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-   -   Interesting freewheel hub - cartridge bearings (https://www.bikeforums.net/classic-vintage/1178181-interesting-freewheel-hub-cartridge-bearings.html)

Spaghetti Legs 07-13-19 07:38 AM

Interesting freewheel hub - cartridge bearings
 
I’m currently building up a shop spares city bike for my wife. It’s going to be a 7 speed flatbar bike. I have a set of wheels, no name English thread freewheel hub on Wolber Gentleman 81 rims, that have been sitting in my shop for a couple of years awaiting overhaul. I removed the NDS locknut but the cone was weird in that it was pretty tight, so I went to drive side and loosened the “cone” only to find the whole axle threaded out like this. I pried off the bearing seals and they looked pretty good so I stuffed some Phil Wood grease in and put everything back together. Spins pretty well. I’m assuming this is from late 80’s or early 90’s. First time I’ve come across a freewheel hub with cartridge bearings.
https://cimg7.ibsrv.net/gimg/bikefor...e7430763d.jpeg


https://cimg8.ibsrv.net/gimg/bikefor...ff4afb134.jpeg

wesmamyke 07-13-19 09:53 AM

Not entirely uncommon, the Specialized road/touring hubs were like that.

Nemosengineer 07-13-19 12:43 PM

A nice very common bearing (SKF 6001-RS1), can be found for about $5.00 each.

Seals, 1

Material Standard, SAE 52100

Bore, 12mm .4724" -.0003

Outside Diameter , 28mm 1.1024" -.0004

Width, 8mm .3150" +.0000/-.0050

Max Fillet Radius, .012

No. Balls, 7

Ball Diameter, 3/16

Static Load, 500 lbs.

Dynamic Load, 805 lbs.

: Mike

seypat 07-13-19 02:38 PM

Probably Specialized. I have a set. Chrome covers that have Specialized on them. Very good hubs.

Bianchigirll 07-13-19 06:52 PM

You took the seal off. they come out as a unit

https://ep1.pinkbike.org/p4pb9147128/p4pb9147128.jpg

63rickert 07-13-19 07:14 PM

It's a Sanshin. I think of them as Sanshin Gyromaster because that was the first I saw. Lots of slightly different versions. Sold as SunTour and Specialized. Also sold with no markings at all. Wonderful hubs. Really wonderful hubs. One of best ever.

Cl904 07-13-19 07:19 PM

I’ve got suize hubs like that on my 84 pro tour, and a mixed set of Sansin and suntour superbe pro on my prelude that I found at the thrift store. Great hubs all around.

Spaghetti Legs 07-13-19 11:38 PM

Thanks all, good info. It does seem like a solid hub. No marks on it. These came on a bike I bought but can’t remember for sure which one.

seypat 07-15-19 05:04 PM

Here is my Specialized front hub. The lettering has worn off the dust cover, but the sealed band is still on. The rear still has the lettering, but no band.

https://cimg6.ibsrv.net/gimg/bikefor...2b723b52d3.jpg
https://cimg8.ibsrv.net/gimg/bikefor...3b09892998.jpg

tiger1964 07-15-19 06:50 PM


Originally Posted by Spaghetti Legs (Post 21024767)
First time I’ve come across a freewheel hub with cartridge bearings.

Some months ago, I got very good input on this forum about how to locate, and install, replacement sealed bearings in my Avocet hubs. Now they are great, and only retiring them due to a frame swap needing 126mm (another thread on this forum). Not all that hard... once you are told how.

So I presume this is a rare combination?

seypat 07-15-19 07:53 PM

Bringing up the rear.......... with the faded Specialized script.

https://cimg6.ibsrv.net/gimg/bikefor...1c948d0fb9.jpg
https://cimg0.ibsrv.net/gimg/bikefor...cd7d177a43.jpg

zonaut 07-29-19 10:59 AM

I'm having the same issue with my DS rear wheel but my dust cover/cone doesn't quite come off. I tried pulling on the cone itself but it seems pressed into the dust cover. Any ideas?


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