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I have 2 questions about my DA 7900 groupo -

1) I know the 7800 brifters tended to "eat" RD cables (I used to replace mine every 2500-300 miles after 2 RD cable failures), do the 7900's have a similar problem (or did Shimano fix it with new brifter/cable routing)?

2) Has Shimano started using the 7900 chain w/quick-link again? I thought I read something last summer about the quick-link's stretching and needing to be replaced with a std. link...any truth to this, as my new TREK showed up with this style chain from the factory (and it's almost time to replace it).

Thanx for any/all help.
 

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I can only answer #2.

Shimano chains - all of them - still use the pin. No removable link. However, many people use either a KMC master link or the Wipperman link with these chains.
 

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"I know the 7800 brifters tended to "eat" RD cables "
??????????????????????????????????

My shifters haven't heard that.
7800 shifters 15,000 miles. no cable changes.
7700 shifters 40.000 miles. no cable changes.
 

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There was a running change made to all Shimano 10-speed shifters to alleviate the "cable eating" issue - which presumably was implemented in the 7900 shifters.

The Shimano quick link was short lived and they are back to using pins.
 
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