What is this "extra wheel" for on this rear mech?

Manc33
Manc33 Posts: 2,157
edited December 2013 in MTB workshop & tech
I can see 2 jockey wheels as per normal but what is that third wheel thing for?

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Comments

  • think they called them "rollamajigs" when they sold them years ago.... reduces tight bends on the derailleur cable.
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  • Shadow mechs now eliminate their need.
  • nicklouse
    nicklouse Posts: 50,673
    It is just a cable guide and part of the mech. Not a rollamajig.

    Put the mech part number into google.
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  • Manc33
    Manc33 Posts: 2,157
    I've seen dozens of those XTR mechs and never seen that on one.
  • nicklouse
    nicklouse Posts: 50,673
    Manc33 wrote:
    I've seen dozens of those XTR mechs and never seen that on one.
    So what is the part number then?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • nicklouse
    nicklouse Posts: 50,673
    I will save you the trouble. It is an early M951 RR 8spd mech. Later versions did not come with the rotary cable guide.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown