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dérailleur arrière
#3
Moi j'ai pris une longue

Je sais ça t'aide pas Big Grin

Sinon j'ai trouvé ça sur Probikeshop:

Quelle longueur de chape choisir ?
[Image: derailleur-VTT-schema-longueur.jpg]Il existe trois longueurs de [i]chape*[/i] : courte, moyenne et longue. Plus la chape est courte, plus elle est réactive et résistante. D'une manière générale, on préconise une chape longue pour les transmissions triples ou pour des doubles avec une cassette VTT dont la denture est importante.
 
Une fois que vous avez vérifié la compatibilité, il faut trouver la longueur de chape qui correspond. Celle-ci est déterminée par le nombre de vitesses et les dentures de votre transmission (cassette et plateaux VTT).
 
Pour SHIMANO, on devra se reférer à la [i]capacité*

[/i], calculée ainsi : (Denture maximum cassette – Denture minimum cassette) + (Denture maximum plateau – Denture minimum plateau). Par exemple, avec une cassette 11/36 et un pédalier 26/36, on calculera (36-11)+(36-26) = 35. Il vous faudra alors un dérailleur avec une capacité de 35.
 
Pour SRAM, on se doit de consulter le tableau de compatibilité de la marque.
 
Alors, veillez simplement à choisir un dérailleur compatible avec vos commandes de vitesses et doté d’une chape* en adéquation avec votre transmission.
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Messages dans ce sujet
dérailleur arrière - par fred - 18-05-2022, 21:35
RE: dérailleur arrière - par corref - 19-05-2022, 07:10
RE: dérailleur arrière - par Bruno 29-74 - 19-05-2022, 20:36
RE: dérailleur arrière - par cedric - 20-05-2022, 04:25
RE: dérailleur arrière - par fred - 20-05-2022, 06:36

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