Mix and match 105 and ultegra

tonyhogg
tonyhogg Posts: 115
edited December 2015 in Workshop
My lbs just swapped my ultegra group set with hydraulic brakes over to a bike that had 105 as standard, however it doesn't sound too good and when in the small ring dropping down gears from the granny ring it takes ages to drop when going down the cassette?

Currently it's got a 105 rear mech, 105 front mech, ultegra crank, ultegra cassette and 105 chain, I'm also using the ultegra shifters, it sounded awful with a kmc chain fitted and the ultegra rear derailieur was causing problems. Any suggestions, thoughts advice would be appreciated.

Comments

  • dj58
    dj58 Posts: 2,223
    Are the components 6800/5800 ST-RS685 STI 11speed, what range is the cassette? Sounds like the RD needs setting up properly, what is the condition on the control cables, did they use new inner/outers, is the RD hanger straight?

    The document DM-RD0003-07-ENG.pdf from this page link http://si.shimano.com/#seriesList/18 under the heading RD-5800, shows you how to set up/adjust the RD.

    Here is a video covering it https://www.youtube.com/watch?v=Bbk5RcH0bbQ
  • tonyhogg
    tonyhogg Posts: 115
    All parts are brand new 11 speed, thanks for the info I'll take a look