| Regarding item #1, stem measures 22.2 & of course it is a 1” steer tube. Seemed unliked Riv would sell a stem for one of their bikes that was the wrong size, but worth checking for sure. Regarding item #2, I did remove & replace stem & it did not change. I remember reading that the minimum insertion point should be at or below the top of the head tube, not the top of the locking nut. Mine is 2cm below the top of the lock nut, so pretty close to the top of the head tube. Will told me the minimum insertion line could be at the top of the lock nut. I could drop it a few cm to see if the movement gets better, but then it would be too low for my comfort. Sent from my iPhone On Sep 6, 2023, at 3:28 PM, Ted W <ted.l.w...@gmail.com> wrote:
Couple of thoughts right off:
1. if you pull the stem out to the minimum insertion line and re-tighten it, does it still move? Sometimes, if you've inserted the stem too far, you may encounter this issue. It can be mitigated by getting a shorter stem or cutting the current one down a bit (advanced mode). 2. What's the inner diameter of the steerer and what's the outer diameter of the stem? There are different threaded headset standards. I've provided a summary below. It's possible you've wound up with a mistmatch: | Stem “neck” outer diameter – measurement units: mm (inches) | Standard name | | 21.15 (13/16″) | Old American and BMX standard | | 22 | Old French standard | | 22.2 (7/8″) | Standard for most threaded forks with an outer diameter of 25.4 mm (1″) | | 25.4 (1″) | Standard for most threaded forks with an outer diameter of 28.6 mm (1 1/8″) – not very common |
Greetings folks. I would appreciate any input regarding this. Since new I have had some movement in my headset / stem that concerns me, possibly unnecessarily so? Please review the attached video link and tell me what you see. I felt the headset was a bit loose so tightened it a bit. This made no difference. The minimum insertion line for the Faceplater stem is a full two centimeters below the headset lock nut. So, the question seems to be is this stem quill movement excessive & if so how to eliminate it. I do mind the inherent flex. It no doubt contributes to the comfort of the bike? I just want to be certain it is safe and causing no harm.I appreciate your help. Richard
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