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Ignoramus Stem Attachment Question

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Ignoramus Stem Attachment Question

Old 06-24-09, 01:23 PM
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ljholland
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Ignoramus Stem Attachment Question

When putting the stem onto the steerer tube, is there a proper way? If I tighten the bolt on top of the steerer it puts a lot of friction in the steering. Should it just be snug....and then the side bolts are tightened down? Like I said....ignoramus question.
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Old 06-24-09, 01:31 PM
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Tabor
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I think you are describing a threadless headset. Yes, you adjust the bearing preload with the top bolt. You want just enough tension to take out any slop without adding friction/gritty feel while turning. You should recheck the slop soon if it is a new headset, btw.
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Old 06-24-09, 01:34 PM
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Sounds threadless, so I'm going with that.

Yes, you are actually setting your headset at the same time you are installing the stem, so snug is right, then you tighten the side stem bolts. Consult https://parktool.com/repair/byregion....mageField2.y=9
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Old 06-24-09, 01:38 PM
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dabac
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Originally Posted by ljholland View Post
When putting the stem onto the steerer tube, is there a proper way?
Yes.

Originally Posted by ljholland View Post
If I tighten the bolt on top of the steerer it puts a lot of friction in the steering.
Then you've cranked down too hard on the top cap.

Originally Posted by ljholland View Post
Should it just be snug....and then the side bolts are tightened down?
Pretty much so. Some people lock the front brake up, rock the bike back & forth to check for play. Others crank down, then lift the front wheel to check for friction in the steering. If they don't find any they tighten the sides down and calls it a day.
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Old 06-24-09, 02:48 PM
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Panthers007
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Here are the exacting instructions for a Thomson stem. Note - the approach requires the torque be applied incrementally from bolt to bolt. Greasing the bolts is required before you attach them. Though this is for Thomson, the approach is a sound one for most stems:

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Old 06-24-09, 09:18 PM
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Thanks all!
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