Difficulty level: for professionals
Tool
- Hexagon socket spanner
- torque spanner
- fine saw
- saw gauge
- fine files
Auxiliary materials
- Carbon assembly paste
- Clear lacquer or two-component adhesive
- Cloth
Wrench tips for lowering road bike handlebars
Position Lowering the handlebars and mounting them with several spacers above the stem is a temporary solution that you should only ride until you have found your final position.
Stem Asymmetrically clamping stems and segment clamps can destroy the sensitive carbon stem. Stems with many cut-outs in the clamping area and those with a large hole towards the front of the stem are less suitable. The steerer tube may only be supported by a few millimetres at the top edge of the stem, which is not sufficient for a permanently secure clamping! Only use stems with symmetrical external clamping over the entire circumferential surface. The slot of the stem must be as narrow as possible. The clamping area of the stem or sleeve must be free of burrs.
Precision Carbon stems are sometimes manufactured imprecisely: The stem can only clamp reliably if the shaft does not have a pronounced seam from the manufacturing process, but is round and dimensionally accurate. The stem must be able to be pushed on firmly. Do not fit stems that have play on the stem.
Occupational safety Carbon dust is suspected of being carcinogenic. Therefore, always wear respiratory protection when sawing or filing carbon fibre. Do not blow away carbon dust, but wipe it off with a damp cloth.
The complete instructions - illustrated and described in detail - can be found below as a PDF download.
Downloads:
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