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Colnago with Campy components questions.

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Colnago with Campy components questions.

Old 04-29-19, 03:43 PM
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tsappenfield
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Colnago with Campy components questions.

Ten years ago, I purchased a 1984 Colnago Nuovo Mexico. My first question concerns the free wheel. Both hubs, front and rear wheel, are Campy Super Record hubs. What's weird is that the free wheel is a six cog Dura Ace free wheel. Probably not original equipment, but aren't Campy and Shimano components non-compatible? It has worked fine over the past decade. What's going on here? The second question concerns the chain which I want to replace. What chain should I choose?
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Old 04-29-19, 03:51 PM
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Freewheels are interchangeable as long as the threading matches: i.e. French threaded hub needs a French threaded freewheel, etc.

For a chain, get an 8-speed chain from KMC or Sram.
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Old 04-29-19, 04:02 PM
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It doesn't matter for friction, most anything goes. Early index systems is where things got complicated.
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Old 04-29-19, 05:59 PM
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They both said all there is to say.
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Old 04-29-19, 06:29 PM
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For freewheels, there are apparently a few common threadings.
https://www.sheldonbrown.com/freewheels.html

Italian 1.378" x 24 tpi 35 x 1.058 mm
ISO 1.375" x 24 tpi 34.92 x 1.058 mm
British 1.370" x 24 tpi 34.80 x 1.058 mm
French 1.366" x 25.4 tpi 34.7 x 1 mm

In general, the Italian, ISO, and British are "close enough", although running an old British freewheel on an Italian hub could be tight.

The French is different enough that it is a problem.

By the mid 80's, it is possible that Campagnolo was moving towards the ISO standard.
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Old 04-29-19, 07:31 PM
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Dura Ace freewheels are some of the nicer ones around and you will find them used often on all kinds of friction shift racing setups. Get an 8 speed KMC or SRAM chain for < $15 and you’re good to go.
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