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shifter compatibility

Old 04-11-17, 12:29 AM
  #1  
apastrak
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shifter compatibility

The black plastic ring on my right bar end shifter broke (microshift 9 speed BS-T09). It no longer works. As far as I understand, I need to change the shifter set.

Here's my setup:
Fuji Touring 2015
Crankset: Deore M590 48/36/26
Front derailleur: Shimano Altus FD-M371
Rear derailleur: Shimano Deore M591

I'm wondering whether the BS-T09 is my only choice, or whether I can go with the SL-BS77 (Dura-Ace 7700), for example.

I read somewhere that despite being 9 speed, the SL-BS77 would not be compatible with triple front derailleurs. Here's the explanation:

"The SL-BS77 will work with any 9 speed rear cassette, but will NOT work with the triple (x3) front chain ring. They are for a x2 front. With that said, there is the option of using them as friction shifters and it MIGHT be possible to adjust the limiters and have the shifter work with a triple, but that is just a WAG. Definitely would not have index shifting on the front."

However, Jenson USA specs claim that it's compatible:

Shimano SL-BS77 double/triple x 9-speed bar end shifters are compatible with double or triple chainring cranksets.
Friction-toggle right lever
FD/Shifter Compatibility: Shimano Road Double, Mountain Triple, Shimano Road Triple
Compatible with Shimano rear derailleurs

To be honest, I don't know what any of this means, and would need the input of bicycle mechanics savvy folk to understand whether these would work!

Thanks! : )

Last edited by apastrak; 04-11-17 at 01:03 AM.
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Old 04-11-17, 07:49 AM
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SkyDog75
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The SL-BS77 front shifter isn't indexed. Being a friction shifter, it doesn't care whether you're running a double or a triple, so long as it can pull enough cable to move your derailleur all the way from the inner ring to the outer.
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Old 04-11-17, 10:48 AM
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apastrak
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Thank you! This answers my question!
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Old 04-11-17, 03:54 PM
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HillRider 
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Originally Posted by apastrak View Post
I read somewhere that despite being 9 speed, the SL-BS77 would not be compatible with triple front derailleurs. Here's the explanation:

"The SL-BS77 will work with any 9 speed rear cassette, but will NOT work with the triple (x3) front chain ring. They are for a x2 front. With that said, there is the option of using them as friction shifters and it MIGHT be possible to adjust the limiters and have the shifter work with a triple, but that is just a WAG. Definitely would not have index shifting on the front."
I don't know who wrote this but it's absolute nonsense. As SkyDog75 noted, all barend (and downtube) front shifters are friction only and they will work with any double or triple crank.
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Old 04-16-17, 06:40 PM
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apastrak
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Thank you HillRider! I appreciate your help
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