[nor_cal_rider]

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.

 

[frdfandc]

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.

 

[MR_GRUMPY]

"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.

 

[Midgetman]

The cable failure was probably due to frayed cuts at the housing ends. That can be helped with a good pair of cable pliers.

True: Shimano chains use pins.

 

[stickboy71]

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.

 

[Torreybiker]

Actually the Trek Madone I just purchased with Ultegra 6700 components including chain has a KMC missing link installed from the factory. Seemed to work fine (2000 miles) but have replaced chain with DA 7900 and connex link.