjustment better than Campy and Shimano ones?
It seems like they should as the longer cable travel per shift should make them less sensitive to cable stretch and housing compression.
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08-21-09, 05:19 AM
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I hardly ever touch my barrel adjuster after I initial setup and break in. Are you using those inline adjusters? Some of those inline adjusters cause more problems than they solve and they mess up your adjustment. The worst are those 1.5" long inline adjusters. They seem to work themselves back in.
08-21-09, 07:50 AM
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+1 on the stability of Shimano derailleur adjustments. After a cable change and initial adjustment, they need only one or two minor tweaks as the new cables bed in and then require no attention at all.
08-21-09, 08:10 AM
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I would say no. The difference in the cables pulls in not that great. SRAM is 3.1mm and the average for a Campy 10 shifter is 2.83mm - only 9% less. The published info I have says Shimano averages 2.3mm. Only SRAM cable pulls are all the same. The others pull a little less cable for the smaller cogs and increase slightly toward the large cog shifts. Campy pulls 2.5mm five times, 3mm twice and 3.5mm twice.
I hardly every need to tweak the shift cable tension on a Campy RD, once the initial cable stretch is complete. All brands have to deal with initial cable stretching and seating. That may require several minor tweaks in the first 200 miles or so. After that, the adjustment should hold for a long time.
I hardly every need to tweak the shift cable tension on a Campy RD, once the initial cable stretch is complete. All brands have to deal with initial cable stretching and seating. That may require several minor tweaks in the first 200 miles or so. After that, the adjustment should hold for a long time.
08-21-09, 04:51 PM
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No they do not. I have personal experience with comparable levels of Shimano and SRAM as far as off road components go, both with identical housing and cables (barring my error) and the longevity of their adjustments were pretty much on par. Adjustment on the first ride and then a little later and then only when I wreck.
08-21-09, 05:38 PM
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I have a SRAM XO Der and XO Gripshifters. After initial setup and a few adjustments over the next month, there has been no real need to readjust the shifting. Maybe twice in the last three years, while riding, I have turned the barrel adjuster an eighth of a turn to fine tune the shifting. As for 'retuning' on the workstand, haven't needed to in 7500 miles. bk
08-21-09, 06:08 PM
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Many have problems with cable-stretch throwing their derailleur - front mostly - out of adjustment. But the addition of a simple barrel-adjuster into the cable-line solves this readily. I would imagine this would do the trick for either SRAM, or Shimano, or whatever.
