Jump to content

Dura Ace shifters 105 Group


TEAM KOEKEMOER
 Share

Recommended Posts

Not sure if the DA 7900 shifters will work with a 105 5600 RD.(maybe 5700) When 7900 was released I considered mixing the shifters with a 6600 rd and I was told that they were not comnpatible,by more than 1 lbs.

Link to comment
Share on other sites

Not sure if the DA 7900 shifters will work with a 105 5600 RD.(maybe 5700) When 7900 was released I considered mixing the shifters with a 6600 rd and I was told that they were not comnpatible,by more than 1 lbs.

 

 

Looks like you got conned by more than one LBS. Not only do they fix prices, but information too.

Link to comment
Share on other sites

They actually did me a favour. Went Campy instead from another lbs and haven't looked back....

Edited by caad4
Link to comment
Share on other sites

Not only do they fix prices, but information too.

 

dis-information, designed to con you into buying more crap at their inflated prices.

Link to comment
Share on other sites

the shifters vs rd/fd debate is frankly bollocks - i was running 105 10sp shifters with a shimano 600 (8 speed) rd and fd at one point - no probs. the reach is the same from 8sp to 10sp (just the cog spacing changes). the rd/fd have no influence on the indexing.

Link to comment
Share on other sites

Here is the chart they used at the time. Outdated, as 6700 and 5700 don't seem to be there, but shows 7900 stands on it's own..

 

http://www.shimano.com/publish/content/global_cycle/en/us/index/tech_support/tech_tips.download.-Par50lparsys-0025-downloadFile.html/01)%20Drivetrain%20Compatability%20Chart.pdf

 

Sorry, to edit, not only the bike shop lied, the manufacturer lied as well. How else will the sell "new" crap?

Link to comment
Share on other sites

the shifters vs rd/fd debate is frankly bollocks - i was running 105 10sp shifters with a shimano 600 (8 speed) rd and fd at one point - no probs. the reach is the same from 8sp to 10sp (just the cog spacing changes). the rd/fd have no influence on the indexing.

 

Not quite. The 8 speed Dura Ace RD only works with 8 speed and below DA shifters. Of course the RD has an influence on indexing. Its a parallelogram, so when you pull on the cable anchor point the pulleys move a corresponding amount that is determined by the geometry of that parallelogram. For this reason you cant mix Sram.Campag and Shimano. Likewise, you cant use a new 10 speed Shimano MTB RD witb 9 speed Shimano shifters.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

My Profile My Forum Content My Followed Content Forum Settings Ad Messages My Ads My Favourites My Saved Alerts My Pay Deals Settings Help Logout