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  1. #1
    the new Gilbert Grape
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    P-650b cable stops

    I'm building up a P-650b and I'm having problems with running the deraileur cables. Standard 4 or 5 mm housing ferules do not seem to fit into the cable stops. The biggest issue is the stop just behind the head tube where the cables come in at a steepish angle form the shifters.

    Below is a picture of a standard 5mm housing and ferule. The ferule is shown about as deep in the stop as it will fit. A 4mm cable does no better. Is there a special ferule this is needed for these stops?
    Attached Thumbnails Attached Thumbnails P-650b cable stops-wp_000643.jpg  

    Each bicycle owned exponentially increases the probability that none is working correctly.

  2. #2
    nothing relevant to say
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    Paint buildup perhaps? I've had this happen with powder coated frames. Do you have a Dremel with the small sanding barrel? I cleaned out a stop using that on a slow speed, very carefully.

  3. #3
    Ritchey Design Rep
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    Quote Originally Posted by laffeaux View Post
    I'm building up a P-650b and I'm having problems with running the deraileur cables. Standard 4 or 5 mm housing ferules do not seem to fit into the cable stops. The biggest issue is the stop just behind the head tube where the cables come in at a steepish angle form the shifters.

    Below is a picture of a standard 5mm housing and ferule. The ferule is shown about as deep in the stop as it will fit. A 4mm cable does no better. Is there a special ferule this is needed for these stops?
    I haven't heard of there being problems with this before. Have you tried other ferules? It is a pretty standard size so if all ferules are giving you problems. It's possible it's just a little paint buildup.
    Dave Law
    Ritchey Design Representative

  4. #4
    the new Gilbert Grape
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    Okay, I found a solution. First I tried to clean out the stops but there was nothing to clean out and all of the stops were similarly sized. The ferrules were going in as deep as they could and bottoming out. Then I got the idea to try larger ferrules and that worked. I had an old set of step-down ferrules that were used in the 80's on some bikes. These ferrules are larger than standard 5mm cable ferrules and fit perfectly into the cable stops without any play.

    5mm ferrules work well enough in the other stops. They fit a bit loose, but only the stop behind the head tube has cables coming into it at steep angles.
    Attached Thumbnails Attached Thumbnails P-650b cable stops-wp_000653.jpg  

    Each bicycle owned exponentially increases the probability that none is working correctly.

  5. #5
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    Pictures , review?

  6. #6
    Ritchey Design Rep
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    Quote Originally Posted by Fred Smedley View Post
    Pictures , review?
    Funny you should say. The March issue of Switchback magazine will have a comprehensive review of the P-650B. We just got our copy at the office so they should be hitting the newsstands very soon, if not already.
    Dave Law
    Ritchey Design Representative

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