Campagnolo Integrated Headset modifications?
#1
Junior Member
Thread Starter
Join Date: Jun 2005
Posts: 183
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
Campagnolo Integrated Headset modifications?
Hi all,
I am not sure there is an answer to my question but here goes.
I have a frame that uses a 42mm Campagnolo Integrated Style drop in headset with a 1-1/8" steerer. I would like to purchase a newer 1-1/8" to 1-1/2" tapered fork and was wondering is there was an adapter for the lower headset race?
It seems to me that a drop in bearing that is still 42mm in the outer diameter but narrower in the inner diameter would work but I am not sure this exists.
Any recommendations?
Thanks!
I am not sure there is an answer to my question but here goes.
I have a frame that uses a 42mm Campagnolo Integrated Style drop in headset with a 1-1/8" steerer. I would like to purchase a newer 1-1/8" to 1-1/2" tapered fork and was wondering is there was an adapter for the lower headset race?
It seems to me that a drop in bearing that is still 42mm in the outer diameter but narrower in the inner diameter would work but I am not sure this exists.
Any recommendations?
Thanks!
#2
Senior Member
Join Date: Apr 2009
Location: New Rochelle, NY
Posts: 38,706
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Mentioned: 140 Post(s)
Tagged: 1 Thread(s)
Quoted: 5779 Post(s)
Liked 2,576 Times
in
1,427 Posts
In a word NO.
Simple spacial concepts, You can adapt a hole to accept a smaller peg, but not the other way around.
The lower end of your head tube is sized for a 1-1/8" steerer and cannot be made bigger to accept one 1-1/2" in diameter.
It's possible that I'm misreading your post, but if not, and if you're going to a larger steerer, you're SOL.
Simple spacial concepts, You can adapt a hole to accept a smaller peg, but not the other way around.
The lower end of your head tube is sized for a 1-1/8" steerer and cannot be made bigger to accept one 1-1/2" in diameter.
It's possible that I'm misreading your post, but if not, and if you're going to a larger steerer, you're SOL.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
#4
Junior Member
Thread Starter
Join Date: Jun 2005
Posts: 183
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
Hmmm, maybe I can clarify.
The head tube is larger than 1-1/8", but is made to accept a Campagnolo Integrated Headset which by definition has a 42mm outer bearing diameter. These bearings fit directly into the head tube without any external cups as they are already specified within the head tube itself. The inner diameter of these headset bearings are spaced to fit a 1-1/8" fork steerer tube both above and below.
I was thinking that the lower bearing, still using a 42mm outer diameter to allow it to be used within the head tube, however instead of the inner diameter supporting a 1-1/8" it supports a 1-1/2" tapered fork steerer. That's 38mm by my calculations so the inner bearing diameter is 38mm and the outer diameter is 42mm. That only leaves 4mm for the thickness of the bearings, but maybe that's possible.
The head tube is larger than 1-1/8", but is made to accept a Campagnolo Integrated Headset which by definition has a 42mm outer bearing diameter. These bearings fit directly into the head tube without any external cups as they are already specified within the head tube itself. The inner diameter of these headset bearings are spaced to fit a 1-1/8" fork steerer tube both above and below.
I was thinking that the lower bearing, still using a 42mm outer diameter to allow it to be used within the head tube, however instead of the inner diameter supporting a 1-1/8" it supports a 1-1/2" tapered fork steerer. That's 38mm by my calculations so the inner bearing diameter is 38mm and the outer diameter is 42mm. That only leaves 4mm for the thickness of the bearings, but maybe that's possible.
#6
Senior Member
Join Date: Apr 2009
Location: New Rochelle, NY
Posts: 38,706
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Mentioned: 140 Post(s)
Tagged: 1 Thread(s)
Quoted: 5779 Post(s)
Liked 2,576 Times
in
1,427 Posts
In theory yes, but to my knowledge no such bearing exists.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
#8
Senior Member
Join Date: Apr 2009
Location: New Rochelle, NY
Posts: 38,706
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Mentioned: 140 Post(s)
Tagged: 1 Thread(s)
Quoted: 5779 Post(s)
Liked 2,576 Times
in
1,427 Posts
I don't know your budget, but you might find something if you keep looking. But in general, you're asking for something that is a bit off the straight and narrow path, and the combination of Carbon, Disc, & Road are somewhat contradictory and one may have to go.
Before you give up, email a few builders, including Richie Sachs, and Chris Igleheart, and others and ask if they know of any. Richard Sachs especially may know of a DB carbon fork made for x-cross but with 1-1/8" steerers since there's so much out there to provide a retrofit market.
Before you give up, email a few builders, including Richie Sachs, and Chris Igleheart, and others and ask if they know of any. Richard Sachs especially may know of a DB carbon fork made for x-cross but with 1-1/8" steerers since there's so much out there to provide a retrofit market.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
#9
Senior Member
Join Date: Sep 2010
Location: Roswell, GA
Posts: 8,319
Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta
Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 1438 Post(s)
Liked 1,092 Times
in
723 Posts
"That only leaves 4mm for the thickness of the bearings"
Since you are working with diameters you have to divide by 2, so that actually leaves 2mm for the bearing thickness. It is very unlikely that inner and outer races and balls or rollers with thickness totaling 2mm, strong enough, can be fabricated.
Since you are working with diameters you have to divide by 2, so that actually leaves 2mm for the bearing thickness. It is very unlikely that inner and outer races and balls or rollers with thickness totaling 2mm, strong enough, can be fabricated.
#11
Senior Member
Join Date: Dec 2009
Location: Melbourne, Oz
Posts: 9,545
Bikes: https://weightweenies.starbike.com/forum/viewtopic.php?f=10&t=152015&p=1404231
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 1528 Post(s)
Liked 718 Times
in
510 Posts
Looks like you can do it with an external cup lower race, pic 4, second diagram in pic 6.
EDIT: oops, I was thinking 44mm not 42mm...
EDIT: oops, I was thinking 44mm not 42mm...
Last edited by Kimmo; 09-09-12 at 10:13 PM.
#12
Junior Member
Thread Starter
Join Date: Jun 2005
Posts: 183
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
:confused: What am I missing here? VERY quick google pulled these up:
One ($115)
Two
Three
Four
Five
One ($115)
Two
Three
Four
Five
Since I have a Frankenstein build, my ultimate goal is to find a 650c carbon disc fork with 1-1/8" steerer. I mistyped earlier and wrote 700c but ideally it would be 650c (700c works too though). Ironically, I have found a bunch of 26" forks that match my needs however the axel to crown length is quite a bit longer than my existing fork. Since MTB forks seem to be suspension corrected or have tons of tire clearence so they are actually "longer" than my existing 700c fork.
The new Enve 2.0 road fork with disc brake looks like it would work just great should it have a straight 1-1/8" steerer or I found a headset conversion.
Talk about challenging!