Chain line query
Mike Howarth
Posts: 75
Early in the week I posted regarding replacing a crank set due to a set of knackered pedal threads.
Fairly straightforward I thought, until I realised there are alot of different chainlines since I were riding a bike as a whipper snipper.
Having done some measurements I need to run a 49mm chainline, however I was wondering whether this is actually a standard size?
From reading around chainlines I've only seen 47.5mm and 50mm mentioned, for instance if I was to buy a crankset with a 47.5mm chainline I'm guessing this would sit too close to my frame and 50mm would present problems in the derailleur.
Ultimately I'm guessing 47.5mm chainlines are geared towards 9 speed bikes, am I along the right track?
Fairly straightforward I thought, until I realised there are alot of different chainlines since I were riding a bike as a whipper snipper.
Having done some measurements I need to run a 49mm chainline, however I was wondering whether this is actually a standard size?
From reading around chainlines I've only seen 47.5mm and 50mm mentioned, for instance if I was to buy a crankset with a 47.5mm chainline I'm guessing this would sit too close to my frame and 50mm would present problems in the derailleur.
Ultimately I'm guessing 47.5mm chainlines are geared towards 9 speed bikes, am I along the right track?
0
Posts
if your current is 49 then you need to find a crankset that gives that chainline with the bb axle length that you have.
And wrong track. it is more to do with frame design.
Parktools :?:SheldonBrown
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Parktools :?:SheldonBrown