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Old 11-27-07, 09:30 PM   #1
fatigoworld
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hi ten 1020 tubing?

anyone know the lowdown on high tensile 1020 tubing? just picked up a vintage panasaonic with this tubing but seems on the heavy side. how does this tubing add up to columbus sl or reynolds 531? thanks...
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Old 11-27-07, 09:33 PM   #2
ken cummings
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High tensile anything generally means ordinary grade carbon steel. Weaker then special alloys so more is added, thus heavier. On the bright side it should be easily weldable.
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Old 11-27-07, 09:52 PM   #3
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There is a considerable weight difference: for example I have a 53 cm lugged frame in Columbus SL that weighs in at 4 pounds bare frame with no fork, bottom bracket or headset. A 53 cm Hi ten lugged frame came in at 7 pounds 2 oz. Don
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Old 11-27-07, 11:52 PM   #4
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do you have a pic of the panasonic? I have one too
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Old 11-28-07, 07:33 AM   #5
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Channeling sydney: Gas pipe.
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Old 11-28-07, 07:48 AM   #6
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I like Sheldon Brown's glossary entry for high-tensile tubing: "A fancy-sounding name for the ordinary tubing used to build cheap bicycle frames."

Neal
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Old 11-28-07, 09:16 AM   #7
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Back in the day (70s, 80's) when "chromoly" tubing was "nice", steel frame material was identified by its properties (percentage of alloys in the steel).

normal steel: 1020
chromoly steel: 4130

Chrome Molybdenum (sp ?).

The numbers are like the Ti numbers (3-2.5 or 6-4) which also refer to alloying elements in the Ti (pure Ti is best for burning and making into white paint pigment, it's not very good for bike frames). I dunno what the steel numbers actually refer to.

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Old 11-28-07, 09:45 AM   #8
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Alloying of steels.
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