My guess is they would be through hardened.. The sections are thin enough, the axisymetric shape will distort predictibly, and it is cheap.
That means you get a fresh hard surface but probably no more than 63 Rockwell C.
Joe B-Z
Great Notch NJ
Tipo
> As someone needing to get some 3-piece hub barrels reconditioned, I was
> wondering if they have much life after regrinding or will the hardened
> surface be ground away? When hub barrels are rechromed, do the bearing
> surfaces get chromed too? I keep trying to find someone who has had this
> reconditioning done successfully so that I can get the names of competent
> restorers -- I would hate to send the work out and get a load of scrap
back.
> Anyone know anyone suitable in the UK?
>
> Hugh Thornton
> Nantwich UK
>
>
> >From: NortonMarg@aol.com
> >To: sachs@erols.com, classicrendezvous@bikelist.org
> >Subject: Re: [CR]Now: Nit picking, Was: Campagnolo Nuovo Tipo
> >Date: Wed, 14 Aug 2002 19:39:32 EDT
> >
> >In a message dated 8/14/02 4:02:35 PM Pacific Daylight Time,
> >sachs@erols.com
> >writes:
> >
> ><< By the way, I believe that my Schwinn Paramount 3-piece hubs (steel
> >barrel,
> > alloy shell) have the cups machined directly into the barrel. It's a
> > feature, not an advantage... >>
> >If they are the same as most 3 piece hubs, there are no separate cups.
The
> >bearings run directly on the metal of the steel center and when they pit,
> >you
> >have the choice of replacing the entire hub, or finding someone who will
> >undertake the expensive regrinding operation after removing the flanges.
In
> >the day, hubs were replaced. The "innovative" Record alloy hub with the
> >replaceable "machined and then ground" races was a major improvement over
> >tossing the hubs. Now that these hubs are valuable collectors items, the
> >relatively insane and expensive process of regrinding them (so as to NOT
> >toss
> >them) is more realistic than "in the day".
> >Stevan Thomas
> >Alameda, CA