front derailler clamp?

[Scott]

I'm replacing worn out RSX with Shimano 105 on my old trek
1220. My front derailler requires a 34.9mm clamp. All I can
find is 21.8mm or 31.8mm. I noticed the clamp is removable
on the 105. Is there a larger replacement clamp available?
If not, what would be a good alternative?

 

[P. Hardewig]

If you're inclined toward Shimano, it's part # SH-SM-AD15 (1-3/8" adapter)
This clamp allows braze-on FD use on 34.9 mm tubing.
Your LBS should be able to get this for you, if you're on good terms with'em
(sometimes they won't bother with such a "small" order).
http://www.glorycycles.com/framclamforf.html
http://www.excelsports.com/new.asp?page=8&major=1&minor=33&description=Front+Derailleur+Clamp+Adapter&vendorCode=SHIM
or I also found it, although pricier at:
http://www.biketoolsetc.com/index.cgi?id=792469522710&c=Repair%20Parts&sc=Derailleurs&tc=Front%20Mounts

'03 Campy Record Triple FD also fits the bill w/o an adapter
(69.99 @ Colorado Cyclist)

Hope this helps!

Wishing you flat hills, tailwinds & friendly dogs, Pat
"Scott" <[email protected]> wrote in message news:XZqdnQCv4fahfcrdRVn-
[email protected]...
> I'm replacing worn out RSX with Shimano 105 on my old trek
> 1220. My front derailler requires a 34.9mm clamp. All I
> can find is 21.8mm or 31.8mm. I noticed the clamp is
> removable on the 105. Is there a larger replacement clamp
> available? If not, what would be a good alternative?

 

[Scott]

Thanks for the detail, but I'm confused on this application
as I don't have a braze on tube. Is it possible to use a
braze FD, coupled with this clamp adapter to get the right
size? I thought these adapters were just for broken tube
braze ons. Thanks

"P. Hardewig @fuse.net>" <pjwig<nospam> wrote in message
news:[email protected]...
> If you're inclined toward Shimano, it's part # SH-SM-AD15
> (1-3/8" adapter) This clamp allows braze-on FD use on 34.9
> mm tubing. Your LBS should be able to get this for you, if
> you're on good terms
with'em
> (sometimes they won't bother with such a "small" order).
> http://www.glorycycles.com/framclamforf.html
>
http://www.excelsports.com/new.asp?page=8&major=1&minor=33&-
description=Front+Derailleur+Clamp+Adapter&vendorCode=SHIM
> or I also found it, although pricier at:
>
http://www.biketoolsetc.com/index.cgi?id=792469522710&c=Rep-
air%20Parts&sc=Derailleurs&tc=Front%20Mounts
>
> '03 Campy Record Triple FD also fits the bill w/o an
> adapter (69.99 @ Colorado Cyclist)
>
> Hope this helps!
>
> Wishing you flat hills, tailwinds & friendly dogs, Pat
> "Scott" <[email protected]> wrote in message news:XZqdnQCv4fahfcrdRVn-
> [email protected]...
> > I'm replacing worn out RSX with Shimano 105 on my old
> > trek 1220. My
front
> > derailler requires a 34.9mm clamp. All I can find is
> > 21.8mm or 31.8mm. I noticed the clamp is removable on
> > the 105. Is there a larger
replacement
> > clamp available? If not, what would be a good
> > alternative?
> >
>

 

[Gary Jacobson]

Im pretty certain that I have the clamp you need. A Sachs.
Extra nice. Contact me off list if interested. Be sure to
"remove this bit". GJ

"Scott" <[email protected]> wrote in message news:XZqdnQCv4fahfcrdRVn-
[email protected]...
> I'm replacing worn out RSX with Shimano 105 on my old trek
> 1220. My front derailler requires a 34.9mm clamp. All I
> can find is 21.8mm or 31.8mm. I noticed the clamp is
> removable on the 105. Is there a larger replacement clamp
> available? If not, what would be a good alternative?

 

[Qui Si Parla Ca]

P-<< Your LBS should be able to get this for you, if you're
on good terms with'em (sometimes they won't bother with such
a "small" order). >><BR><BR>

A decent bike shop wil have these in stock all the time.

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

 

[Mike Jacoubowsk]

> Thanks for the detail, but I'm confused on this
> application as I don't
have
> a braze on tube. Is it possible to use a braze FD, coupled
> with this clamp adapter to get
the
> right size? I thought these adapters were just for broken
> tube braze ons.

Exactly. Most derailleurs aren't offered in a 34.9mm clamp
size, so you use one of the adapters and bolt the derailleur
to that. They're used on brand new bikes all the time; their
main purpose is not to replace broken braze-on fittings
(although in a pinch they could certainly do so!).

You should have little trouble finding a shop with one of
the adapters, particularly a shop that does much road-
bike business.

--Mike-- Chain Reaction Bicycles
http://www.ChainReactionBicycles.com