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 Post subject: Shimano question
PostPosted: Wed Feb 09, 2011 1:57 pm 
Gold Trader / PoTM Winner / RB Rider
Gold Trader / PoTM Winner / RB Rider
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Joined: Wed May 19, 2010 11:32 pm
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Location: Bristol
Sorry if this has been asked a million times but I am clueless when it comes to road stuff.

I have a 7700 dura-ace rear mech (think its 8/9 speed)

I wanted to use some bar-end shifters so bought some off ebay.

However, they are mis-matched. The front mech one is dura ace sl-bs77.
The rear is Ultegra sl-bs64.

My concern is the ultegra one. It is 8 speed which is what I need but a small sticker on its side states it is not compatible with dura-ace.

My question (finally!) is does this refer to the older style dura-ace? I thought I read somewhere that the 7700 went to a "normal" cable pull ratio.

If it isnt technically compatible is it possible to make it compatible in some way?

Cheers for the help. Luke


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 Post subject:
PostPosted: Wed Feb 09, 2011 2:12 pm 
Retrobike's #1 Comedy Genius
Retrobike's #1 Comedy Genius
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Joined: Thu Jan 04, 2007 8:07 pm
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If they're mismatched off eBay and the auction had no info as to this, I'd punt them back to seller myself...........


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 Post subject:
PostPosted: Wed Feb 09, 2011 2:52 pm 
Old School Hero

Joined: Mon Apr 12, 2010 3:05 pm
Posts: 162
As far as im aware its 6,7,8 speed Dura Ace that is the 'problem' with a different actuation ratio of 1.8:1 vs 1.67:1 for all other shimano -which includes 9 speed 7700 and 8 speed Ultegra. I pretty sure you should be OK.

Im hoping to stick a 7700 rear derailleur on my 753 Peugeot at some point and will be using it with some 8 speed down tube shifters.


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 Post subject:
PostPosted: Wed Feb 09, 2011 3:34 pm 
Gold Trader / PoTM Winner / RB Rider
Gold Trader / PoTM Winner / RB Rider
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Joined: Wed May 19, 2010 11:32 pm
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Location: Bristol
Lysander wrote:
If they're mismatched off eBay and the auction had no info as to this, I'd punt them back to seller myself...........


I am still considering this but they were fairly cheap (£25) and do look more or less identical. (there is a grey ring on the u and a black on the da)

It's one os those cases where he is effectively lying through omission.

The photo only showed the da face up so I assumed the face down was the same.

Cheers for the tech info. Makes it a bit better.


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