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  1. #1
    Senior Member escarpment's Avatar
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    installing new brifters

    Just purchased some old 105 levers, st5500. my bike had DT shifters, so I also purchased DT cable bosses and generic derailleur cable housing off ebay.

    I have fitted everything and the ferrules that came with the cable just rattle around in the dt bosses and the shifter itself. Do I need other thicker ferrules, I feel if i tighten everything up there will be too much play.

    Thanks.

  2. #2
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    You do have housing ferrules on the ends of the housing, right? And you are using shifter housing, not brake housing, right?

    If you answer correctly to both, you should be good to go even if there is a bit of play with the ferrule to cable stop.
    "When dealing with stuff like this consider that this is a bicycle, not a spaceship." -- FBinNY

  3. #3
    Senior Member escarpment's Avatar
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    the answer is yes to both but

    I ended up finding some old shimano plastic ones I had which were larger in diameter, the fit in the holes much more snug. The metal ones that came with the cables were probably for new derailleur systems.

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    Oh yeah, most of the time, shifter housing is thinner and you need to use the plastic ferrules that are thicker than the metal ones.
    "When dealing with stuff like this consider that this is a bicycle, not a spaceship." -- FBinNY

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    Plastic ferrules are OK for shifter cables but I will not use them on brake cables due to the greater forces involved and the consequences of ferrule failure.

  6. #6
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    Hmm - I got some metal ferrules with some Jagwire cable kits that were pretty cheap from Decathlon - pretty sure they're not 'top of the range', and the ferrules seem to do OK for both gear and brake cables. Maybe they make them in an intermediate size that fits both types of cable within enough tolerance to work OK?

  7. #7
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    Quote Originally Posted by escarpment View Post
    Just purchased some old 105 levers, st5500. my bike had DT shifters, so I also purchased DT cable bosses and generic derailleur cable housing off ebay. I have fitted everything and the ferrules that came with the cable just rattle around in the dt bosses and the shifter itself. Do I need other thicker ferrules, I feel if i tighten everything up there will be too much play. Thanks.
    When tuning up a set of Shimano components, it is often best to pick up a set of factory Shimano cables which includes the internal cables, the housings, and all the bit pieces. They come in a nice grey box/sleeve with the brand name on the outside. Often saves a lot of hassle gathering all the correct parts to proceed without having to sort too many cats.
    /K

  8. #8
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    Quote Originally Posted by ksisler View Post
    ...Often saves a lot of hassle gathering all the correct parts to proceed without having to sort too many cats.
    I like cats, but fail to see where the come into the cable matter.

  9. #9
    bike whisperer Kimmo's Avatar
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    Quote Originally Posted by dsbrantjr View Post
    Plastic ferrules are OK for shifter cables but I will not use them on brake cables due to the greater forces involved and the consequences of ferrule failure.
    I've never seen a brake housing that would need a ferrule to prevent it going through any brake barrel adjuster or cable stop I can remember seeing. They're a nicety. I guess plastic ones could conceivably interfere with brake modulation slightly.

    And a metal ferrule is more of a necessity on shift housing IMO, what with the thin strands that like to work their way along and punch through ferrules, fouling cables in stops and adjusters...

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