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#11
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No keyed washer on headset
Rick Warner wrote:
Thanks all for the comments on the washer. I can live without a key, just was curious that this never had one. I have cleaned the frame, coated inside of tubes with framesaver and starting to put it back together. The headset had bearings in retainers top and bottom, 20 x 5/32". Not quite sure of the year or model of headset, but the bike is early 90's and the components all look to be Campy Athena so I assume that the headset it likely from the gruppo (anyway to confirm?). Anyway, the headset does not seem to fit correctly with those retainer bearings; as tight as I can wrench it it still seems to need to be tightened a bit more. I suspect that at least the lower race had larger bearings (3/16" ?) originally. Anyone know? Any way to find out? Early 90s? Campagnolo had not yet developed big bearing on bottom/ small bearing on top headsets yet. If it is a Campagnolo headset the pieces will say so. Many manufacturers use offbrand headsets in otherwise Campagnolo bikes. If it doesn't feel right, you might get another opinion about the ball size and count. We've discussed here recently that bearing retainers are commonly flipped over, too. -- Andrew Muzi www.yellowjersey.org Open every day since 1 April, 1971 |
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#12
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No keyed washer on headset
Rick Warner wrote:
Thanks all for the comments on the washer. I can live without a key, just was curious that this never had one. I have cleaned the frame, coated inside of tubes with framesaver and starting to put it back together. The headset had bearings in retainers top and bottom, 20 x 5/32". Not quite sure of the year or model of headset, but the bike is early 90's and the components all look to be Campy Athena so I assume that the headset it likely from the gruppo (anyway to confirm?). Anyway, the headset does not seem to fit correctly with those retainer bearings; as tight as I can wrench it it still seems to need to be tightened a bit more. I suspect that at least the lower race had larger bearings (3/16" ?) originally. Anyone know? Any way to find out? Early 90s? Campagnolo had not yet developed big bearing on bottom/ small bearing on top headsets yet. If it is a Campagnolo headset the pieces will say so. Many manufacturers use offbrand headsets in otherwise Campagnolo bikes. If it doesn't feel right, you might get another opinion about the ball size and count. We've discussed here recently that bearing retainers are commonly flipped over, too. -- Andrew Muzi www.yellowjersey.org Open every day since 1 April, 1971 |
#13
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No keyed washer on headset
all look to be Campy Athena so I assume that the headset is likely from the gruppo (anyway to confirm?). I've been playing with some 1970's / 1980's nuovo record and triomphe headsets recently. if you clean the top of the ball bearing retainer and look at it carefully, it should say "brev campagnolo italy" if its campy. otherwise its generic. The only other place it probably says campy if its a lower-end model, such as victory / triomphe /athena, is if you removed the races from the head tube and look at the outside of the top race. the "brev campagnolo italy" is normally pressed up against the inside of your head tube where nobody can ever see it. victory/tiomph crown races don't say anything on the bottom ; nuovo record ones identify as brev campagnolo italy. - Don Gillies San Diego, CA |
#14
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No keyed washer on headset
all look to be Campy Athena so I assume that the headset is likely from the gruppo (anyway to confirm?). I've been playing with some 1970's / 1980's nuovo record and triomphe headsets recently. if you clean the top of the ball bearing retainer and look at it carefully, it should say "brev campagnolo italy" if its campy. otherwise its generic. The only other place it probably says campy if its a lower-end model, such as victory / triomphe /athena, is if you removed the races from the head tube and look at the outside of the top race. the "brev campagnolo italy" is normally pressed up against the inside of your head tube where nobody can ever see it. victory/tiomph crown races don't say anything on the bottom ; nuovo record ones identify as brev campagnolo italy. - Don Gillies San Diego, CA |
#15
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No keyed washer on headset
A Muzi wrote in message ...
Rick Warner wrote: Early 90s? Campagnolo had not yet developed big bearing on bottom/ small bearing on top headsets yet. If it is a Campagnolo headset the pieces will say so. Many manufacturers use offbrand headsets in otherwise Campagnolo bikes. If it doesn't feel right, you might get another opinion about the ball size and count. We've discussed here recently that bearing retainers are commonly flipped over, too. Thanks for the input. I know which way the retainers go, and they were correct. Over the weekend I replaced them with 5/32" loose balls, and the issue is the same. Perhaps I will just get it as tight as I can and let it go at that for a while, and eventually replace it with a known entity. - rick |
#16
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No keyed washer on headset
A Muzi wrote in message ...
Rick Warner wrote: Early 90s? Campagnolo had not yet developed big bearing on bottom/ small bearing on top headsets yet. If it is a Campagnolo headset the pieces will say so. Many manufacturers use offbrand headsets in otherwise Campagnolo bikes. If it doesn't feel right, you might get another opinion about the ball size and count. We've discussed here recently that bearing retainers are commonly flipped over, too. Thanks for the input. I know which way the retainers go, and they were correct. Over the weekend I replaced them with 5/32" loose balls, and the issue is the same. Perhaps I will just get it as tight as I can and let it go at that for a while, and eventually replace it with a known entity. - rick |
#17
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No keyed washer on headset
Rick Warner writes:
Early 90s? Campagnolo had not yet developed big bearing on bottom/ small bearing on top headsets yet. If it is a Campagnolo headset the pieces will say so. Many manufacturers use off brand headsets in otherwise Campagnolo bikes. If it doesn't feel right, you might get another opinion about the ball size and count. We've discussed here recently that bearing retainers are commonly flipped over, too. I think you mean the ball cage and these only fit one way with 20 balls on those Campagnolo bearings. Thanks for the input. I know which way the retainers go, and they were correct. Over the weekend I replaced them with 5/32" loose balls, and the issue is the same. Perhaps I will just get it as tight as I can and let it go at that for a while, and eventually replace it with a known entity. I don't know what you mean by "as tight as I can" but the head bearing should be adjusted so that it turns freely between fingertips (without the wheel and handlebars attached to the fork. The closest way to approach that without removing the bars and wheel is to lift the bicycle tilted forward just enough so that the front wheel lazily swings to center with the bearing adjusted so that it does not chatter when bouncing the front wheel on the floor. This routine requires some skill but it is a lot faster than taking the bars and wheel off to do it the precise way. This will also reveal an indexed bearing because when it doesn't chatter it will index, coming to an oscillating stop in a set of dimples. The trick is to not tilt the bicycle farther forward than just enough to make a properly adjusted bearing swing from side to side, other wise it won't reveal whether the bearing is too tight. http://draco.acs.uci.edu/rbfaq/FAQ/8f.13.html Jobst Brandt |
#18
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No keyed washer on headset
Rick Warner writes:
Early 90s? Campagnolo had not yet developed big bearing on bottom/ small bearing on top headsets yet. If it is a Campagnolo headset the pieces will say so. Many manufacturers use off brand headsets in otherwise Campagnolo bikes. If it doesn't feel right, you might get another opinion about the ball size and count. We've discussed here recently that bearing retainers are commonly flipped over, too. I think you mean the ball cage and these only fit one way with 20 balls on those Campagnolo bearings. Thanks for the input. I know which way the retainers go, and they were correct. Over the weekend I replaced them with 5/32" loose balls, and the issue is the same. Perhaps I will just get it as tight as I can and let it go at that for a while, and eventually replace it with a known entity. I don't know what you mean by "as tight as I can" but the head bearing should be adjusted so that it turns freely between fingertips (without the wheel and handlebars attached to the fork. The closest way to approach that without removing the bars and wheel is to lift the bicycle tilted forward just enough so that the front wheel lazily swings to center with the bearing adjusted so that it does not chatter when bouncing the front wheel on the floor. This routine requires some skill but it is a lot faster than taking the bars and wheel off to do it the precise way. This will also reveal an indexed bearing because when it doesn't chatter it will index, coming to an oscillating stop in a set of dimples. The trick is to not tilt the bicycle farther forward than just enough to make a properly adjusted bearing swing from side to side, other wise it won't reveal whether the bearing is too tight. http://draco.acs.uci.edu/rbfaq/FAQ/8f.13.html Jobst Brandt |
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