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==Die Kette reinigen== | ==Die Kette reinigen== | ||
Es gibt mehrere Ansätze, wie man seine Kette reinigen kann. Keine ist allerdings vollkommen zufriedenstallend. | Es gibt mehrere Ansätze, wie man seine Kette reinigen kann. Keine ist allerdings vollkommen zufriedenstallend. Drei Ansätze scheinen allerdings recht erfolgversprechend zu sein. | ||
Der klassische Weg, eine Kette zu reinigen, ist es, sie zu demontieren und in Lösungsmittel zu baden und zu schrubben. Dies ist allerdings bei neueren Ketten problematisch. Verbesserte Ritzel und Kettenblätter - wie zum Beispiel [[Shimano]]s [[Hyperglide]] System ermöglichen es, unter Volllast zu schalten, was die Kette extrem belastet. Bei älteren Systemen war der Fahrer gezwungen, beim Schalten Kraft vom Antriebssystem zu nehmen. | #Der klassische Weg, eine Kette zu reinigen, ist es, sie zu demontieren und in Lösungsmittel zu baden und zu schrubben. Dies ist allerdings bei neueren Ketten problematisch. Verbesserte Ritzel und Kettenblätter - wie zum Beispiel [[Shimano]]s [[Hyperglide]] System ermöglichen es, unter Volllast zu schalten, was die Kette extrem belastet. Bei älteren Systemen war der Fahrer gezwungen, beim Schalten Kraft vom Antriebssystem zu nehmen.<br><br>Um diesen hohen Belastungen stand zu halten, sind die Nieten moderner Ketten genauer in die Laschen der Ketten eingepasst. Die neue Niete sind schwerer aus- und einzubauen, ohne de Niete oder Laschen zu beschädigen. Die dünneren Laschen von 9-fach (und höheren Gangzahlen) Ketten verschlimmern dieses Problem nur noch.<br><br>[[Bild:Powerlink.gif|right|SRAM Powerlink]]<br>Falls Du Deine Kette gewohnheitsmäßig vom Fahrrad abmontierst, um sie zu reinigen, solltest Du einen [[Master Link]] (s. Bild rechts) erwerben und in Deine Kette einsetzen. Bei [[SRAM]]-Ketten werden sie mitgeliefert. Das erlaubt das Abbauen und wieder Einbauen der Kette, ohne einen Niet auspressen zu müssen. Wenn Du Dir die Niete des Powerlinks genauer ansiehst, kannst Du auch [[Kettenverschleiß]] mit den Augen wahrnehmen. Das funktioniert natürlich nur, wen Du den neuen Powerlink in eine neue Kette einsetzt, weil dann alle Kettenglieder die gleiche Länge haben.<br><br>Der Powerlink für 7- oder 8-fach Ketten passt perfekt zu SRAM und Shimano (evtl. auch bei anderen Marken). Der 9-fach Powerlink funktioniert zuverlässig bei SRAM Ketten, bei Shimanoketten kann der Powerlink aber zu Springen der Kette führen.<br><br>Das 1ß-fach [[Powerlock]] (man beachte dn anderen Namen) ist ein Wegwerfartikel. Durch die Möglichkeit, es nur einmal zu verwenden, hat man unnötige mehrfache Ausgaben. Zudem ist der Ersatz Powerlock kürzer als die restlichen Kettenglieder, was zu einem merkbaren "Klick" führt, wenn das Powerlock auf Ritzel bzw. Kettenblatt aufgenommen wird. Daher ist man mit 9-fach (oder weniger) in Bezug auf Masterlinks perfekt bedient.<br><br>You can easily remove a PowerLink by placing the jaws of a needle-nose pliers diagonally across the link to press the side plates out of position. You can use larger-jaw pliers if you form a "Z" of chain links with the PowerLink as the diagonal part. This is easiest if the chain is hanging slack. Park Tool also has a special tool for PowerLink removal, and this is easiest of all.<br><br>Shimano chains 9-speed and up are only reattachable by inserting a special. new link pin, using a special tool -- John Allen]<br><br>I used to use a parts cleaning tank and a toothbrush to clean chains, but Zaven Ghazarian, an excellent mechanic I used to work with, came up with a better system: drop the chain into a plastic Coke bottle with a couple of ounces of un-diluted citrus degreaser, cap it, and shake thoroughly. Fish the chain out with a spoke, rinse in water, and you are all set! (I am told that Pepsi bottles also work, and are easier to remove the chain from, because they have a wider mouth...but I'm a Coke guy, not a Pepsi guy.)<br><br>[A note from John Allen: I tried this. One part of the chain got twisted into a little loop inside the bottle, and I had to cut the mouth of the bottle open to get the chain out. I'm glad it was a plastic bottle! Use a bottle with a mouth at least two inches across.] | ||
#chain cleaning toolThe other major way to clean chains is with an on-the-bike cleaning machine. These are boxes which clip over the lower run of chain. They contain brushes and rollers that flex the chain and run it through a bath of solvent.<br><br>The off-the-bike approach has the advantage that it usually uses more solvent than will fit into an on-the-bike cleaning machine. Thus, it can dilute away more of the scuzz from the chain.<br><br>Chain cleaning brush[But it drips solvent all over the sprockets, and besides, they probably also need cleaning, which is easier with the chain removed. Park Tool makes a special brush to clean prockets, with a toothed hook on the other end to extract grunge from between the sprockets -- John Allen].<br><br>The on-the-bike system has the advantage that the cleaning machine flexes the links and spins the rollers. This scrubbing action may do a better job of cleaning the innards. | |||
Um diesen hohen Belastungen stand zu halten, sind die Nieten moderner Ketten genauer in die Laschen der Ketten eingepasst. Die neue Niete sind schwerer aus- und einzubauen, ohne de Niete oder Laschen zu beschädigen. Die dünneren Laschen von 9-fach (und höheren Gangzahlen) Ketten verschlimmern dieses Problem nur noch. | #[Another note from John Allen: Want to get a chain really clean? Here's one way.<br><br>It has to be a modern 4-unit chain, as Sheldon recommends, so liquids can easily flow through it. Take it off the bicycle, and first wash it in solvent in a bottle, with a toothbrush, whatever. Then coil it up so it makes a single layer in the bottom of an old stainless steel or aluminum frying pan. (Don't use a cast-iron skillet for this job: you would remove the layer of hardened oil that keeps it from rusting.) A 6-inch pan is big enough for a typical chain. Pour in a heavy concentration of dishwashing detergent in water, and boil the chain. Boiling will liquefy congealed lubricant and wash it out of the chain. If you're a real fanatic, turn the chain over and do this again with it lying on its other side. Spill the liquid out and repeat with clean rinse water. Spill that out and cook the chain dry in the bottom of the pan until the water boils out of it, so it doesn't rust. Then relubricate. This is a smelly procedure and you probably want to do it on a hot plate outdoors rather than on your kitchen stove.<br><br>Now, if you had that special grease which chain manufacturers use, you could heat it up in the pan and it would liquefy and flow into the chain links -- same idea as when waxing the chain.] | ||
[[Bild:Powerlink.gif|right|SRAM Powerlink]] | |||
Falls Du Deine Kette gewohnheitsmäßig vom Fahrrad abmontierst, um sie zu reinigen, solltest Du einen [[Master Link]] (s. Bild rechts) erwerben und in Deine Kette einsetzen. Bei [[SRAM]]-Ketten werden sie mitgeliefert. Das erlaubt das Abbauen und wieder Einbauen der Kette, ohne einen Niet auspressen zu müssen. Wenn Du Dir die Niete des Powerlinks genauer ansiehst, kannst Du auch [[Kettenverschleiß]] mit den Augen wahrnehmen. Das funktioniert natürlich nur, wen Du den neuen Powerlink in eine neue Kette einsetzt, weil dann alle Kettenglieder die gleiche Länge haben. | |||
You can easily remove a PowerLink by placing the jaws of a needle-nose pliers diagonally across the link to press the side plates out of position. You can use larger-jaw pliers if you form a "Z" of chain links with the PowerLink as the diagonal part. This is easiest if the chain is hanging slack. Park Tool also has a special tool for PowerLink removal, and this is easiest of all. | |||
Shimano chains 9-speed and up are only reattachable by inserting a special. new link pin, using a special tool -- John Allen] | |||
I used to use a parts cleaning tank and a toothbrush to clean chains, but Zaven Ghazarian, an excellent mechanic I used to work with, came up with a better system: drop the chain into a plastic Coke bottle with a couple of ounces of un-diluted citrus degreaser, cap it, and shake thoroughly. Fish the chain out with a spoke, rinse in water, and you are all set! (I am told that Pepsi bottles also work, and are easier to remove the chain from, because they have a wider mouth...but I'm a Coke guy, not a Pepsi guy.) | |||
[A note from John Allen: I tried this. One part of the chain got twisted into a little loop inside the bottle, and I had to cut the mouth of the bottle open to get the chain out. I'm glad it was a plastic bottle! Use a bottle with a mouth at least two inches across.] | |||
chain cleaning toolThe other major way to clean chains is with an on-the-bike cleaning machine. These are boxes which clip over the lower run of chain. They contain brushes and rollers that flex the chain and run it through a bath of solvent. | |||
The off-the-bike approach has the advantage that it usually uses more solvent than will fit into an on-the-bike cleaning machine. Thus, it can dilute away more of the scuzz from the chain. | |||
Chain cleaning brush[But it drips solvent all over the sprockets, and besides, they probably also need cleaning, which is easier with the chain removed. Park Tool makes a special brush to clean prockets, with a toothed hook on the other end to extract grunge from between the sprockets -- John Allen]. | |||
The on-the-bike system has the advantage that the cleaning machine flexes the links and spins the rollers. This scrubbing action may do a better job of cleaning the innards. | |||
[Another note from John Allen: Want to get a chain really clean? Here's one way. | |||
It has to be a modern 4-unit chain, as Sheldon recommends, so liquids can easily flow through it. Take it off the bicycle, and first wash it in solvent in a bottle, with a toothbrush, whatever. Then coil it up so it makes a single layer in the bottom of an old stainless steel or aluminum frying pan. (Don't use a cast-iron skillet for this job: you would remove the layer of hardened oil that keeps it from rusting.) A 6-inch pan is big enough for a typical chain. Pour in a heavy concentration of dishwashing detergent in water, and boil the chain. Boiling will liquefy congealed lubricant and wash it out of the chain. If you're a real fanatic, turn the chain over and do this again with it lying on its other side. Spill the liquid out and repeat with clean rinse water. Spill that out and cook the chain dry in the bottom of the pan until the water boils out of it, so it doesn't rust. Then relubricate. This is a smelly procedure and you probably want to do it on a hot plate outdoors rather than on your kitchen stove. | |||
Now, if you had that special grease which chain manufacturers use, you could heat it up in the pan and it would liquefy and flow into the chain links -- same idea as when waxing the chain.] | |||
==Ketten und Ritzelverschließ== | ==Ketten und Ritzelverschließ== |