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What kind of hubs are these?

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What kind of hubs are these?

Old 05-12-16, 12:26 PM
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What kind of hubs are these?

Came on an early '90's tandem. They are cartridge bearing hubs. They look almost like stainless; not sure though. Two of the dust seals say Specialized but I suppose they could be replacements. Or not. There are no other markings. Fwiw the front has a Suntour q/r; rear is nutted.

[edit] forgot to mention, both front and rear are 40h.


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Old 05-12-16, 11:58 PM
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Looks kinda like these. Ad says system 8 (shimano?). This bike is late 80s. Some good pics of hubs are shown, may help. https://phoenix.craigslist.org/evl/bik/5561717267.html
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Old 05-13-16, 12:35 AM
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The hubs are made by Suntour and relabeled as Specialized. We use to sell the Specialized hubs back in the day. Nice stuff, very smooth.
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Old 05-13-16, 03:51 AM
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Originally Posted by blakcloud
The hubs are made by Suntour and relabeled as Specialized. We use to sell the Specialized hubs back in the day. Nice stuff, very smooth.
Thank you , had been thinking they might be Sanshin Matsumoto. One clue is the knurling pattern on the outer face of the front hub's locknuts.
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Old 05-13-16, 12:44 PM
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Thanks for the info. The ones on the Sierra are close, but the flare of the hub body into the flange isn't quite right. Nice looking bike btw and good price.

Suntour/Specialized it is then, and you are right, they do seem quite smooth.

I don't have a lot of experience with cartridge bearing hubs. When it comes time to replace the bearings, can I just order some the right size from McMaster Carr, or do I need something exotic?
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Old 05-13-16, 12:51 PM
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I don't think Suntour made hubs. Possibly Sanshin made them for Specialized.
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Old 05-13-16, 12:53 PM
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Originally Posted by due ruote
Thanks for the info. The ones on the Sierra are close, but the flare of the hub body into the flange isn't quite right. Nice looking bike btw and good price.

Suntour/Specialized it is then, and you are right, they do seem quite smooth.

I don't have a lot of experience with cartridge bearing hubs. When it comes time to replace the bearings, can I just order some the right size from McMaster Carr, or do I need something exotic?
Thanks for posting these. New to me; no experience of their sealed/cartridge models. The other clue for me was the contour of the dust cap. Wonder just what models Sanshin Matsumoto has kept going following the closure of MAEDA...

No experience servicing cartridge bearing hubs so must leave a response to others more knowledgeable.
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Old 05-13-16, 12:58 PM
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Originally Posted by sss
I don't think Suntour made hubs. Possibly Sanshin made them for Specialized.
This is sort of true and sort of not true.

Sanshin Matsumoto make the hubs labeled Suntour AND the hubs labeled Specialized.
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Old 05-16-16, 11:21 AM
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Just to wrap this up, I had also asked about these on the tandem SF, and someone there said they were Sansin-made and re-branded as both Suntour and Specialized. I took a look at Ebay and found this completed auction, which appears to be a match.
[h=1]Specialized Sansin rear tandem hub, 40 hole, 130mm, freewheel[/h]
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Old 05-16-16, 12:25 PM
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Originally Posted by due ruote
Just to wrap this up, I had also asked about these on the tandem SF, and someone there said they were Sansin-made and re-branded as both Suntour and Specialized. I took a look at Ebay and found this completed auction, which appears to be a match.
Specialized Sansin rear tandem hub, 40 hole, 130mm, freewheel

Que Bueno!

Fine detective work.
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Old 05-16-16, 02:10 PM
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I have replaced bearings in that type of Specialized hub using standard bearings from McMaster. Heat the hub to 250 to 275F and pull them out with the right tool. Heat again and push the new ones in. Mine were water damaged. With care the original should last a long time.
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