Difference between revisions of "Stem Preparation"
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===Why=== | ===Why=== | ||
| − | Threadless headset systems require a nice sqare face to push against for proper function. | + | Threadless headset systems require a nice sqare face to push against for proper function. This is important for well engineered systems that use the Dia-Compe patent, but absolutely critical if using a poorly designed Chris King headset. |
| − | ===How===A simple madrel is made to fit a 1" collet and the 1.125" stem. I prefre to do all work with a collet if I can.<br> | + | Rarely is a cast or fabricated stem faced with any usable precision. The price point just doesn't justify it. You must do this yourself. Machined stems rarely require this treatement. |
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| + | ===How=== | ||
| + | A simple madrel is made to fit a 1" collet and the 1.125" stem. Steel is a good material since when spinning on the lathe the stem will create an unbalanced load. | ||
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| + | I prefre to do all work with a collet if I can. I prefer the speed of set-up and the precision.<br> | ||
[[Image:Stem face 1.jpg]]<br><br> | [[Image:Stem face 1.jpg]]<br><br> | ||
[[Image:Stem face 2.jpg]]<br><br> | [[Image:Stem face 2.jpg]]<br><br> | ||
Latest revision as of 02:11, 5 May 2007
Why
Threadless headset systems require a nice sqare face to push against for proper function. This is important for well engineered systems that use the Dia-Compe patent, but absolutely critical if using a poorly designed Chris King headset.
Rarely is a cast or fabricated stem faced with any usable precision. The price point just doesn't justify it. You must do this yourself. Machined stems rarely require this treatement.
How
A simple madrel is made to fit a 1" collet and the 1.125" stem. Steel is a good material since when spinning on the lathe the stem will create an unbalanced load.
I prefre to do all work with a collet if I can. I prefer the speed of set-up and the precision.
Very carefully spin the stem on the lathe. Take as little metal off as needed to get a nice face.
Always bag and lable specially made tools. Years later the tool will be clean, in good shape, and clearly marked.
