THERE'S the straight poop - what great info! Thanks Chuck, I'd always wondered.
Mark Bulgier Seattle, Wa USA
Chuck S. wrote:
> There is quite a bit of information for dating Campagnolo hubs in
> the Campagnolo Timeline at: http://www.velo-retro.com
>
> As far as replating three-piece (FB style) Campagnolo hubs:
>
> You cannot replate the steel center barrel with the alloy flanges
> still attached. You use an automotive gear puller to remove the
> aluminum alloy flanges from the steel center barrel. Heating just
> the flanges with a propane torch before removing helps a lot. The
> aluminum flange expands _much_ more rapidly than the steel barrel.
>
> The portions of the center barrel that the flanges are pressed on
> must be masked off before chrome removal. In other words, you are
> just removing and rechroming the part of the barrel you see, not
> the interference fit area of the barrel that the flange is pressed
> on. This area is centerless ground to a press fit and it is
> important to preseve this dimension!
>
> When reassembling, you should again heat the flanges and use a
> automotive bearing press if possible. I would also recommend
> the use of red Loctite (bearing mount). Be aware that the holes
> in each flange need to be staggered in relation to each other;
> very important but easy to overlook.
>
> Historically the rear three-piece hub had a problem with the
> drive-side flange coming loose. The forged one piece aluminum
> Record hub that replaced the three-piece steel and aluminum alloy
> Gran Sport hub solved this problem along with the more obvious
> advantage of being lighter.
>
> Chuck Schmidt
> South Pasadena, Southern California