Front derailleur clamp too big!
10-23-08, 01:32 AM
#1
Senior Member
Thread Starter
Join Date: Jul 2008
Posts: 561
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Front derailleur clamp too big!
I just bought a SRAM Rival front derailleur, stupidly assuming that the 31.8 clamp would fit my seat tube. It's too big. Is there any kind of shim I can put in there? Or do I just need to buy a new front derailleur?
10-23-08, 04:57 AM
#3
Great State of Varmint
Join Date: Sep 2008
Location: Dante's Third Ring
Posts: 7,476
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 15 Times
in
15 Posts
I just got a Shimano XTR in 34.9mm for my bike. It came with adapters to allow it to fit both the 28.6mm and the 31.8mm. So the objects do exist. Maybe ask your LBS if they have some of these. They might give you one.
10-23-08, 06:00 AM
#4
Spelling Snob
Join Date: Dec 2005
Location: Plano, Texas
Posts: 2,862
Bikes: Panasonic DX4000, Bianchi Pista
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 2 Times
in
1 Post
The FD is one of the cheapest components. Consider buying the correct size.
__________________
The first rule of flats is You don't talk about flats!
The first rule of flats is You don't talk about flats!
10-23-08, 08:49 AM
#5
STFD
Join Date: Jul 2008
Location: North Bergen, NJ
Posts: 778
Bikes: '80 Windsor Carrera Sport, '02 Specialized Sirrus A1, '10 Giant Escape 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
Just cut up some old inner tube and wrap it 'round and 'round until it's the right diameter. Not.
10-23-08, 12:20 PM
#7
Senior Member
Join Date: Apr 2008
Location: A Latvian in Seattle
Posts: 1,020
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
I like P7's suggestion. Seems like all the FD's I've bought have come with an adapter or two, which I just toss in my probably-never-use box.
10-23-08, 10:07 PM
#8
Insane Bicycle Mechanic
Join Date: Mar 2008
Location: other Vancouver
Posts: 9,826
Mentioned: 34 Post(s)
Tagged: 0 Thread(s)
Quoted: 797 Post(s)
Liked 695 Times
in
372 Posts
If all else fails, Schedule 40 PVC pipe has a 1/16" wall thickness. It makes a perfect shim for a front derailleur that's one size too big. A 1 1/2" long piece works perfectly.
I bought a wrong-size front derailleur (doh!) and used a PVC shim to make it work. It's still there, working perfectly, 6 years later.
I bought a wrong-size front derailleur (doh!) and used a PVC shim to make it work. It's still there, working perfectly, 6 years later.
__________________
Jeff Wills
Comcast nuked my web page. It will return soon..
Jeff Wills
Comcast nuked my web page. It will return soon..
