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Dura Ace 10 speed bar end shifters, friction

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Dura Ace 10 speed bar end shifters, friction

Old 01-26-17, 10:59 PM
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Banzai
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Dura Ace 10 speed bar end shifters, friction

Front/left shifter is supposed to be friction. Yet there is a clear detent right in the middle, like it's an indexed double shifter with a fair amount of trim.

Any thoughts on this? Am I missing something WRT changing it? I can't find any obvious adjustment.
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Old 01-27-17, 08:47 AM
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Originally Posted by Banzai View Post
Front/left shifter is supposed to be friction. Yet there is a clear detent right in the middle, like it's an indexed double shifter with a fair amount of trim.

Any thoughts on this? Am I missing something WRT changing it? I can't find any obvious adjustment.
Sounds odd. I have 10-speed Dura Ace SL-7900 downtube shifters (same levers as the barends) on a set of Gevenalle modified brake levers on one bike and a set of the 10-speed Dura Ace SL-BS79 barends on a second bike and neither front shifter has any detent or other "index" feeling at all. I wonder if you have the tension bolt cranked down too tight.

Last edited by HillRider; 01-27-17 at 08:54 AM.
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Old 01-27-17, 09:44 AM
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I am not familiar with their 10 speed shifters, other (older?) models of Shimano bar end shifters can have the levers attached to the bar plug mounts in several different ways, but only one way does not result in weird behavior like phantom clicks, hybrid index/friction modes, or weird numbers of clicks. It could be that the OP's left shifter is assembled 1/4 turn from correct.
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Old 01-27-17, 09:54 AM
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Originally Posted by HillRider View Post
Sounds odd.
+1....I use 10sp D-A bar ends on one of my bikes, the left shifter just feels like a conventional friction shifter.
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Old 01-27-17, 11:02 AM
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I'll take it apart and check it again.
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Old 01-27-17, 11:25 AM
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@Banzai, I have some 8S generation 'Ultegra' bar-ends that have that odd detent around the middle of travel. I re-clocked it as was suggested, but the detent remained, albeit in a slightly different location, IIRC.

I am using mine on a triple and now have the detent approximately placed where it's felt when downshifting from the outer to middle ring, it does not quite line up this way for an upshift from the granny ring, but it's close.

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Old 01-27-17, 04:13 PM
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Originally Posted by bradtx View Post
@Banzai, I have some 8S generation 'Ultegra' bar-ends that have that odd detent around the middle of travel. I re-clocked it as was suggested, but the detent remained, albeit in a slightly different location, IIRC.

I am using mine on a triple and now have the detent approximately placed where it's felt when downshifting from the outer to middle ring, it does not quite line up this way for an upshift from the granny ring, but it's close.

Brad
Good to know. I'm about to go take the thing apart and check. It's basically friction, but at the halfway point in the lever travel there is a subtle but definite detent of sorts that the lever likes to settle into.
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Old 01-27-17, 04:22 PM
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Originally Posted by Banzai View Post
Good to know. I'm about to go take the thing apart and check. It's basically friction, but at the halfway point in the lever travel there is a subtle but definite detent of sorts that the lever likes to settle into.
My lever won't settle into the detent's location and will hold place at the edges of the detent. Maybe I have more tension on the lever than you.(?)

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Old 09-22-19, 01:40 AM
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I have the same SL-BS79 left lever with a detent mid-way up, but it won't hold tension, no matter how much I tighten the screw. Is there some other way to increase tension so friction will hold wherever the shifter is adjusted?
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Old 09-23-19, 09:22 AM
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Thought I'd try this fix on the left bar end shifter youtube.com/watch?v=So2dGQ7Nld0 though I didn't expect it to work. Now the click/detent is all the way down, and it holds tension just fine! Shifts beautifully!
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