Technical & Reference Section > Tech and Restoration

Correct DK stem quill measurement ?

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snoopy72:
Now aren't stem quills supposed to be 21.1mm ?,  i have a DK square pro stem that is like new, so no wear, it measures 20.8mm, not unlike a seat post will 0.3mm make any difference when it's the wedge that tightens it ?
just would have been happier with the 21.1mm before tightening.
Don't get me wrong it tightens ok but are other DK stems this size or do i have myself a Friday afternoon stem ?

Gnarlyscoots:
What size is the wedge buddy? Is it a short wedge or a long wedge?

snoopy72:
The quill is about 4 1/2 inches long and has dk's trade mark alloy wedge , quite long

Gnarlyscoots:
That sounds about right buddy. I think the early DK quills are like that so you could use them on anything, including mini builds, as the stem is quite thin and not very long on a standard.

It will be fine when tightened though. If you are woriied and like to run the stem a little high off the headset, you could always use a stem stiffener  :daumenhoch:

snoopy72:
Probably just being a bit paranoid, i'm running a 6mm stem stiffner which has been made a snug fit at 20.8mm , your right in the length of stem quill being about an inch shorter than any other stem though but iI thought dk made mini stems as well ?
It may just be a machining error, ideally need to measure another dk quill.
Thanks Terry for your reply :daumenhoch:

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