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9speed bar-end rear derailleur shift lever

Old 07-07-06, 01:39 AM
  #1  
Bizikleto
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9speed bar-end rear derailleur shift lever

Hi to all,

I have a Shimano Dura-Ace bar-end rear derailleur shift lever with a peel-off sticker on it that says that it is suitable for 9-speed and 8-speed setups. It has 9 notched (or indexed) positions. I've tried it with an 8-speed sprocket and my experience is that 8 clicks of the shifter don't match the 8-gear cog full stretch. Anyone knows how to make it fit an 8-cog sprocket?

Thanx.
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Old 07-07-06, 10:44 AM
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Hmm....that's odd (about the sticker, and I also remember reading somewhere about that sticker being in error). I use 9 speed DA bar end shifters on 9 speed and I know they won't work on my 8 speed cassette due to the diff in cog spacing. I also have an 8 speed Ultegra bar end shifters which work for both 7 and 8 speed cassettes.
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Old 07-07-06, 10:55 AM
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I've got Dura-Ace nine speed barcons, too, and I think I remember that sticker, or maybe it was in the instructions, where it stated it was compatible with both 8 and 9 speed. But you're right, the indexing won't match the 8 speed cassette, so the only way you could run 8 speed and have it work right is to switch it to friction mode.........of course, those same instructions also state that you have to use the shifters with a Dura-Ace derailluer, and that's wrong, too.
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Old 07-07-06, 12:55 PM
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Scrap the 8 speed cassette and put on a 9 speed. Add a new chain while your at it. Great excuse for an upgrade.

SB
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Old 07-09-06, 08:40 PM
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To make a long story short, they say "to use these shifters with Dura Ace derailleurs" because they labelled these shifters as "Dura Ace". Of course, we all know they work with all Shimano and Shimano-compatible derailleurs, but there is a catch:

- The old Dura Ace 8-speed derailleur was different and used a different amount of cable pull. So all 9-speed shifters – both bar-ends and STIs – are compatible with 9-speed systems OR an 8-speed system with a Dura Ace 8-speed derailleur.

It is quite possible to use the 8-speed cassette with a set of 9-speed shifters. Use the alternate cable routing as shown on Sheldon's page.

As SoonerBent said, you may decide to "upgrade" to 9. It may be a good move if your chain and cassette need changin, but otherwise, why throw away good componentry?
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Old 07-10-06, 03:55 PM
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Originally Posted by Bizikleto
Anyone knows how to make it fit an 8-cog sprocket?
Yep. Read the sticker more carefully. It says something like, "9-speed with 7700 and 8-speed with 7400". So if you get an old Dura-Ace rear derailer (7400, 7401, 7402, or 7403), it will shift 8-speed spacing because the cable pull requirements are different in the old Dura-Ace stuff.
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Old 07-11-06, 04:54 AM
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Thanks everybody. Yes, the new cable routing helps--with some glitches every now and then, but it does the job. Thank you for the link to Sheldon's page. It was of most help in understanding the difference of cable routing.

Cheers.
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Old 07-11-06, 05:21 AM
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Pre-9-speed Dura-Ace used a different cable pull ratio than all other Shimano deraillers built since indexing (which are all the same cable pull), so it's quite possible that the 9-speed bar-end shifter works for 9-speed (with any Shimano rear derailler designed for indexed shifting, except for pre-9-speed D/A) and also works for 8-speed but only with the 8-speed D/A rear derailler.
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