"David L. Johnson >" <David L. Johnson <
[email protected]> wrote in message
news:[email protected]...
> On Mon, 10 Feb 2003 22:53:23 -0500, MSCTROSE wrote:
>
> > I have a set of Campy Chorus hubs, 2002, with about ten thousand miles on them. They are due for
> > lubing. I read the little pamphlet that came with them, and it seems pretty straightforward. One
> > question for our resident Campy experts: Do you really have to take off the freehub to grease
> > the bearings on the rear hub right side, or is it possible to do it without removing the
> > freehub?
>
> You have to take off the freehub. But, don't worry, it is not like taking apart a freewheel. The
> bearings are way up inside the fat part of the shell, behind the pawls, but the pawls stay where
> they are supposed to be pretty well.
>
> Some hubs (Record) now have a pawl/spring setup that uses a single
threadlike
> spring for all three pawls, simultaneously tensioning them and holding them on the freehub. The
> other method, which Chorus probably still has, has three little coil springs tensioning the pawls,
> so they might fall out. A bit of grease holds them in place.
>
> Campy provides a little clamp to allow you to easily re-insert the freehub when you are done, but
> I didn't get it (second hand hubs) and never needed it. Twist the freehub as you press down on the
> pawls and they will slide in.
>
> The bearings are different sizes. On the older design, left side is the usual 9 1/4" balls, the
> right side is, I think, 3/16 or maybe 7/32. The new Record design uses very small balls, maybe
> 5/32 or at most 3/16 (Peter knows from memory, I don't). The Record hubs also have a necessary
> bearling cage.
The carrier isn't necessary as far as I know. It's like all bearing "cages".
>Interesting design, but my REcord hub had had some abuse, and the bearing cups (nonreplacable)
>suffered. I think that was exacerbated by the very small bearings. Larger ones would seem to be
>more durable.
I'd like to understand how this might be the case. I figure more smaller bearings would cause less
wear. Also, as I understand, the contact patch size doesn't change with bearing size so larger
bearings wouldn't prevent race wear. You must've had them improperly adjusted.
> On the other hand, the Record hub is very easy to work on, and very light
Yes.
Robin Hubert