|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Campy Freehub Replacement - any issue with the new pawls in old hub body?
While performing a long overdue check-up, I noticed that my 2000 era
Campy Chorus freehub was cracked (worn chain, led to the replacement of cassette, led to discovery of significant cracks in the freehub). Apparently this is a common problem with the 2000-2006 freehub design on the mid to upper end Campy offerings. After reading everything I could find on the net, I decided to buy a new Record hub and transplant the new hub innards (most everything except the hub body, cups, and inner washer/seal) to the old hub body. The pawls on the new freehub have a different part number than the on the old style. Is there any known issue with the new freehub/pawl system working with the old hub body (including cups and engagement teeth)? Here's the reason for my concern.... I made several mistakes when reassembling the new hub parts in my old wheel / hub body, including: a failure to engage the bearing dust seals in the cups, and an application of heavy grease on the freehub pawls. My initial QA tests detected that the freehub pawls randomly engaged while coasting. Fortunately, I detected this issue while doing test runs on my driveway rather than coming down Old San Jose Road in a 40 mph tuck. After diagnosing the problem and fixing the seal and grease problems, the freehub seems to work fine. I even survived a few fast descents. But, I'm still a little afraid that there might be another underlying problem with this combination. However, it sounds as if many people have tired some version of my upgrade (e.g. at least using the new axle-freehub combo). |
Ads |
#2
|
|||
|
|||
Campy Freehub Replacement - any issue with the new pawls in oldhub body?
Op 15-2-2011 18:46, Geoff Rilling schreef:
While performing a long overdue check-up, I noticed that my 2000 era Campy Chorus freehub was cracked (worn chain, led to the replacement of cassette, led to discovery of significant cracks in the freehub). Apparently this is a common problem with the 2000-2006 freehub design on the mid to upper end Campy offerings. After reading everything I could find on the net, I decided to buy a new Record hub and transplant the new hub innards (most everything except the hub body, cups, and inner washer/seal) to the old hub body. The pawls on the new freehub have a different part number than the on the old style. Is there any known issue with the new freehub/pawl system working with the old hub body (including cups and engagement teeth)? Here's the reason for my concern.... I made several mistakes when reassembling the new hub parts in my old wheel / hub body, including: a failure to engage the bearing dust seals in the cups, and an application of heavy grease on the freehub pawls. My initial QA tests detected that the freehub pawls randomly engaged while coasting. Fortunately, I detected this issue while doing test runs on my driveway rather than coming down Old San Jose Road in a 40 mph tuck. After diagnosing the problem and fixing the seal and grease problems, the freehub seems to work fine. I even survived a few fast descents. But, I'm still a little afraid that there might be another underlying problem with this combination. However, it sounds as if many people have tired some version of my upgrade (e.g. at least using the new axle-freehub combo). I just replaced my 2003 Record freehub body with a new one (bearings were shot) on one of my wheels. I kept all the other innards. Didn't look at the partnumbers. A five minutes job. No problem. Don't put grease on the pawls. Don't use the grease port to repack the bearings. It gets messy. Take it apart. https://picasaweb.google.com/LoetjeH...aafDoorsmeren# Lou |
#3
|
|||
|
|||
Campy Freehub Replacement - any issue with the new pawls in oldhub body?
Geoff Rilling wrote:
While performing a long overdue check-up, I noticed that my 2000 era Campy Chorus freehub was cracked (worn chain, led to the replacement of cassette, led to discovery of significant cracks in the freehub). Apparently this is a common problem with the 2000-2006 freehub design on the mid to upper end Campy offerings. After reading everything I could find on the net, I decided to buy a new Record hub and transplant the new hub innards (most everything except the hub body, cups, and inner washer/seal) to the old hub body. The pawls on the new freehub have a different part number than the on the old style. Is there any known issue with the new freehub/pawl system working with the old hub body (including cups and engagement teeth)? Here's the reason for my concern.... I made several mistakes when reassembling the new hub parts in my old wheel / hub body, including: a failure to engage the bearing dust seals in the cups, and an application of heavy grease on the freehub pawls. My initial QA tests detected that the freehub pawls randomly engaged while coasting. Fortunately, I detected this issue while doing test runs on my driveway rather than coming down Old San Jose Road in a 40 mph tuck. After diagnosing the problem and fixing the seal and grease problems, the freehub seems to work fine. I even survived a few fast descents. But, I'm still a little afraid that there might be another underlying problem with this combination. However, it sounds as if many people have tired some version of my upgrade (e.g. at least using the new axle-freehub combo). You're right that the current body requires the current axle with 3-sided interface so they must go in as a set. Aside from excessive grease being a problem with this or any pawl assembly you should be good to go. The bearing adjustment is easy to overtighten. Campagnolo suggests final adjust in the bike, skewer closed; tighten just until the play is gone and lock it in place. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#4
|
|||
|
|||
Campy Freehub Replacement - any issue with the new pawls in oldhub body?
On Feb 15, 3:47*pm, Lou Holtman wrote:
Op 15-2-2011 18:46, Geoff Rilling schreef: While performing a long overdue check-up, I noticed that my 2000 era Campy Chorus freehub was cracked (worn chain, led to the replacement of cassette, led to discovery of significant cracks in the freehub). Apparently this is a common problem with the 2000-2006 freehub design on the mid to upper end Campy offerings. *After reading everything I could find on the net, I decided to buy a new Record hub and transplant the new hub innards (most everything except the hub body, cups, and inner washer/seal) to the old hub body. The pawls on the new freehub have a different part number than the on the old style. *Is there any known issue with the new freehub/pawl system working with the old hub body (including cups and engagement teeth)? Here's the reason for my concern.... *I made several mistakes when reassembling the new hub parts in my old wheel / hub body, including: a failure to engage the bearing dust seals in the cups, and an application of heavy grease on the freehub pawls. *My initial QA tests detected that the freehub pawls randomly engaged while coasting. Fortunately, I detected this issue while doing test runs on my driveway rather than coming down Old San Jose Road in a 40 mph tuck. After diagnosing the problem and fixing the seal and grease problems, the freehub seems to work fine. *I even survived a few fast descents. But, I'm still a little afraid that there might be another underlying problem with this combination. *However, it sounds as if many people have tired some version of my upgrade (e.g. at least using the new axle-freehub combo). I just replaced my 2003 Record freehub body with a new one (bearings were shot) on one of my wheels. I kept all the other innards. Didn't look at the partnumbers. A five minutes job. No problem. Don't put grease on the pawls. Don't use the grease port to repack the bearings. It gets messy. Take it apart. https://picasaweb.google.com/LoetjeH...aafDoorsmeren# Lou Dear me, you know those bearings in the freehub are replaceable.. |
#5
|
|||
|
|||
Campy Freehub Replacement - any issue with the new pawls in oldhub body?
Op 19-2-2011 14:06, Qui si parla Campagnolo schreef:
On Feb 15, 3:47 pm, Lou wrote: Op 15-2-2011 18:46, Geoff Rilling schreef: While performing a long overdue check-up, I noticed that my 2000 era Campy Chorus freehub was cracked (worn chain, led to the replacement of cassette, led to discovery of significant cracks in the freehub). Apparently this is a common problem with the 2000-2006 freehub design on the mid to upper end Campy offerings. After reading everything I could find on the net, I decided to buy a new Record hub and transplant the new hub innards (most everything except the hub body, cups, and inner washer/seal) to the old hub body. The pawls on the new freehub have a different part number than the on the old style. Is there any known issue with the new freehub/pawl system working with the old hub body (including cups and engagement teeth)? Here's the reason for my concern.... I made several mistakes when reassembling the new hub parts in my old wheel / hub body, including: a failure to engage the bearing dust seals in the cups, and an application of heavy grease on the freehub pawls. My initial QA tests detected that the freehub pawls randomly engaged while coasting. Fortunately, I detected this issue while doing test runs on my driveway rather than coming down Old San Jose Road in a 40 mph tuck. After diagnosing the problem and fixing the seal and grease problems, the freehub seems to work fine. I even survived a few fast descents. But, I'm still a little afraid that there might be another underlying problem with this combination. However, it sounds as if many people have tired some version of my upgrade (e.g. at least using the new axle-freehub combo). I just replaced my 2003 Record freehub body with a new one (bearings were shot) on one of my wheels. I kept all the other innards. Didn't look at the partnumbers. A five minutes job. No problem. Don't put grease on the pawls. Don't use the grease port to repack the bearings. It gets messy. Take it apart. https://picasaweb.google.com/LoetjeH...aafDoorsmeren# Lou Dear me, you know those bearings in the freehub are replaceable.. I know Peter and I did that once. It was a real PIA and I think Campy doesn't want you to replace the bearings in the body. The two ball bearings cost me 22 euro's then and I have the impression that they wore out faster than the original ones. A whole new body cost me now 50 euro's. The 28 euro extra saved me one hour work and a lot of bad language. Good deal ;-) Lou YMMV |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Campy Freehub Body | [email protected] | Techniques | 8 | February 3rd 09 01:53 PM |
Shimano freehub body replacement choices | [email protected] | Techniques | 17 | April 9th 07 09:29 PM |
Shimano freehub body replacement choices | charlie_brown | Techniques | 0 | April 3rd 07 06:29 PM |
WTB: Mavic freehub body for campy | clement | Marketplace | 0 | April 23rd 05 07:58 AM |
Acera Freehub Body Replacement | Steffik | Techniques | 1 | December 23rd 04 12:02 AM |