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Old 02-29-08, 12:22 PM   #1
jfmckenna
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Is There Such a Thing as This Quill Stem?

I have several stems laying around and none that will fit this darn fork/bar combination. It measures 21.1mm or .083in in diameter. I have a stem that fits the fork but not the bars. I need 26mm clamp preferably a front loading clamp.

So does a front loading quill stem with a 21.1mm diameter shaft and a 26mm clamp exist?

If so do you know where I can get one?

Regards.
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Old 02-29-08, 01:14 PM   #2
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What does the 21.1mm measurement apply to? How did you measure it?

The quill diameter of quill stems for 1" steerers usually measures 22.x mm. Could your measurement be off 1mm? The nominal diameter refers to the outside diameter of the steerer, so try measuring this.

Unless this is a very strange bike, i would bet the steerer is 1". Quill stems for 1" steerer and 26mm clamp are probably the most common type of quill stem. For maximum stem selection, you can also get an adapter that converts 1" quill to 1 1/8" threadless. Jensonusa has these.

If i am wrong, and it is not a 1" steerer, then your options will be very limited.
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Old 02-29-08, 01:24 PM   #3
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21.1 is not the most common size, but it's not unheard of. I'm not sure about the 26.0 clamp though, you might be stuck running mtb or cruiser bars.

Or, you could get a new fork and stem of course.
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Old 02-29-08, 01:26 PM   #4
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Nafun I measured it with callipers. I've googled around a bit and have seen others w/ 21.1 as well and yes this is the diameter. It is indeed a 1 inch threaded fork. The bike is a Cervelo Eyre with an Easton Fork. I have a whole bunch of quill stems lying around and the only one that will fit it is the one that came with it only it does not have the 26mm clamp, it's smaller then that .

Good idea on the threaded conversion.

I've also heard some people will sand down a slightly larger stem to fit.
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Old 02-29-08, 01:27 PM   #5
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Originally Posted by nafun View Post
What does the 21.1mm measurement apply to? How did you measure it?

If i am wrong, and it is not a 1" steerer, then your options will be very limited.
Old Schwinn's, old BMX and some road bike forks have inside diameters that are 21.1mm on 1" threaded fork. The headset is also different.

I don't know much about the clamp diameter. You could try prying apart(big screw driver) the clamp on a 25.4 stem and see if you can make it work.

I doubt you find the combo you seek, 21.1 is old and front loading 26 is new
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Old 02-29-08, 01:30 PM   #6
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Originally Posted by nafun View Post
What does the 21.1mm measurement apply to? How did you measure it?

The quill diameter of quill stems for 1" steerers usually measures 22.x mm. Could your measurement be off 1mm? The nominal diameter refers to the outside diameter of the steerer, so try measuring this.

Unless this is a very strange bike, i would bet the steerer is 1". Quill stems for 1" steerer and 26mm clamp are probably the most common type of quill stem. For maximum stem selection, you can also get an adapter that converts 1" quill to 1 1/8" threadless. Jensonusa has these.

If i am wrong, and it is not a 1" steerer, then your options will be very limited.
There were older Schwinns and BMX bikes with 21.15mm (.833") stems but I believe they were never made for European size (26.0 mm) bars.

You might try a shop that specializes in BMX bikes. You can probably find a stem with a removable face plate but I expect 26 mm is a lost cause.
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Old 02-29-08, 01:34 PM   #7
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Here is your adapter. Slips in your fork like quill and then you can use any threadless stem
http://www.cyclepath.ca/products/item1327.htm
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Old 02-29-08, 01:53 PM   #8
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Sweet! You guys rock! That adapter is probably the best solution. Many thanks.
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