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  1. #1
    Senior Member loubapache's Avatar
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    1992 Trek 520 Quill and clamp size

    Hi:

    I just got a 1992 Trek 520. I really like this bike. It is light and fast.

    However, it is a bit small for me so I had to raise the saddle to make myself confortable. That means I need a higher position for the handle bar. Does anyone know the quill and clamp size for the bike?

    I am thinking about buying something like this from Amazon but they have a couple different sizes:

    http://www.amazon.com/Origin8-Classi...pr_product_top

    TIA.

  2. #2
    coprolite fietsbob's Avatar
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    Hmm no one can measure I guess..

    Threaded headsets.. 2 kinds 1", stem is the size of the ID, 7/8"[22.2mm]
    Wrench 32mm


    there are also threaded headset types 1" stem , and steerer ID,
    the Outside diameter is 1.125", 1_1/8" 28.6mm
    headset wrench: 36mm


    If in fact it is a 22.2 stem, those you linked to are short, to get a higher bar level

    pony up fora Nitto Technomic they are a much higher rise. Longer Quill ..
    Last edited by fietsbob; 08-13-12 at 02:23 PM.

  3. #3
    __________ seeker333's Avatar
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  4. #4
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    I have the Nitto Technomic on an '86 Trek that I like very much. Very tall and nicely made. Do you have an idea of how tall your current stem is (above the minimum insertion line) and how much taller you want to go? The Nitto is 225 mm tall (total) and gives you from 125 (minimum) to 160 (maximum) above the headset. I'm not sure about the Origin8, but it looks to be 180mm tall (so, guessing around 45 mm shorter than the Nitto...but I couldn't find the exact specs).

    Also not too sure about your '92 Trek...but older treks almost always had the 1" quill stem (i.e., threaded fork) with 25.4 mm clamp. The Nittos come in both 25.4 and 26.0 mm clamp although the latter seems easier to find. If you get the 26.0, make sure to get shims (can get specific from Nitto or make your own) to fit the 25.4 bars (if this is what you have). It is usually on the bar somewhere.

  5. #5
    Senior Member loubapache's Avatar
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    Thank you all. I found one of my adjustable wrenches that has a scale on it so it is easy to measure. It is a 1" quill stem (22.2 mm) and a 25.4 mm bar diameter.

    I pulled the quill out and to my surprise, there is no minimum insertion mark. Instead, there is a "maximum height" line and that line is very close to the top wedge piece. So I pulled it up pretty much close to the max (120 mm above the headset nut) and now the handle bar is about 2" below the saddle so it seems to be fine for now. There is one other downside to the smaller frame size for me and that is the crank arm length. My seat height is fine, reach is adequate, bar postion is comfortable. However, my knee cap is in front of the spindle so it would be nice to increase the crank arm length a bit.

    I am very surprised by the agility of this old bike. Being a steel frame, the bike is very light. These bar end shifters are neat but it will take a little bit to be used to them. Being a noseless saddle rider (pls no flame here and this is the only saddle I and my friend can ride with), I need to be careful taking hands off the bar.

    For the Nitto, how is the other distance (the 80 mm in the example below) measures? From where to where? If I know that, I can just go and measure my current one to match the Nitto.

    Example: Technomic Road Quill Stem: 80mm; 72degree: 225mm Quill; 1"; 26.0
    Last edited by loubapache; 08-13-12 at 05:06 PM.

  6. #6
    __________ seeker333's Avatar
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    Quote Originally Posted by loubapache View Post
    For the Nitto, how is the other distance (the 80 mm in the example below) measures? From where to where? If I know that, I can just go and measure my current one to match the Nitto.

    Example: Technomic Road Quill Stem: 80mm; 72degree: 225mm Quill; 1"; 26.0
    80mm is the stem's extension length - it's 80mm long measured from center of stem (where bolt head is) to the center of the handlebar.

    stem_angle_diag.gif

    http://www.peterwhitecycles.com/stems.asp

    cheaper here, $99 purchase required for free shipping:

    http://www.ebikestop.com/nitto_techn...260-SM1181.php

  7. #7
    Senior Member loubapache's Avatar
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    Thanks, seeker333. I have everything I need now.

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