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Shimano 105 crankset

Old 04-21-05, 07:14 PM
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canuckbiker
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Shimano 105 crankset

Does anyone know the approximate age of a Shimano 105 FC-1055 crankset with 52-42 SG chainrings?
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Old 04-22-05, 01:28 PM
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Look for the 2 letter code stamped on the crank arm and check against this...
http://www.sheldonbrown.com/shimano.html
Down at the bottom there's an explanation of the codes.
Should be early 90's I'm guessing.
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Old 04-23-05, 01:28 AM
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Originally Posted by canuckbiker
Does anyone know the approximate age of a Shimano 105 FC-1055 crankset with 52-42 SG chainrings?
is the 105chainring noT circular?
have check with LBS ,said is design to this shape to give extra cranking power.
Any Expert can further elaborate.
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Old 04-23-05, 03:06 AM
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The FC-1055 crankset was available from 1991 to 1992. It was replaced by the FC-1056 in 1993.
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Old 04-23-05, 11:32 AM
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Originally Posted by Lew
is the 105chainring noT circular?
have check with LBS ,said is design to this shape to give extra cranking power.
Any Expert can further elaborate.
No, it's not biopace.
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Old 04-24-05, 12:14 AM
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Originally Posted by canuckbiker
No, it's not biopace.
my chainring have a biopace-SG triangle label on it.
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Old 04-24-05, 01:19 AM
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Originally Posted by Lew
my chainring have a biopace-SG triangle label on it.
Yours might have belonged to an FC-1050 crankset which came with Biopace chainrings. The FC-1055 came with round chainrings.
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Old 04-24-05, 08:48 PM
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Originally Posted by khuon
Yours might have belonged to an FC-1050 crankset which came with Biopace chainrings. The FC-1055 came with round chainrings.
Pardon me,wat is Biopace?
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Old 04-24-05, 08:51 PM
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Originally Posted by Lew
Pardon me,wat is Biopace?
In case you're not being facetious...

http://www.sheldonbrown.com/biopace.html
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Old 04-24-05, 10:24 PM
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I have an FC-1051 with the much humbled about Biopace outer ring. I know thats from '88 so yours would be 4 years later i suspect.
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