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IS Headset not adjusting correctly
I've got an alu Litespeed (Taiwan built) with an IS headset.
Problem is that I can't get the headset to adjust correctly. It's too tight (sounds like the bearing are slightly over compressed) and there's still a tiny bit of play in the headset - really annoying! Is my head tube worn, causing this play? (I suspect so) Will new bearings sort this out? (I so can these bepurchased separately from a full IS headset assembly?) I fear that new bearing will do nothing to banish the play if the head tube 45 degree bevel is worn. Any quick fix (like using a threadlock or similar between the bearing and the headtube)? (There's never been grease between the bearing unit the frame.) Thanks guys H |
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#2
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IS Headset not adjusting correctly
On Sep 12, 8:08 am, Henry wrote:
I've got an alu Litespeed (Taiwan built) with an IS headset. Problem is that I can't get the headset to adjust correctly. It's too tight (sounds like the bearing are slightly over compressed) and there's still a tiny bit of play in the headset - really annoying! Is my head tube worn, causing this play? (I suspect so) Will new bearings sort this out? (I so can these bepurchased separately from a full IS headset assembly?) I fear that new bearing will do nothing to banish the play if the head tube 45 degree bevel is worn. Any quick fix (like using a threadlock or similar between the bearing and the headtube)? (There's never been grease between the bearing unit the frame.) Thanks guys H Bearings facing the correct way..45 degree bevel towards the headtube top and bottom? If so, may be an ovalized headtube..if so you are pretty much screwed. |
#3
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IS Headset not adjusting correctly
On Sep 12, 7:08 am, Henry wrote:
I've got an alu Litespeed (Taiwan built) with an IS headset. Problem is that I can't get the headset to adjust correctly. It's too tight (sounds like the bearing are slightly over compressed) and there's still a tiny bit of play in the headset - really annoying! Is my head tube worn, causing this play? (I suspect so) Will new bearings sort this out? (I so can these bepurchased separately from a full IS headset assembly?) I fear that new bearing will do nothing to banish the play if the head tube 45 degree bevel is worn. Any quick fix (like using a threadlock or similar between the bearing and the headtube)? (There's never been grease between the bearing unit the frame.) Thanks guys H like any other bearing on the bike, integrated headsets do wear out, especially if they're ridden when not properly adjusted. how much use has the current headset seen? unless there's obvious damage to the bearing seats or something, the thing to try first is a new headset. has this problem always been there? if so, it could be a sympton that the headtube needs to be machined, meaning you'd need to find a shop that has the tools, which is not all that common at this point in time. this isn't necessarily likely but it is possible. also, if there were damage to the bearing seats, machining should usually be able to deal with it. if there is paint on the bearing seats, that could be enough to affect things, and you could possibly remove it yourself. individual replacement bearings might be somewhat attainable but not usually. but an integrated headset isn't very much beyond it's bearings, anyway. |
#4
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IS Headset not adjusting correctly
On Sep 12, 8:16 pm, Nate Knutson wrote:
On Sep 12, 7:08 am, Henry wrote: I've got an alu Litespeed (Taiwan built) with an IS headset. Problem is that I can't get the headset to adjust correctly. It's too tight (sounds like the bearing are slightly over compressed) and there's still a tiny bit of play in the headset - really annoying! Is my head tube worn, causing this play? (I suspect so) Will new bearings sort this out? (I so can these bepurchased separately from a full IS headset assembly?) I fear that new bearing will do nothing to banish the play if the head tube 45 degree bevel is worn. Any quick fix (like using a threadlock or similar between the bearing and the headtube)? (There's never been grease between the bearing unit the frame.) Thanks guys H like any other bearing on the bike, integrated headsets do wear out, especially if they're ridden when not properly adjusted. how much use has the current headset seen? unless there's obvious damage to the bearing seats or something, the thing to try first is a new headset. has this problem always been there? if so, it could be a sympton that the headtube needs to be machined, meaning you'd need to find a shop that has the tools, which is not all that common at this point in time. this isn't necessarily likely but it is possible. also, if there were damage to the bearing seats, machining should usually be able to deal with it. if there is paint on the bearing seats, that could be enough to affect things, and you could possibly remove it yourself. individual replacement bearings might be somewhat attainable but not usually. but an integrated headset isn't very much beyond it's bearings, anyway.- Hide quoted text - - Show quoted text - Yup, I think the head tube's worn and become slightly ovalised. It was never as 'sweet' as it sould have been from day one, probably should have brought it back to the lbs when I first got it. The bearings look perfect. I'll try a new headset and if the problem remains I'll have to resort to fixing the bearing to the headtube with an epoxy - drastic, but if it works I shouldn't have to worry about the headset bearings until the frame's ready for the scrap-heap. Thanks for the advice H |
#5
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IS Headset not adjusting correctly
On Sep 13, 6:39 am, Henry wrote:
On Sep 12, 8:16 pm, Nate Knutson wrote: On Sep 12, 7:08 am, Henry wrote: I've got an alu Litespeed (Taiwan built) with an IS headset. Problem is that I can't get the headset to adjust correctly. It's too tight (sounds like the bearing are slightly over compressed) and there's still a tiny bit of play in the headset - really annoying! Is my head tube worn, causing this play? (I suspect so) Will new bearings sort this out? (I so can these bepurchased separately from a full IS headset assembly?) I fear that new bearing will do nothing to banish the play if the head tube 45 degree bevel is worn. Any quick fix (like using a threadlock or similar between the bearing and the headtube)? (There's never been grease between the bearing unit the frame.) Thanks guys H like any other bearing on the bike, integrated headsets do wear out, especially if they're ridden when not properly adjusted. how much use has the current headset seen? unless there's obvious damage to the bearing seats or something, the thing to try first is a new headset. has this problem always been there? if so, it could be a sympton that the headtube needs to be machined, meaning you'd need to find a shop that has the tools, which is not all that common at this point in time. this isn't necessarily likely but it is possible. also, if there were damage to the bearing seats, machining should usually be able to deal with it. if there is paint on the bearing seats, that could be enough to affect things, and you could possibly remove it yourself. individual replacement bearings might be somewhat attainable but not usually. but an integrated headset isn't very much beyond it's bearings, anyway.- Hide quoted text - - Show quoted text - Yup, I think the head tube's worn and become slightly ovalised. It was never as 'sweet' as it sould have been from day one, probably should have brought it back to the lbs when I first got it. The bearings look perfect. I'll try a new headset and if the problem remains I'll have to resort to fixing the bearing to the headtube with an epoxy - drastic, but if it works I shouldn't have to worry about the headset bearings until the frame's ready for the scrap-heap. Thanks for the advice H Put the fork in and preload the bearings so that you get good alignment of the cups when you do this otherwise you may end up with permanently misaligned cups and a bit of difficulty steering. Also, if you really are gonna do this, use JB Weld. D'ohBoy D'ohBoy |
#6
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IS Headset not adjusting correctly
On Wed, 12 Sep 2007 07:08:02 -0700, Henry
wrote: I've got an alu Litespeed (Taiwan built) with an IS headset. Problem is that I can't get the headset to adjust correctly. It's too tight (sounds like the bearing are slightly over compressed) and there's still a tiny bit of play in the headset - really annoying! Is my head tube worn, causing this play? (I suspect so) Will new bearings sort this out? (I so can these bepurchased separately from a full IS headset assembly?) I fear that new bearing will do nothing to banish the play if the head tube 45 degree bevel is worn. Any quick fix (like using a threadlock or similar between the bearing and the headtube)? (There's never been grease between the bearing unit the frame.) Thanks guys H Integrated headsets sometimes require compensatory shims to adjust the depth of the machined headtube in order to ensure a correct fit. FSA offers a thin "microspacer" that's designed for use between top cover and compression ring to prevent the top cover from coming into contact with the top of the headtube or its bearing cup. The FSA part number is 160-3020. As I recall, there are similar spacers offered by Cane Creek/Aheadset. ------------------------------- John Dacey Business Cycles, Miami, Florida Since 1983 Comprehensive catalogue of track equipment: online since 1996 http://www.businesscycles.com ------------------------------- |
#7
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IS Headset not adjusting correctly
On Sep 13, 11:50 pm, John Dacey wrote:
On Wed, 12 Sep 2007 07:08:02 -0700, Henry wrote: I've got an alu Litespeed (Taiwan built) with an IS headset. Problem is that I can't get the headset to adjust correctly. It's too tight (sounds like the bearing are slightly over compressed) and there's still a tiny bit of play in the headset - really annoying! Is my head tube worn, causing this play? (I suspect so) Will new bearings sort this out? (I so can these bepurchased separately from a full IS headset assembly?) I fear that new bearing will do nothing to banish the play if the head tube 45 degree bevel is worn. Any quick fix (like using a threadlock or similar between the bearing and the headtube)? (There's never been grease between the bearing unit the frame.) Thanks guys H Integrated headsets sometimes require compensatory shims to adjust the depth of the machined headtube in order to ensure a correct fit. FSA offers a thin "microspacer" that's designed for use between top cover and compression ring to prevent the top cover from coming into contact with the top of the headtube or its bearing cup. The FSA part number is 160-3020. As I recall, there are similar spacers offered by Cane Creek/Aheadset. ------------------------------- John Dacey Business Cycles, Miami, Florida Since 1983 Comprehensive catalogue of track equipment: online since 1996http://www.businesscycles.com -------------------------------- Hide quoted text - - Show quoted text - Thanks John, that's the shot! Much better than permanently fixing a bearing to the frame. :-) |
#8
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IS Headset not adjusting correctly
On Sep 13, 11:50 pm, John Dacey wrote:
On Wed, 12 Sep 2007 07:08:02 -0700, Henry wrote: I've got an alu Litespeed (Taiwan built) with an IS headset. Problem is that I can't get the headset to adjust correctly. It's too tight (sounds like the bearing are slightly over compressed) and there's still a tiny bit of play in the headset - really annoying! Is my head tube worn, causing this play? (I suspect so) Will new bearings sort this out? (I so can these bepurchased separately from a full IS headset assembly?) I fear that new bearing will do nothing to banish the play if the head tube 45 degree bevel is worn. Any quick fix (like using a threadlock or similar between the bearing and the headtube)? (There's never been grease between the bearing unit the frame.) Thanks guys H Integrated headsets sometimes require compensatory shims to adjust the depth of the machined headtube in order to ensure a correct fit. FSA offers a thin "microspacer" that's designed for use between top cover and compression ring to prevent the top cover from coming into contact with the top of the headtube or its bearing cup. The FSA part number is 160-3020. As I recall, there are similar spacers offered by Cane Creek/Aheadset. ------------------------------- John Dacey Business Cycles, Miami, Florida Since 1983 Comprehensive catalogue of track equipment: online since 1996http://www.businesscycles.com -------------------------------- Hide quoted text - - Show quoted text - I saw these "microspaces" on a site, but they don't seem to have the 45 degree angle that I'd need to "repair" the bearing seat in the head tube. Anybody know if such a thing exists? |
#9
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IS Headset not adjusting correctly
"Corruat caelum!!!" - Pullus Parvus
On Fri, 14 Sep 2007 05:00:14 -0700, Henry wrote: On Sep 13, 11:50 pm, John Dacey wrote: I've got an alu Litespeed (Taiwan built) with an IS headset. Problem is that I can't get the headset to adjust correctly. It's too tight (sounds like the bearing are slightly over compressed) and there's still a tiny bit of play in the headset - really annoying! Is my head tube worn, causing this play? (I suspect so) Will new bearings sort this out? (I so can these bepurchased separately from a full IS headset assembly?) I fear that new bearing will do nothing to banish the play if the head tube 45 degree bevel is worn. Any quick fix (like using a threadlock or similar between the bearing and the headtube)? (There's never been grease between the bearing unit the frame.) Integrated headsets sometimes require compensatory shims to adjust the depth of the machined headtube in order to ensure a correct fit. FSA offers a thin "microspacer" that's designed for use between top cover and compression ring to prevent the top cover from coming into contact with the top of the headtube or its bearing cup. The FSA part number is 160-3020. As I recall, there are similar spacers offered by Cane Creek/Aheadset. I saw these "microspaces" on a site, but they don't seem to have the 45 degree angle that I'd need to "repair" the bearing seat in the head tube. Anybody know if such a thing exists? It's supremely unlikely that the cups into which the headset bearings of your frame nest are damaged. You're giving too much credence to Usenet Cassandras clucking caveats about ovalized headtubes. While such distortions are theoretically possible, they're not seen in nearly the incidence that some responders here make it seem. Take your fork out. Wipe the steerer and crown race clean. Wipe the headset cups and bearing cartridges clean. Wipe the top cover and compression ring clean. Apply a thin film of grease on all the bits you just cleaned except the fork steerer. If the bearings are compromised, replace them. Reassemble, being mindful to orient the bearing cartridges correctly. After fitting the compression ring on the steerer but before you put back the top cap, fit one or more of those microspacers on top of the compression ring. The microspacers from FSA are apparently all just ..25 mm thick, so you may need more than one to establish proper bearing preload (no play) while shimming the top cap away sufficiently (no binding). To optimize the distance, you may have to experiment through trial and reassembly with various thicknesses of spacers. ------------------------------- John Dacey Business Cycles, Miami, Florida Since 1983 Comprehensive catalogue of track equipment: online since 1996 http://www.businesscycles.com ------------------------------- |
#10
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IS Headset not adjusting correctly
On Sep 14, 7:02 pm, John Dacey wrote:
"Corruat caelum!!!" - Pullus Parvus On Fri, 14 Sep 2007 05:00:14 -0700, Henry wrote: On Sep 13, 11:50 pm, John Dacey wrote: I've got an alu Litespeed (Taiwan built) with an IS headset. Problem is that I can't get the headset to adjust correctly. It's too tight (sounds like the bearing are slightly over compressed) and there's still a tiny bit of play in the headset - really annoying! Is my head tube worn, causing this play? (I suspect so) Will new bearings sort this out? (I so can these bepurchased separately from a full IS headset assembly?) I fear that new bearing will do nothing to banish the play if the head tube 45 degree bevel is worn. Any quick fix (like using a threadlock or similar between the bearing and the headtube)? (There's never been grease between the bearing unit the frame.) Integrated headsets sometimes require compensatory shims to adjust the depth of the machined headtube in order to ensure a correct fit. FSA offers a thin "microspacer" that's designed for use between top cover and compression ring to prevent the top cover from coming into contact with the top of the headtube or its bearing cup. The FSA part number is 160-3020. As I recall, there are similar spacers offered by Cane Creek/Aheadset. I saw these "microspaces" on a site, but they don't seem to have the 45 degree angle that I'd need to "repair" the bearing seat in the head tube. Anybody know if such a thing exists? It's supremely unlikely that the cups into which the headset bearings of your frame nest are damaged. You're giving too much credence to Usenet Cassandras clucking caveats about ovalized headtubes. While such distortions are theoretically possible, they're not seen in nearly the incidence that some responders here make it seem. Take your fork out. Wipe the steerer and crown race clean. Wipe the headset cups and bearing cartridges clean. Wipe the top cover and compression ring clean. Apply a thin film of grease on all the bits you just cleaned except the fork steerer. If the bearings are compromised, replace them. Reassemble, being mindful to orient the bearing cartridges correctly. After fitting the compression ring on the steerer but before you put back the top cap, fit one or more of those microspacers on top of the compression ring. The microspacers from FSA are apparently all just .25 mm thick, so you may need more than one to establish proper bearing preload (no play) while shimming the top cap away sufficiently (no binding). To optimize the distance, you may have to experiment through trial and reassembly with various thicknesses of spacers. ------------------------------- John Dacey Business Cycles, Miami, Florida Since 1983 Comprehensive catalogue of track equipment: online since 1996http://www.businesscycles.com -------------------------------- Hide quoted text - - Show quoted text - I have sufficient spacing at the top end, the bottom end tight - probably 1mm gap between head tube and fork. Do you grease the outside of the bearings when inserting them into the frame? (I have always inserted the bearing units into the head clean without any grease). Would grease between the bearing unit and the frame not promote movement, and as a result, wear of the bearing seats in the head tube? Next step is definitely a new headset. Though as I've just become a dad for the first time, it's not a priority. The winter bike's out already! |
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