front derailler

[Terry]

I have an old Trek 2300 with the shimano 600 group. My front derailler died. So here are the
questions: 1. The 600 is an 8 speed group. Is there any real difference between 8 and 9 speed
deraillers. 2. The seat tube on the 2300 has a 1 3/8" diameter. When replacing the derailler, can I
use a "braze on" with the old clamp or do I have to find a derailler which comes with a clamp. I
wasn't sure about the compatibility of different deraillers with the existing clamp. Any help would
be appreciated.

Terry

 

[Rb]

If I understand your question #2 correctly---If your old clamp is still in good condition, you
should be able to use a braze-on type derailleur with it.

The availability of 1-3/8 inch clamp-on derailleurs is limited. I had to buy a 1-3/8 inch clamp and
separate braze-on derailleur when I built up an old Litespeed frameset recently. I found a nice
Shimano clamp of the right size in a box of older parts at a local shop. I'm not sure if Shimano
still makes it.

r.b.

[email protected] (Terry) wrote in message news:<[email protected]>...
> I have an old Trek 2300 with the shimano 600 group. My front derailler died. So here are the
> questions: 1. The 600 is an 8 speed group. Is there any real difference between 8 and 9 speed
> deraillers. 2. The seat tube on the 2300 has a 1 3/8" diameter. When replacing the derailler, can
> I use a "braze on" with the old clamp or do I have to find a derailler which comes with a clamp. I
> wasn't sure about the compatibility of different deraillers with the existing clamp. Any help
> would be appreciated.
>
> Terry

 

[James Connell]

Terry wrote:
> I have an old Trek 2300 with the shimano 600 group. My front derailler died. So here are the
> questions: 1. The 600 is an 8 speed group. Is there any real difference between 8 and 9 speed
> deraillers. 2. The seat tube on the 2300 has a 1 3/8" diameter. When replacing the derailler, can
> I use a "braze on" with the old clamp or do I have to find a derailler which comes with a clamp. I
> wasn't sure about the compatibility of different deraillers with the existing clamp. Any help
> would be appreciated.
>
> Terry
to aswer the other question, there isn't much practical diff between the 8 and 9 sp ders. the 9sp
cage is a little narrower and is slightly different in shape. if i understand you, you want to put
the 9sp der on with an 8 sp group? it will work fine, y'll just have to spend a little more care
setting up the front adjustments to prevent chain rub because of the narrow cage.