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A stem without a bolt?

Old 05-15-09, 01:41 PM
  #1  
prof2k
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A stem without a bolt?

I got it off. see post #53 for pics

So I have no idea how to remove the stem from this bike. It's on an early 70s nishiki. The only thing I can think might work is that I have to remove the brake and stick some sort of screwdriver up the steer tube.

Has anyone seen a stem like this before?

Last edited by prof2k; 05-19-09 at 07:12 PM. Reason: update
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Old 05-15-09, 01:53 PM
  #2  
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Is it one of those stems that uses the Fe2O3 binding technology?
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Old 05-15-09, 02:36 PM
  #3  
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Is there a small hex key in that little hole ? (might be an adjuster) gotta admit-aint ever seen the like !
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Old 05-15-09, 02:45 PM
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Originally Posted by yepyep View Post
Is it one of those stems that uses the Fe2O3 binding technology?
Or maybe Al203.
I think they pretty much assumed she'd tighten right up the first night she was left outside in the yard.
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Old 05-15-09, 02:47 PM
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I'm thinking an allen key inside the bar opening....
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Old 05-15-09, 03:26 PM
  #6  
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Maybe it's somehow integrated with the headset? Have you tried loosening the headset? I highly doubt it but you never know.
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Old 05-15-09, 03:35 PM
  #7  
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Maybe an expander bolt accesible from the bottom of the steerer?
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Old 05-15-09, 03:46 PM
  #8  
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LOL we're all just taking guesses. Wizardry. Use wizardry.


I haven't seen one like it. Please tell us how it works when you figure it out.
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Old 05-15-09, 03:50 PM
  #9  
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loosen the headset, then grab hold of it and try to "unscrew" it? like the stem itself was the head of a bolt? that does look weird.
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Old 05-15-09, 07:08 PM
  #10  
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Boy, this is a good one. Can't say that I have ever seen a stem like this without a top opening for a vertical stem and expander wedge. There has got to be a way to loosen it to remove it, but I can't say that I know how. Cinelli had a stem sort of like this in the 70's, but the stem cap was removeable so you could tighten the stem and handlebar bolt. Wow !!
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Old 05-15-09, 07:32 PM
  #11  
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Originally Posted by Reynolds View Post
Maybe an expander bolt accesible from the bottom of the steerer?
That would be my guess, also. But holy non-adjustable stem, Batman! You practically have to disassemble the bike to get at it!
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Old 05-15-09, 07:38 PM
  #12  
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Have you tried using the Force?
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Old 05-16-09, 03:27 AM
  #13  
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would an "OXY" be overkill ?
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Old 05-16-09, 05:32 AM
  #14  
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Originally Posted by miamijim View Post
i'm thinking an allen key inside the bar opening....
+1.
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Old 05-16-09, 09:50 AM
  #15  
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I actually remember seeing stems like that "back in the day", and it never occurred to me really to wonder how it was loosened.

There must be someone out there who knows. These things weren't common, but they weren't so rare, either, I don't think.
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Old 05-16-09, 09:58 AM
  #16  
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Any chance of more pics from various angles?
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Old 05-16-09, 10:04 AM
  #17  
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Remove front wheel + look up the steerer tube; that's where my money is. Unless there's a hole in the front of the thing, there's no way that a hex key could be used through the bar opening, and besides: what idiot would make a stem that couldn't be adjusted without removing the bars?

That small hole in the rear of the stem shaft is sort of interesting -- wonder what could its purpose be?
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Old 05-16-09, 01:31 PM
  #18  
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Is it me, or does it look like it has a seam halfway down the stem? Could the stem be two pieces? I was wondering if the hole had a screw that held the top piece onto the bottom part of the stem. If there is a screw, perhaps it will uncover the adjustable part of the stem??? Maybe I am crazy though. I have never seen anything like that.

I'm not sure if anyone would understand what I am talking about either.
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Old 05-16-09, 04:33 PM
  #19  
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clamp the head tube in a vise, remove the wheel, stick a steel rod into the bottum of the steer tube, bang the He\\ out of it with a framing hammer. I know that aint right but now I can get daily updates
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Old 05-16-09, 04:48 PM
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Now I have seen it all for sure! It has to be that you loosen something fron up throuigh the fork crown.
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Old 05-16-09, 05:06 PM
  #21  
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Originally Posted by tolfan View Post
clamp the head tube in a vise, remove the wheel, stick a steel rod into the bottum of the steer tube, bang the He\\ out of it with a framing hammer. I know that aint right but now I can get daily updates
With the expanding bits still in there wouldn't hammering on it in that fashion actually make it harder to remove?
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Old 05-16-09, 05:32 PM
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Originally Posted by mcgreivey View Post
There must be someone out there who knows.
http://www.bikeforums.net/showpost.p...73&postcount=5
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Old 05-16-09, 06:30 PM
  #23  
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Wow, that is strange. I have no clue, but will check back.


BTW my bet would be on T-Mar or DirtDrop knowing the answer
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Old 05-16-09, 07:36 PM
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I'm often a reckless bettor for small amounts. I have $5 that says the fastener is not to be found inside the bar clamp. Acceptable, Jim?
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Old 05-16-09, 07:39 PM
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Originally Posted by Charles Wahl View Post
I'm often a reckless bettor for small amounts. I have $5 that says the fastener is not to be found inside the bar clamp. Acceptable, Jim?
Your on....$5 it is.

Seriously though. I think I see the smallest hint of an opening in the front, perhaps a small cap is popped off. Insert a long allen key and your good to go.
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