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  1. #1
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    Cinelli Stem questions.

    okay, first couple of questions from the newbie.
    - What's the difference between the Cinelli 1A and 1R?
    - Is 73 degrees the 'standard' or most 'common' stem degree? I seem to see a lot of these around.

    thanks all, b
    Last edited by bolo; 05-14-14 at 10:03 AM.

  2. #2
    If I own it, I ride it CV-6's Avatar
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    Cinelli 1A courtesy VeloBase

    542A0A06-2F7C-4232-939C-4A808E268171.jpeg

    Cinelli 1R courtesy VeloBase

    B781C69D-112F-4823-8789-89398E2139CB.jpeg

    Note difference in clamping.

    I will let someone else answer about the other.
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  3. #3
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    The 1A is Canadian, the 1R is racing, eh.

  4. #4
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    Quote Originally Posted by jiangshi View Post
    the 1a is canadian, the 1r is racing, eh.
    lol!
    “You meet the nicest people on two wheels!"
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  5. #5
    Decrepit Member Scooper's Avatar
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    From the Cinelli catalog. The reason for the prevalence of 73° (or, more precisely 17°, the 90° complement of 73°) stems is that 73° is a popular frame head tube angle, and is close enough so that an HTA of anywhere between 72° and 74°, a stem with a 17° stem extension angle the extension will look pretty much parallel to the ground.

    - Stan

  6. #6
    Senior Member Chombi's Avatar
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    I you want a more reliable no-nonesense stem, you go with the 1A. The 1R wins the aesthetic challenge, but had been know to sometimes have problems with its bar clamping system.
    BTW, with the re-issue of the 1A a couple of years ago, they have gone down a in price quite dramatically.
    Last edited by Chombi; 05-14-14 at 08:11 PM.

  7. #7
    Decrepit Member Scooper's Avatar
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    Here's the 1R clamping system.

    - Stan

  8. #8
    Senior Member RobbieTunes's Avatar
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    There's also a "button" model that doesn't use the 1R clamping system, is there not? Maybe I need to go check mine, but I'm sure it bolts from below, at an angle, directly into the stem.

    Robbie ♪♫♪...☻

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  9. #9
    Decrepit Member Scooper's Avatar
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    Quote Originally Posted by RobbieTunes View Post
    There's also a "button" model that doesn't use the 1R clamping system, is there not? Maybe I need to go check mine, but I'm sure it bolts from below, at an angle, directly into the stem.
    Robbie, there's the attacco apribile, or "openable handlebar stem" from the mid-eighties that hinged at the front and had a bolt that secured the hinged top to the bottom of the extension using a bolt that screws into the top from the bottom.

    - Stan

  10. #10
    Senior Member RobbieTunes's Avatar
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    I was thinking of the XA:
    DSCN6004.jpg



    I do like the Frog, too.
    DSCN6008.jpg
    Last edited by RobbieTunes; 05-14-14 at 06:10 PM.

    Robbie ♪♫♪...☻

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  11. #11
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    Quote Originally Posted by Scooper View Post
    Robbie, there's the attacco apribile, or "openable handlebar stem" from the mid-eighties that hinged at the front and had a bolt that secured the hinged top to the bottom of the extension using a bolt that screws into the top from the bottom.

    I am not fond of that stem as it just feels squishy when you are out of the saddle.

    There is another too, but you don't see it very often, in profile there is a "keyhole" shape, a slot extends behind the bar port and the bolt clamps the two sides of the slot area together trapping the bar.
    1E?

    Personally I like the 1A, in both versions with the allen key and the earlier version with the nutted closure. The two 1R stems I have are from complete bike purchases where the bike was so equipped.

  12. #12
    Senior Member Eric S.'s Avatar
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    Those old stems do flex when cranking out of the saddle, but modern stems are not fun to look at out on the road.

    I've had Cinelli XA stems on two bikes for years and love the elegance. A little flex is worth it to beautify the bike.

  13. #13
    Decrepit Member Scooper's Avatar
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    Robbie, the first one looks a little like the Modolo on my '87 Paramount, but the scarf is flipped.

    - Stan

  14. #14
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    Quote Originally Posted by Scooper View Post
    Robbie, the first one looks a little like the Modolo on my '87 Paramount, but the scarf is flipped.

    Did not Modolo have to recall a bunch of one design due to fracturing? I never fully referenced which type was a problem.

  15. #15
    Senior Member RobbieTunes's Avatar
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    I had a black Modolo like that, or rather, a very dark brown one, and a very light Modolo bar to go with it (260g). I could not get used to looking down at that huge slot and picturing my jaw hitting it as it broke.

    Flex? Yeah, last time I won Paris-Roubaix, the stem flex, the bar flex, and the BB flex really bothered me, so I threw my '85 Merckx into some French river and bought a new R5.

    Robbie ♪♫♪...☻

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  16. #16
    Senior Member Chombi's Avatar
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    Quote Originally Posted by Scooper View Post
    Robbie, there's the attacco apribile, or "openable handlebar stem" from the mid-eighties that hinged at the front and had a bolt that secured the hinged top to the bottom of the extension using a bolt that screws into the top from the bottom.

    I believe this was called the "Domino" stem?
    IIRC, it had problems with cracking, especially when people put not quite the right diameter bar in it by mistake. They usually find out too late wihen the thing cracks apart as they are tightening the clamping bolt.....

  17. #17
    Senior Member RobbieTunes's Avatar
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    I like the cool drawings, by the way.
    Not a lot of them around these digital days.

    Robbie ♪♫♪...☻

    Perhaps you didn't really hear what you thought I said...
    ...or maybe you did, and that's why you're so mad.


    1979 Centurion Semi Pro
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  18. #18
    Senior Member Grand Bois's Avatar
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    Wasn't there a French version?

  19. #19
    Senior Member cyclotoine's Avatar
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    Quote Originally Posted by Scooper View Post
    Here's the 1R clamping system.

    Note you must use the Cinelli allen key or it will explode. JK...

    1R's had alloy bolts also to shave weight. The 1st gen ones had patent stamps on the underside and the button said CINELLI in block letters instead on the flying C. Also the Cinelli Milano Oval logo on top. They are worth a good sum.

    There were also 3A stems (even more drop) but they are extremely rare.

    Quote Originally Posted by repechage View Post
    Did not Modolo have to recall a bunch of one design due to fracturing? I never fully referenced which type was a problem.
    Yes they did.

    Scooper, monitor it closely for cracking around the bolt. I had one in great shape. Sure enough... cracked. retired now.
    1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear

  20. #20
    Senior Member cyclotoine's Avatar
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    Quote Originally Posted by Grand Bois View Post
    Wasn't there a French version?
    Yes, at first the drilled a little divot below the insertion line to denote french sizing.
    1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear

  21. #21
    Senior Member himespau's Avatar
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    I have a 1R (I think), that I just prefer the look of to more traditional designs. I also had an easier time getting bars through it. I have a couple more that are kind of beat up and missing a bolt or expander, but I really like the design. The 26.4 sizing is a bit of a limitation though.
    Punctuation is important. It's the difference between "I helped my uncle, Jack, off a horse" and "I helped my uncle Jack off a horse"


  22. #22
    Senior Member Eric S.'s Avatar
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    Quote Originally Posted by himespau View Post
    I have a 1R (I think), that I just prefer the look of to more traditional designs. I also had an easier time getting bars through it. I have a couple more that are kind of beat up and missing a bolt or expander, but I really like the design. The 26.4 sizing is a bit of a limitation though.

    I'm running a 26.0 XA with 26.4 66-44 bars on one of my bikes. It's the one I'd call my "show bike", so I don't ride it like I'm in a TdF sprint.

    On Sheldon's site this text appears concerning the 25.8mm bar diameter - "Unofficial in-between size used by some Italian handlebar makers for handlebars designed to be usable in either ISO (25.4) or Italian (26.0) size stems."

    That leads me to believe that those 1/10s of millimeters are not that big a deal.

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