Französische Fahrräder: Unterschied zwischen den Versionen

AVA Death Stem

Many higher-quality French bicycles of the '70's came with AVA brand bars and stems. These have a reputation for failure, and should be replaced.

French stems differ both in the size that fits into the steerer, and the size of the part that clamps on to the handlebar. Thus, if you want to replace the handlebars on a French bicycle, you will probably also need to replace the stem.

French stems are 0.2mm narrower than others where they fit into the steering column. A standard 7/8" / 22.2mm stem won't usually fit. In many cases, the limiting factor for fitting the stem in will be the headset locknut, rather than the steerer itself. Try removing the locknut before sanding down a stem. If the headset locknut is slightly tighter than the steerer, it can be enlarged easily with a small grinding wheel.

In cases where the stem really won't fit into the steerer, a few minutes' work on the stem with sandpaper will usually do the trick. Wrap the sandpaper around the stem, grip it with your hand, and turn the stem round and round until it fits. You only need to remove 0.1 mm, which is 1/250", not much at all! [This needs to be a quill-type stem, which inserts into the steerer tube, and an aluminum alloy stem, not a steel one -- from which you would be removing chrome plating, leaving it vulnerable to rust. Another approach is to replace the fork and the headset with ones with standard British/ISO dimensions. This is possible, as French head tube bearing race dimensions are 30.2mm, the same as British. You could use a standard 22.2 mm quill stem, or a threadless headset and a 1-inch Aheadset-type stem. Also, an adapter is available as of 2014 to fit a 1 1/8" Aheadset-type stem to a French fork.-- John Allen]

If you convert from a French stem to a standard one, you will also need to replace the handlebars, which are a different diameter.

[[Kategorie:2008]]