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Kettenpflege: Unterschied zwischen den Versionen

120 Bytes hinzugefügt ,  4. Januar 2013
K (→‎Kettenverschleiß bestimmen: Abstzkorektur, Aufzählung richtig)
(→‎Kettenverschleiß bestimmen: Übersetzungsanfang)
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===Kettenverschleiß bestimmen===
===Kettenverschleiß bestimmen===
The standard way to measure chain wear is with a ruler or steel tape measure. This can be done without removing the chain from the bicycle. The normal technique is to measure a one-foot length, placing an inch mark of the ruler at the side of one rivet, then looking at the corresponding rivet 12 complete links away. On a new, unworn chain, this rivet will also line up exactly with an inch mark. With a worn chain, the rivet will be past the inch mark. [For accurate measurement, the chain should be held under some tension -- either on the bicycle, or hanging. Also, use a metal ruler or tape measure. Wood, plastic and cloth all can expand or shrink.-- John Allen]
Die Standardvorgehensweise, um den Kettenverschleiß zubestimmen benötigt entweder ein Lineal oder ein Stahlmaßband mit Zolleinteilung. Dazu muss man die Kette nicht vom Fahrrad demontieren. Man platziert eine Zollmarkierung des Messinstruments setlich ein einem Niet und zählt genau 12 ganze Kettenglieder (12 * 1 Zoll = 1 Fuß) ab. Bei einer neuen unverschlissenen Kette wird der korrespondierende Niet genau auf der 12 Zollmarkierung liegen. Bei einer verschlissenen Kette wird er jenseirs dieser Markierung liegen. Um genau messen zu können, benötigt die Kette Spannung. Das geht am besten am Fahrrad montiert oder in der Luft hängend. Auf jeden Fall sollte man ein Metalmessgerät benutzen, weil Holz, Kunststoff oder Gewebe sich in ihrer Länge zu stark verändern können.


This gives a direct measurement of the wear to the chain, and an indirect measurement of the wear to the sprockets. first, let's look at how to do this with a ruler that measures in inches.
Hierdurch erhält man ein direktres Maß des Ketten- und ein indirektes Maß des Ritzelverschleißes.


====Zollbasiertes Messen====
*If the rivet is less than 1/16" past the mark, all is well.
*If the rivet is less than 1/16" past the mark, all is well.
*If the rivet is 1/16" past the mark, you should replace the chain, but the sprockets are probably undamaged.
*If the rivet is 1/16" past the mark, you should replace the chain, but the sprockets are probably undamaged.
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*If the rivet is past the 1/8" mark, a new chain will almost certainly skip on the worn sprockets, especially the smaller ones.
*If the rivet is past the 1/8" mark, a new chain will almost certainly skip on the worn sprockets, especially the smaller ones.


====Metrisches Messen====
In metric measurement, 10 links of a new chain are 25.4 cm, or 15 links, 38.1 cm.
In metric measurement, 10 links of a new chain are 25.4 cm, or 15 links, 38.1 cm.


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*More than that, and a new chain will almost certainly skip on the worn sprockets, especially the smaller ones.
*More than that, and a new chain will almost certainly skip on the worn sprockets, especially the smaller ones.


====[[Kettenverschleißlehre]]n====
There are also special tools made to measure chain wear; these are a bit more convenient, though by no means necessary, and most -- except for the Shimano TL-CN40 and TL-CN41 -- are inaccurate because they allow roller play to confound the measurement of rivet-pin wear.
There are also special tools made to measure chain wear; these are a bit more convenient, though by no means necessary, and most -- except for the Shimano TL-CN40 and TL-CN41 -- are inaccurate because they allow roller play to confound the measurement of rivet-pin wear.


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