Re: [CR]replacing the parallelogram arms in a Campy NR der

(Example: Racing:Jean Robic)

Date: Mon, 1 Jul 2002 11:12:56 -0700 (PDT)
From: "Brandon Ives" <monkeylad@mac.com>
To: "C. Andrews" <chasds@mindspring.com>
Subject: Re: [CR]replacing the parallelogram arms in a Campy NR der
Cc: classicrendezvous@bikelist.org


Easy, easy you can do it yourself. I think Euro-Asia still has the replacement pins. Pull the whole thing apart until you just have the parallelogram left. Now turn it upside down on a vise with soft jaws so the vise opening is barely wider than the pin. Using a very small punch (or section from a 14g spoke) lightly tap the pin loose don't push it all the way out. Now do the same to the other one holding the front plate. Once you've loosened them you should be able to pull them out with needle-nose pliers. Now just do the same routine but in reverse with the new front plate. If you don't want to undertake the project just find a shop with someone who's been a wrench for 15+ years and they can do it for you. enjoy, Brandon"monkeyman"Ives Disassembly is fun in Santa Barbara, Calif.

On Monday, 01, 2002, at 11:10AM, C. Andrews <chasds@mindspring.com> wrote:
>
>I have a feeling we went over this before, but it's been
>long enough that I don't recall much about it.
>
>I have a no-date Campagnolo NR der upon which someone did a
>bit of home decoration. they thinned and drilled and cut
>the parallelogram arms to lighten them.
>
>Problem is, over the years the outer arm has started to
>buckle in the middle, due to a stress riser right in the
>middle of the arm, caused by the cutout there. It's not
>broken yet, but I figure, anytime, and *pop* that'll be
>that.
>
>Is it possible to removed the pins holding the arms in
>place, replace the arm, then re-insert the pins? I'm
>thinking a reasonably careful machinist could probably do it
>without much trouble?
>
>Thanks for any insight you can provide.

>

>Charles Andrews

>SoCal