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#1
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Chinese Carbon Wheelset
On Tuesday I was trying out my LeMond on a 40 mile 3500 feet of climbing ride. On the return trip I hit a bump and it made a horrible sound. It sounded like the rear carbon rim had broken. But the when seemed to roll fine. When I got home I knocked on the rim and it rattled in a couple of spots so I assumed it was delaminating.
I finally figured out that it wasn't the wheels. When I hit a hard bump the sear post would move and this made that noise. Perhaps also because the headset is new it has a little slack that needs to be taken up now that it has been ridden. This isn't unusual for aluminum headsets where all of the components have to seat together. Anyway, I rode it again today but with a set of Campy aluminum wheels. In one point it again made that noise and it appears that it was the seat post moving. Think that I'll throw away that Campy Carbon seatpost and install an aluminum one. |
#2
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Chinese Carbon Wheelset
On 23/8/19 8:13 am, Tom Kunich wrote:
On Tuesday I was trying out my LeMond on a 40 mile 3500 feet of climbing ride. On the return trip I hit a bump and it made a horrible sound. It sounded like the rear carbon rim had broken. But the when seemed to roll fine. When I got home I knocked on the rim and it rattled in a couple of spots so I assumed it was delaminating. I finally figured out that it wasn't the wheels. When I hit a hard bump the sear post would move and this made that noise. Perhaps also because the headset is new it has a little slack that needs to be taken up now that it has been ridden. This isn't unusual for aluminum headsets where all of the components have to seat together. Anyway, I rode it again today but with a set of Campy aluminum wheels. In one point it again made that noise and it appears that it was the seat post moving. Think that I'll throw away that Campy Carbon seatpost and install an aluminum one. Not that I have used a carbon post, stem, bars or steerer, but I hear that it is usual to apply some friction goo to clamps so that the clamp grips without squashing the carbon tube or stripping a thread. At a pinch I hear tooth paste can be useful. -- JS |
#3
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Chinese Carbon Wheelset
On 8/23/2019 5:45 PM, James wrote:
On 23/8/19 8:13 am, Tom Kunich wrote: On Tuesday I was trying out my LeMond on a 40 mile 3500 feet of climbing ride. On the return trip I hit a bump and it made a horrible sound. It sounded like the rear carbon rim had broken. But the when seemed to roll fine. When I got home I knocked on the rim and it rattled in a couple of spots so I assumed it was delaminating. I finally figured out that it wasn't the wheels. When I hit a hard bump the sear post would move and this made that noise. Perhaps also because the headset is new it has a little slack that needs to be taken up now that it has been ridden. This isn't unusual for aluminum headsets where all of the components have to seat together. Anyway, I rode it again today but with a set of Campy aluminum wheels. In one point it again made that noise and it appears that it was the seat post moving. Think that I'll throw away that Campy Carbon seatpost and install an aluminum one. Not that I have used a carbon post, stem, bars or steerer, but I hear that it is usual to apply some friction goo to clamps so that the clamp grips without squashing the carbon tube or stripping a thread. At a pinch I hear tooth paste can be useful. The "friction goo" is usually called "carbon paste." And conversely, a fan of ultra-light bike touring might wonder: Can one brush one's teeth with carbon paste? -- - Frank Krygowski |
#4
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Chinese Carbon Wheelset
On Friday, August 23, 2019 at 6:23:04 PM UTC-7, Frank Krygowski wrote:
On 8/23/2019 5:45 PM, James wrote: On 23/8/19 8:13 am, Tom Kunich wrote: On Tuesday I was trying out my LeMond on a 40 mile 3500 feet of climbing ride. On the return trip I hit a bump and it made a horrible sound. It sounded like the rear carbon rim had broken. But the when seemed to roll fine. When I got home I knocked on the rim and it rattled in a couple of spots so I assumed it was delaminating. I finally figured out that it wasn't the wheels. When I hit a hard bump the sear post would move and this made that noise. Perhaps also because the headset is new it has a little slack that needs to be taken up now that it has been ridden. This isn't unusual for aluminum headsets where all of the components have to seat together. Anyway, I rode it again today but with a set of Campy aluminum wheels. In one point it again made that noise and it appears that it was the seat post moving. Think that I'll throw away that Campy Carbon seatpost and install an aluminum one. Not that I have used a carbon post, stem, bars or steerer, but I hear that it is usual to apply some friction goo to clamps so that the clamp grips without squashing the carbon tube or stripping a thread. At a pinch I hear tooth paste can be useful. The "friction goo" is usually called "carbon paste." And conversely, a fan of ultra-light bike touring might wonder: Can one brush one's teeth with carbon paste? No, but one could use toothpaste as fiber paste. You could also lube your chain with mouthwash, after flossing each link. -- Jay Beattie. |
#5
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Chinese Carbon Wheelset
On Fri, 23 Aug 2019 21:22:45 -0400, Frank Krygowski
wrote: On 8/23/2019 5:45 PM, James wrote: On 23/8/19 8:13 am, Tom Kunich wrote: On Tuesday I was trying out my LeMond on a 40 mile 3500 feet of climbing ride. On the return trip I hit a bump and it made a horrible sound. It sounded like the rear carbon rim had broken. But the when seemed to roll fine. When I got home I knocked on the rim and it rattled in a couple of spots so I assumed it was delaminating. I finally figured out that it wasn't the wheels. When I hit a hard bump the sear post would move and this made that noise. Perhaps also because the headset is new it has a little slack that needs to be taken up now that it has been ridden. This isn't unusual for aluminum headsets where all of the components have to seat together. Anyway, I rode it again today but with a set of Campy aluminum wheels. In one point it again made that noise and it appears that it was the seat post moving. Think that I'll throw away that Campy Carbon seatpost and install an aluminum one. Not that I have used a carbon post, stem, bars or steerer, but I hear that it is usual to apply some friction goo to clamps so that the clamp grips without squashing the carbon tube or stripping a thread. At a pinch I hear tooth paste can be useful. The "friction goo" is usually called "carbon paste." And conversely, a fan of ultra-light bike touring might wonder: Can one brush one's teeth with carbon paste? Well... at $12.49 a 4 oz tube it does seem a bit expensive. -- cheers, John B. |
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