Bicycle Mechanics - Such thing as a FD Clamp spacer?

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jerrymcdougal
03-29-07, 12:57 PM
I have a Ultegra FD with a 34.9mm clamp. My bike, however is a 31.8mm seat tube. Is there any spacers available on the market that will remedy this? I was thinking about using some thick rubber stripping (its from a cyclocomputer mount) to wrap around the seat tube to give me that extra diameter. Does that sound smart?

Thanks alot!

-Jerry

waterrockets
03-29-07, 01:26 PM
Yeah, my kid hauler has the same issue (though it's an MTB). I wrapped bike tube around the seat tube and clamped that. Flawless shifting for 8 months straight now.
barba
03-29-07, 01:31 PM
Braze ons and adapter clamps are the way to go, IMO. I hate not being able to move parts around bikes.

Try this gizmo:
http://www.universalcycles.com/shopping/product_details.php?id=16861&category=530

terry b
03-29-07, 06:03 PM
I ended up with a new steel bike the year that Campy stopped making the smallest FD clamp in Record. Bought the next bigger one and clamped it with the rubber shim from a computer. Still working, 2000 miles later.
jerrymcdougal
03-29-07, 07:30 PM
Great, thanks alot everyone, rubber shims it will be!
cs1
03-30-07, 02:37 AM
Braze ons and adapter clamps are the way to go, IMO. I hate not being able to move parts around bikes.

Try this gizmo:
http://www.universalcycles.com/shopping/product_details.php?id=16861&category=530


That is very useful. It's getting harder to source 28.6 ders anymore. Thanks for the link


Tim
oilman_15106
03-30-07, 07:40 AM
That is very useful. It's getting harder to source 28.6 ders anymore. Thanks for the link


Tim

Braze on is the way to go, but I disagree with the 28.6 being harder to get?
top506
03-30-07, 09:04 AM
Braze on is the way to go, but I disagree with the 28.6 being harder to get?
FWIW, Nashbar has 28.6 braze-on clamp adapters for 2 or three bucks. I ordered a couple just to have around.
Top
LBIkid
03-30-07, 09:38 AM
The Universal Cycles band clamp linked above is exactly what I need...except that I need to go from 31.9 to 28.6 and it looks like they don't carry that size. Anyone know where I could find one? thanks.
CampyGuy
03-30-07, 03:31 PM
I had the same problem with a Shimano FD. But I learned something interesting, most of their FDs use the same style clamp. So I unscrewed the bigger one and switched it with the clamp from an older FD. It worked perfectly.