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Old 01-02-06, 07:00 PM   #1
falcon531
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older dura ace

I bought a pair of wheels that are dura ace hubs laced to mavic mach 2 ceramic rims.The rear hub in the picture has threads on the end of it so I'm thinking it is either a 6 or 7 speed hub. I don't suppose I can put a 8 or 9 speed casett on the hub can I? My road bikes are fairly new so they will easily take a 8-9 speed hub.
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Old 01-02-06, 07:03 PM   #2
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No, that is for a 5-6spd freewheel most likely, which threads on. Spacing of the hub is probably 126mm, modern bikes are 130mm. Your 8/9spd setup requires a freehub for the cassette to slide onto.

Freewheel:



Freehub/Cassette:

Last edited by seely; 01-02-06 at 07:09 PM.
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Old 01-02-06, 07:25 PM   #3
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Hey thanks for the pics. Mine is like the bottom one except it has threads on the end of the barell. So a casett slides onto mine but how can I tell what size casett.. such as 7, 0r 8? Thanks again.
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Old 01-02-06, 07:27 PM   #4
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I'm having a hard time with this "barrel" you speak of. Are you perhaps referring to threads inside the end of the freehub body, like where the lockring threads in to hold down the cassette? Either way, if you have a model # of the Dura-Ace hub, that is the fastest/easiest way to tell without measuring.
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Old 01-02-06, 07:28 PM   #5
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Quote:
Originally Posted by falcon531
I bought a pair of wheels that are dura ace hubs laced to mavic mach 2 ceramic rims.The rear hub in the picture has threads on the end of it so I'm thinking it is either a 6 or 7 speed hub. I don't suppose I can put a 8 or 9 speed casett on the hub can I? My road bikes are fairly new so they will easily take a 8-9 speed hub.
If it's a cassette hub, it can be upgraded to 8-/9-/10-speed by replacing the Freehub body. Unfortunately, the older (pre 1997, pre 9-speed) Dura-Ace hubs only accept Dura-Ace Freehub bodies, which are quite pricey.

See: http://sheldonbrown.com/dura-ace

and: http://sheldonbrown.com/k7

If you're not sure if it's a cassette or freewheel hub, see:

http://sheldonbrown.com/freek7

For a link where I can supply the body, and lend you the special tool, if it is a cassette Freehub, see:

http://www.bikeforums.net/showthread...41#post1992041

Sheldon "Jumping Through Hoops Trying To Help" Brown
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Old 01-02-06, 07:54 PM   #6
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I read through the articles and it appears the rear hub takes a cassett. It looks like it is the uniglide since there are threads where the smallest cog would screw on. Your article said replacement cassetts are hard to find. The rear hub then, either needs the modification or a newer hub. What does the modification cost? Your article said the wheel had to be redished. Seems like it might be easier to replace the hub?
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Old 01-02-06, 10:00 PM   #7
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Quote:
Originally Posted by falcon531
I read through the articles and it appears the rear hub takes a cassett. It looks like it is the uniglide since there are threads where the smallest cog would screw on. Your article said replacement cassetts are hard to find. The rear hub then, either needs the modification or a newer hub. What does the modification cost?
The last link I gave in the previous message links you to that information. I've been scolded by the moderator for putting direct links to stuff for sale in this forum, so I have to send you a roundabout way to the information you need.


Quote:
Originally Posted by falcon531
Your article said the wheel had to be redished. Seems like it might be easier to replace the hub?
No, it's MUCH easier to replace the body than to rebuild the whole wheel.

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Old 01-03-06, 12:45 PM   #8
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Look on the end of the freehub body. Some Shimano freehubs that have the Uniglide external threading also have the internal threading for a Hyperglide lockring. If yours does, it will likely be a 8/9-speed hub. My Ultegra hubs from the mid-90s have this "duality" but I don't know if Dura-ace ever did.
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Old 01-03-06, 12:56 PM   #9
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Quote:
Originally Posted by Gonzo Bob
Look on the end of the freehub body. Some Shimano freehubs that have the Uniglide external threading also have the internal threading for a Hyperglide lockring. If yours does, it will likely be a 8/9-speed hub. My Ultegra hubs from the mid-90s have this "duality" but I don't know if Dura-ace ever did.
No, this was never done in the Dura-Ace line.

It was not possible due to the smaller diameter of the Dura-Ace Uniglide thread.

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