Just to be sure

HonestAl
HonestAl Posts: 406
edited May 2013 in Road buying advice
Out for a ride this morning when I had what I'd consider a pretty major mechanical burp. In that my rear mech cage split in two, the section holding the lower jockey wheel just falling off. Bit of a bugger really. Thankfully I'd just got up the last main climb of the ride so it was pretty much downhill to home, so I coasted along, fingers crossed that the chain didn't decide it would be happier entangled round a spoke.

Anyhoo, it's a Dura Ace 7900 - about 4 years old (well, bought about 4 years ago) I'm assuming pretty much any medium cage Ultegra / Dura Ace rear mech would be a functional replacement? I've not been following changes to bike tech for the past couple of years, so barring the electronic / 11 speed stuff Shimano have intro'd, there's nothing sneaky happened to change the compatibility of their "normal" mechs?

ta
"The only absolute statement is that everything is relative" - anon

Comments

  • Grill
    Grill Posts: 5,610
    Short cage (SS). DA7900 never came in a medium cage (GS) configuration.
    English Cycles V3 | Cervelo P5 | Cervelo T4 | Trek Domane Koppenberg
  • crankycrank
    crankycrank Posts: 1,830
    Have you considered just buying the parts you need to fix the mech? http://techdocs.shimano.com/media/techd ... 676546.pdf
  • HonestAl
    HonestAl Posts: 406
    Interesting idea about the spare parts and yes, I meant short cage - brain fart!! Trouble is I'd need at least both inner and outer plates, which would cost about twice the cost of an Ultegra 6700 SS - then I'd have to convince myself I'd done a decent job of putting it back together :-) I know DA are meant to be more durable, but to be honest, it's the only time I've managed to break a mech, either Ultegra or DA so I'm not too overwhelmed about getting DA again.
    "The only absolute statement is that everything is relative" - anon
  • Grill
    Grill Posts: 5,610
    Parts don't "just fall off".
    English Cycles V3 | Cervelo P5 | Cervelo T4 | Trek Domane Koppenberg
  • smidsy
    smidsy Posts: 5,273
    Grill wrote:
    Parts don't "just fall off".

    Really..Oh...Well that nice chap down the pub must have been mistaken about the lorry and my TV then. Come to think of it, it is a little strange that there was no damage. :lol:
    Yellow is the new Black.
  • HonestAl
    HonestAl Posts: 406
    The real question was about compatibility of current models. Not sure I've actually spotted an answer to that yet but I may have overlooked something. But it's great that you're interested in the cause of the demise of my derailleur.
    "The only absolute statement is that everything is relative" - anon
  • Grill
    Grill Posts: 5,610
    HonestAl wrote:
    The real question was about compatibility of current models. Not sure I've actually spotted an answer to that yet but I may have overlooked something. But it's great that you're interested in the cause of the demise of my derailleur.

    The real question is why you didn't use Google to find this widely available and well known chart...
    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
    English Cycles V3 | Cervelo P5 | Cervelo T4 | Trek Domane Koppenberg
  • HonestAl
    HonestAl Posts: 406
    Thanks. Even for the sarcasm. Very witty.
    "The only absolute statement is that everything is relative" - anon

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