Last Fall I converted my friction shifting bike over to Campy Ergo. I have an all Centaur Triple group with the exception of a Chorus crankset and bottom bracket. I have about 700 miles on the new drive train and it shifts perfectly but I am experiencing a strange noise from the crank area. Occasionally when I stop pedaling for a few seconds and then start up again, there is a sound that is almost like a metalic object striking the crankset. Besides the sound, I can feel the vibration through the pedals. Other riders can hear it several feet away. It is quite loud. It seems to mainly occur when I am in the middle chainring and it does not matter what cog I am on in the back. The bottom bracket has been checked as well as the chainring bolts and pedals. All are torqued properly. The Campy chain has been lubricated every 75 miles with White Lightning. Has anyone experience this? My experience goes back to the friction shifting days and I know very little about these new systems. The bike is a 1979 Gios Torino Super Record.
Last Fall I converted my friction shifting bike over to Campy Ergo. I have an all Centaur Triple group with the exception of a Chorus crankset and bottom bracket. I have about 700 miles on the new drive train and it shifts perfectly but I am experiencing a strange noise from the crank area. Occasionally when I stop pedaling for a few seconds and then start up again, there is a sound that is almost like a metalic object striking the crankset. Besides the sound, I can feel the vibration through the pedals. Other riders can hear it several feet away. It is quite loud. It seems to mainly occur when I am in the middle chainring and it does not matter what cog I am on in the back. The bottom bracket has been checked as well as the chainring bolts and pedals. All are torqued properly. The Campy chain has been lubricated every 75 miles with White Lightning. Has anyone experience this? My experience goes back to the friction shifting days and I know very little about these new systems. The bike is a 1979 Gios Torino Super Record.
That's usually a fastener. When you 'checked the chainring bolts', did you grease the thread? Ditto for BB cups if it isn't the chainring bolts. An experienced mechanic can usually tell you from the tone of the click which it is.
-- Andrew Muzi www.yellowjersey.org Open every day since 1 April, 1971
Last Fall I converted my friction shifting bike over to Campy Ergo. I have an all Centaur Triple group with the exception of a Chorus crankset and bottom bracket. I have about 700 miles on the new drive train and it shifts perfectly but I am experiencing a strange noise from the crank area. Occasionally when I stop pedaling for a few seconds and then start up again, there is a sound that is almost like a metalic object striking the crankset. Besides the sound, I can feel the vibration through the pedals. Other riders can hear it several feet away. It is quite loud. It seems to mainly occur when I am in the middle chainring and it does not matter what cog I am on in the back. The bottom bracket has been checked as well as the chainring bolts and pedals. All are torqued properly. The Campy chain has been lubricated every 75 miles with White Lightning. Has anyone experience this? My experience goes back to the friction shifting days and I know very little about these new systems. The bike is a 1979 Gios Torino Super Record.
Neal
I had the same thing on my chorus double Crank/bb. Always thought it was strange, especially feeling that little bump vibe, like the thing was loose or something. Asked on the newsgroup before, answers were mostly what you would expect...remove, torque correctly etc. Believe me, I tried everything. Could never work it out. Hit by car and totaled before ever finding the cause. Next bike has different crankset. Good luck
Last Fall I converted my friction shifting bike over to Campy Ergo. I have an all Centaur Triple group with the exception of a Chorus crankset and bottom bracket. I have about 700 miles on the new drive train and it shifts perfectly but I am experiencing a strange noise from the crank area. Occasionally when I stop pedaling for a few seconds and then start up again, there is a sound that is almost like a metalic object striking the crankset. Besides the sound, I can feel the vibration through the pedals. Other riders can hear it several feet away. It is quite loud. It seems to mainly occur when I am in the middle chainring and it does not matter what cog I am on in the back. The bottom bracket has been checked as well as the chainring bolts and pedals. All are torqued properly. The Campy chain has been lubricated every 75 miles with White Lightning. Has anyone experience this? My experience goes back to the friction shifting days and I know very little about these new systems. The bike is a 1979 Gios Torino Super Record.
Neal
Sounds like something I experienced. I checked everything to make sure they were tight. I could have sworn it was coming form the crank/bb area. It turns out that my cassette lockring was not tightened enough.
Last Fall I converted my friction shifting bike over to Campy Ergo. I have an all Centaur Triple group with the exception of a Chorus crankset and bottom bracket. I have about 700 miles on the new drive train and it shifts perfectly but I am experiencing a strange noise from the crank area. Occasionally when I stop pedaling for a few seconds and then start up again, there is a sound that is almost like a metalic object striking the crankset. Besides the sound, I can feel the vibration through the pedals. Other riders can hear it several feet away. It is quite loud. It seems to mainly occur when I am in the middle chainring and it does not matter what cog I am on in the back. The bottom bracket has been checked as well as the chainring bolts and pedals. All are torqued properly. The Campy chain has been lubricated every 75 miles with White Lightning. Has anyone experience this? My experience goes back to the friction shifting days and I know very little about these new systems. The bike is a 1979 Gios Torino Super Record.
Neal
Sounds like something I experienced. I checked everything to make sure they were tight. I could have sworn it was coming form the crank/bb area. It turns out that my cassette lockring was not tightened enough.
Kenny
I also did the same...my lockring also needed tightening, but the problem was still there. I never considered the rear hub pawls being bad, as Peter suggested.
"jimc" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
Kenny said:
Neal said:
Last Fall I converted my friction shifting bike over to Campy Ergo. I have an all Centaur Triple group with the exception of a Chorus crankset and bottom bracket. I have about 700 miles on the new drive train and it shifts perfectly but I am experiencing a strange noise from the crank area. Occasionally when I stop pedaling for a few seconds and then start up again, there is a sound that is almost like a metalic object striking the crankset. Besides the sound, I can feel the vibration through the pedals. Other riders can hear it several feet away. It is quite loud. It seems to mainly occur when I am in the middle chainring and it does not matter what cog I am on in the back. The bottom bracket has been checked as well as the chainring bolts and pedals. All are torqued properly. The Campy chain has been lubricated every 75 miles with White Lightning. Has anyone experience this? My experience goes back to the friction shifting days and I know very little about these new systems. The bike is a 1979 Gios Torino Super Record.
Neal
Sounds like something I experienced. I checked everything to make sure they were tight. I could have sworn it was coming form the crank/bb area. It turns out that my cassette lockring was not tightened enough.
Kenny
I also did the same...my lockring also needed tightening, but the problem was still there. I never considered the rear hub pawls being bad, as Peter suggested.
jimc
I rechecked everything today. I removed the BB and it looked fine. The chainring bolts were all tight too. The pedals also. I did find that the cassette lock ring was not torqued to specs. I have my doubts whether it was loose enough to cause that loud of noise. I'll try it tomorrow when the rain stops. The wheels were purchased when I did the upgrade so they only have 700 miles on them. Can a chain cause this problem. The sound can be duplicated if you lightly tap the big chainring with a wrench. Really strange
"jimc" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
Kenny said:
Neal wrote:
> Last Fall I converted my friction shifting bike over to Campy Ergo. I > have an all Centaur Triple group with the exception of a Chorus > crankset and bottom bracket. I have about 700 miles on the new drive > train and it shifts perfectly but I am experiencing a strange noise > from the crank area. Occasionally when I stop pedaling for a few > seconds and then start up again, there is a sound that is almost like a > metalic object striking the crankset. Besides the sound, I can feel the > vibration through the pedals. Other riders can hear it several feet > away. It is quite loud. It seems to mainly occur when I am in the > middle chainring and it does not matter what cog I am on in the back.
And then added:
Quoted message said:
I rechecked everything today. I removed the BB and it looked fine. The chainring bolts were all tight too. The pedals also. I did find that the cassette lock ring was not torqued to specs. I have my doubts whether it was loose enough to cause that loud of noise. I'll try it tomorrow when the rain stops. The wheels were purchased when I did the upgrade so they only have 700 miles on them. Can a chain cause this problem. The sound can be duplicated if you lightly tap the big chainring with a wrench. Really strange
Neal
Dave recalled: Neal, The older Campy 10s chain used a connecting link that had rather soft pins. After several hundred or several thousand (depended on hills) miles they would make a loud click every time they came under load at the rear sprocket. This sound came from the crank which could really be likened to a sounding board in this case.
That sound drove me crazy for about 2000 miles before Peter helped me figure out and correct it by using a newer connecting link.
"Neal" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
Last Fall I converted my friction shifting bike over to Campy Ergo. I
have an
Quoted message said:
all Centaur Triple group with the exception of a Chorus crankset and
bottom
Quoted message said:
bracket. I have about 700 miles on the new drive train and it shifts
perfectly
Quoted message said:
but I am experiencing a strange noise from the crank area. Occasionally
when I
Quoted message said:
stop pedaling for a few seconds and then start up again, there is a sound
that
Quoted message said:
is almost like a metalic object striking the crankset. Besides the sound,
I can
Quoted message said:
feel the vibration through the pedals. Other riders can hear it several
feet
Quoted message said:
away. It is quite loud. It seems to mainly occur when I am in the middle chainring and it does not matter what cog I am on in the back. The bottom bracket has been checked as well as the chainring bolts and pedals. All
are
Quoted message said:
torqued properly. The Campy chain has been lubricated every 75 miles with
White
Quoted message said:
Lightning. Has anyone experience this? My experience goes back to the
friction
Quoted message said:
shifting days and I know very little about these new systems. The bike is
a
Quoted message said:
1979 Gios Torino Super Record.
Neal
I had a similar problem and checked all of the same things people have suggested. It turned out to be the connecting link I was using on the Campy chain. I changed to Wipperman chains with their connecting link and have not had that problem since.
"Frank Knox" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
"Neal" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
Last Fall I converted my friction shifting bike over to Campy Ergo. I
have an
Quoted message said:
all Centaur Triple group with the exception of a Chorus crankset and
bottom
Quoted message said:
bracket. I have about 700 miles on the new drive train and it shifts
perfectly
Quoted message said:
but I am experiencing a strange noise from the crank area. Occasionally
when I
Quoted message said:
stop pedaling for a few seconds and then start up again, there is a sound
that
Quoted message said:
is almost like a metalic object striking the crankset. Besides the sound,
I can
Quoted message said:
feel the vibration through the pedals. Other riders can hear it several
feet
Quoted message said:
away. It is quite loud. It seems to mainly occur when I am in the middle chainring and it does not matter what cog I am on in the back. The bottom bracket has been checked as well as the chainring bolts and pedals. All
are
Quoted message said:
torqued properly. The Campy chain has been lubricated every 75 miles with
White
Quoted message said:
Lightning. Has anyone experience this? My experience goes back to the
friction
Quoted message said:
shifting days and I know very little about these new systems. The bike is
a
Quoted message said:
1979 Gios Torino Super Record.
Neal
I had a similar problem and checked all of the same things people have suggested. It turned out to be the connecting link I was using on the Campy chain. I changed to Wipperman chains with their connecting link and have not had that problem since.
I have tried everything recommended with no improvemnet and I am thinking now that it may be a problem such as you suggest. The chain is a Campy chain with less than 900 miles on it. Do the Wipperman chains perform better than the Campy chains? Is the link easy to open?
"Neal" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
"Frank Knox" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
"Neal" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
Last Fall I converted my friction shifting bike over to Campy Ergo. I
have an
Quoted message said:
all Centaur Triple group with the exception of a Chorus crankset and
bottom
Quoted message said:
bracket. I have about 700 miles on the new drive train and it shifts
perfectly
Quoted message said:
but I am experiencing a strange noise from the crank area.
Occasionally
Quoted message said:
Quoted message said:
when I
Quoted message said:
stop pedaling for a few seconds and then start up again, there is a
sound
Quoted message said:
Quoted message said:
that
Quoted message said:
is almost like a metalic object striking the crankset. Besides the
sound,
Quoted message said:
Quoted message said:
I can
Quoted message said:
feel the vibration through the pedals. Other riders can hear it
several
Quoted message said:
Quoted message said:
feet
Quoted message said:
away. It is quite loud. It seems to mainly occur when I am in the
middle
Quoted message said:
Quoted message said:
Quoted message said:
chainring and it does not matter what cog I am on in the back. The
bottom
Quoted message said:
Quoted message said:
Quoted message said:
bracket has been checked as well as the chainring bolts and pedals.
All
Quoted message said:
Quoted message said:
are
Quoted message said:
torqued properly. The Campy chain has been lubricated every 75 miles
with
Quoted message said:
Quoted message said:
White
Quoted message said:
Lightning. Has anyone experience this? My experience goes back to the
friction
Quoted message said:
shifting days and I know very little about these new systems. The bike
is
Quoted message said:
Quoted message said:
a
Quoted message said:
1979 Gios Torino Super Record.
Neal
I had a similar problem and checked all of the same things people have suggested. It turned out to be the connecting link I was using on the
Campy
Quoted message said:
Quoted message said:
chain. I changed to Wipperman chains with their connecting link and
have
Quoted message said:
Quoted message said:
not had that problem since.
I have tried everything recommended with no improvemnet and I am thinking
now
Quoted message said:
that it may be a problem such as you suggest. The chain is a Campy chain
with
Quoted message said:
less than 900 miles on it. Do the Wipperman chains perform better than
the
Quoted message said:
Campy chains? Is the link easy to open?
Neal
The Wipperman chains are silent, shift well, and last a long time if you keep them clean. The link is secure and very easy to open with no tools. I get them from Lickton's for a reasonable price. http://www.lickbike.com/
neal-<< Occasionally when I stop pedaling for a few seconds and then start up again, there is a sound that is almost like a metalic object striking the crankset. >><BR><BR>
I would check the freehub. Sounds like perhaps one of the pawls is not engaging properly.
Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302 (303)440-3535 http://www.vecchios.com "Ruote convenzionali costruite eccezionalmente bene"
"Qui si parla Campagnolo " <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
neal-<< Occasionally when I stop pedaling for a few seconds and then start up again, there is a sound that is almost like a metalic object striking the crankset. >><BR><BR>
I would check the freehub. Sounds like perhaps one of the pawls is not engaging properly.
Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302 (303)440-3535 http://www.vecchios.com "Ruote convenzionali costruite eccezionalmente bene"
I think you are correct about the source of the noise. The LBS agrees with you too. These are Bontrager Race lite wheels and Trek is sending a replacement freehub this week. Hopefully the replacement will solve the problem.
