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Shimano Hub Goodness

Old 10-15-19, 08:09 AM
  #1  
jamesdak 
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Shimano Hub Goodness

Still cleaning up some recently acquired parts and thought I'd share this pic. Three sets of really nice looking old hubs.

Shimano Tricolor 6400 series in very good condition
Dura Ace 7403 series in almost mint condition
Dura Ace 7700 series, NOS in boxes.

I have to figure out what tools I need for that odd 7403 one.


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Old 10-15-19, 11:09 AM
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Pretty!
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Old 10-15-19, 11:37 AM
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Very nice!!!!

I have 2-3 sets of 6400 hubs that I got in a lot.

Need to check the bearings and build a rear wheel around one of them.
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Old 10-15-19, 11:55 AM
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I'm sure you know this, but that 7403 freehub is practically unobtanium. 7401 freehubs/hubsets are a lot more common, but the 7403 will take a Shimano 10 speed cassette. I have a 12-30 on my 7400-series hub using the 7403 freehub.

The only nuisance is that you have to do all of your preload work on the NDS, because the freehub is longer than the 7401 models and the cone and locknut can't be reached from the drive side.
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Old 10-15-19, 02:45 PM
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Nice.
That middle set is either 7401 (6 or 7 speed, 126OLD) or 7402 (8 speed, 130OLD). Both are UG only.
7403's take either UG or HG and the threaded outside end does not have the reduced diameter.
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Old 10-15-19, 04:13 PM
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You guys made me go back and do some more research. Lot's of mis-identified freehubs on the internet as I found several listed as 7403 like mine and I figured that's what it was. Finally pulled of the Shimano document on the 7402 and it's a match. @rccardr you win the prize!
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Old 10-16-19, 07:30 AM
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Originally Posted by rccardr View Post
Nice.
That middle set is either 7401 (6 or 7 speed, 126OLD) or 7402 (8 speed, 130OLD). Both are UG only.
7403's take either UG or HG and the threaded outside end does not have the reduced diameter.
Beat me to it.
I lucked into a 7403 freehub body on the 'Bay and swapped it onto a 7400 hub. That'll confuse someone in the future!

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Old 10-17-19, 02:10 PM
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Originally Posted by jamesdak View Post
You guys made me go back and do some more research. Lot's of mis-identified freehubs on the internet as I found several listed as 7403 like mine and I figured that's what it was. Finally pulled of the Shimano document on the 7402 and it's a match. @rccardr you win the prize!

That 7400 series freehub in the picture does not appear to be a 7402 I donít think. The freehub body is less long than the 7700 below it. This makes me think it is a 7 speed which (I believe, but we should discuss this further) makes it a 7401. Another reason why I donít think it is a 7402 is the flat axle locknuts. The Uniglide only, 8 speed 7402 and the combo UG/HG 8,9,10 speed 7403 hubs both have domed locknuts that I read somewhere were designed to work better in 126 or 128 mm rear triangle frames. With that said I think they were in reality more like 129mm locknut to locknut making them a perfect fit into a modern 130mm spaced road frame.
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Old 10-17-19, 04:02 PM
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The bottom rear hub is Dura-Ace 7700: my favorite of all time.

The older of the Dura-Ace hubs is a 7-speed 7401 unit: for 6/7 speed Uniglide. Replacement freehubs for these are unobtainable. The tool to replace the freehub: ditto.

The custom #1 (threaded) and #2 (special spline and spacer) cogs are impossible to find. I recommend not assuming any value to this orphaned hub.
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Old 10-17-19, 04:04 PM
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Originally Posted by masi61 View Post
That 7400 series freehub in the picture does not appear to be a 7402 I donít think. The freehub body is less long than the 7700 below it. This makes me think it is a 7 speed which (I believe, but we should discuss this further) makes it a 7401. Another reason why I donít think it is a 7402 is the flat axle locknuts. The Uniglide only, 8 speed 7402 and the combo UG/HG 8,9,10 speed 7403 hubs both have domed locknuts that I read somewhere were designed to work better in 126 or 128 mm rear triangle frames. With that said I think they were in reality more like 129mm locknut to locknut making them a perfect fit into a modern 130mm spaced road frame.
I've got to stop posting before I have my morning coffee, lol!

The hub in question has a still brand new looking "7s" decal right on it.
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Old 10-17-19, 04:44 PM
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Originally Posted by Dave Mayer View Post
The bottom rear hub is Dura-Ace 7700: my favorite of all time.

The older of the Dura-Ace hubs is a 7-speed 7401 unit: for 6/7 speed Uniglide. Replacement freehubs for these are unobtainable. The tool to replace the freehub: ditto.

The custom #1 (threaded) and #2 (special spline and spacer) cogs are impossible to find. I recommend not assuming any value to this orphaned hub.

No worries on my part. The first post was mainly to show how sweet looking these babies are. I've got several classics running 7400 series and quite honestly doubt I'll ever build one up that way. All my bikes are riders and I tend to upgrade them. The wheels are usually the first because modern wheels tend to really liven a bike up.

All that said, it would be cool to find the freehub for it. Or for that matter I may have it. Somewhere in the box of parts this came from is some kind of cassette that came with it. I get to that soon as I continue to clean things up.

I totally appreciate everyone's insight and knowledge on this. Always good to learn something new.
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Old 10-17-19, 05:58 PM
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nice pics. they are cool parts !

Here's a 7850, new in box. End of the evolution, best rear hub ever. Has the titanium freehub body

I'm going to build it up and use it for a rear wheel on my travel bike (Ritchey Breakaway titanium with DI2)

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Old 10-17-19, 07:01 PM
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If you find yourself needing #1 or #2 cogs, let me know.
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Old 10-17-19, 09:49 PM
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Loose Screws has a few of those smaller-diameter 13T/14T/15T/16T cogs in stock, too, but definitely hit up the Dr first!
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