Rear Derailler thread chasing: front to back, or back to front?

[Brian Plaugher]

So Campagnolo said chase your threads before installing your new rear derailler, but I didn't, and
cross threaded it. I backed it out before going too far, but wonder (now that I have the tap):
should I start on the derailler side of the threads, where the damage is, or try coming in from the
back? All wise advice appreciated. Brian Plaugher

 

[Garry N]

Go from the back. Garry

"Brian Plaugher" <[email protected]> wrote in message
news:[email protected]...
> So Campagnolo said chase your threads before installing your new rear derailler, but I didn't, and
> cross threaded it. I backed it out before going too far, but wonder (now that I have the tap):
> should I start on the derailler side of the threads, where the damage is, or try coming in from
> the back? All wise advice appreciated. Brian Plaugher

 

[Qui Si Parla Ca]

b plaugher-<< installing your new rear derailler, but I didn't, and cross threaded it

<< should I start on the derailler side of the threads, where the damage is, or try coming in
from the back?

From the back where the threads are okay or at least better-

Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302
(303)440-3535 http://www.vecchios.com "Ruote convenzionali costruite eccezionalmente bene"

 

[Paul Kopit]

What is the tap size/specification?

On 21 Jan 2003 22:30:53 -0800, [email protected] (Brian Plaugher) wrote:

>So Campagnolo said chase your threads before installing your new rear derailler, but I didn't, and
>cross threaded it. I backed it out before going too far, but wonder (now that I have the tap):
>should I start on the derailler side of the threads, where the damage is, or try coming in from the
>back? All wise advice appreciated. Brian Plaugher

 

[A Muzi]

> On 21 Jan 2003 22:30:53 -0800, [email protected] (Brian Plaugher) wrote:
>
> >So Campagnolo said chase your threads before installing your new rear derailler, but I didn't,
> >and cross threaded it. I backed it out before going too far, but wonder (now that I have the
> >tap): should I start on the derailler side of the threads, where the damage is, or try coming in
> >from the back?

"Paul Kopit" <[email protected]> wrote in message
news:[email protected]...
> What is the tap size/specification?

Use an M10x1.0.

For the picayunes, Campagnolo used to thread Italian Whitworth 10f.26 (55 degrees) but IMHO a
standard metric tap is so close as to not matter.

--
Andrew Muzi http://www.yellowjersey.org Open every day since 1 April 1971

 

[Meccanico Di Bi]

Paul Kopit <[email protected]> wrote in message
news:<[email protected]>...
> What is the tap size/specification?

Metric 10x1

 

[Qui Si Parla Ca]

10 by 1-

<< What is the tap size/specification? >><BR><BR>

Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302
(303)440-3535 http://www.vecchios.com "Ruote convenzionali costruite eccezionalmente bene"