Unobtainium headset size?

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This summer I took apart my old mountain bike to do a rebuild. It is a Raleigh Legend, from Raleigh Canada, circa 1994. When I got to the headset, I looked for a replacement but it seems the combination doesn't exist. It is a 1" threaded headset, but the diameter of the pressed-in part of the cups (and corresponding ID of ends of headtube) is 34mm. It seems headsets for 1" are intended for 30mm cups, and to get 34mm cups the headset is based on 1-1/8". I thought perhaps there would be a way to deal with this with circular shims, and I do recall seeing some online, but as I remember there was still an issue with the crown race ID, so in the end I reused the headset parts but replaced the balls.



So the question is, is the only way to put a new headset on this bike to replace the fork with one that has 1-1/8" steerer tube (which also means new stem and possibly handlebar)?






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    This summer I took apart my old mountain bike to do a rebuild. It is a Raleigh Legend, from Raleigh Canada, circa 1994. When I got to the headset, I looked for a replacement but it seems the combination doesn't exist. It is a 1" threaded headset, but the diameter of the pressed-in part of the cups (and corresponding ID of ends of headtube) is 34mm. It seems headsets for 1" are intended for 30mm cups, and to get 34mm cups the headset is based on 1-1/8". I thought perhaps there would be a way to deal with this with circular shims, and I do recall seeing some online, but as I remember there was still an issue with the crown race ID, so in the end I reused the headset parts but replaced the balls.



    So the question is, is the only way to put a new headset on this bike to replace the fork with one that has 1-1/8" steerer tube (which also means new stem and possibly handlebar)?






    headset







    share|improve this question























      up vote
      4
      down vote

      favorite









      up vote
      4
      down vote

      favorite











      This summer I took apart my old mountain bike to do a rebuild. It is a Raleigh Legend, from Raleigh Canada, circa 1994. When I got to the headset, I looked for a replacement but it seems the combination doesn't exist. It is a 1" threaded headset, but the diameter of the pressed-in part of the cups (and corresponding ID of ends of headtube) is 34mm. It seems headsets for 1" are intended for 30mm cups, and to get 34mm cups the headset is based on 1-1/8". I thought perhaps there would be a way to deal with this with circular shims, and I do recall seeing some online, but as I remember there was still an issue with the crown race ID, so in the end I reused the headset parts but replaced the balls.



      So the question is, is the only way to put a new headset on this bike to replace the fork with one that has 1-1/8" steerer tube (which also means new stem and possibly handlebar)?






      headset







      share|improve this question













      This summer I took apart my old mountain bike to do a rebuild. It is a Raleigh Legend, from Raleigh Canada, circa 1994. When I got to the headset, I looked for a replacement but it seems the combination doesn't exist. It is a 1" threaded headset, but the diameter of the pressed-in part of the cups (and corresponding ID of ends of headtube) is 34mm. It seems headsets for 1" are intended for 30mm cups, and to get 34mm cups the headset is based on 1-1/8". I thought perhaps there would be a way to deal with this with circular shims, and I do recall seeing some online, but as I remember there was still an issue with the crown race ID, so in the end I reused the headset parts but replaced the balls.



      So the question is, is the only way to put a new headset on this bike to replace the fork with one that has 1-1/8" steerer tube (which also means new stem and possibly handlebar)?






      headset




      headset






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      asked 2 hours ago









      Gaston

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          The product you are looking for is called "headtube adaptor" or "headset reducer". Once you know the name, you should be able to find them online.



          If the headset is in good shape, there should be no reason to replace it. Rebuild usually refers to cleaning, greasing and adjustment, and possibly replacing bearing balls.






          share|improve this answer






















          • Ah yes I see now. Initially my thinking was trying to shim the steerer tube to increase its size. Makes more sense to shim the headtube down in size.
            – Gaston
            1 hour ago










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          1 Answer
          1






          active

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          active

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          up vote
          4
          down vote













          The product you are looking for is called "headtube adaptor" or "headset reducer". Once you know the name, you should be able to find them online.



          If the headset is in good shape, there should be no reason to replace it. Rebuild usually refers to cleaning, greasing and adjustment, and possibly replacing bearing balls.






          share|improve this answer






















          • Ah yes I see now. Initially my thinking was trying to shim the steerer tube to increase its size. Makes more sense to shim the headtube down in size.
            – Gaston
            1 hour ago














          up vote
          4
          down vote













          The product you are looking for is called "headtube adaptor" or "headset reducer". Once you know the name, you should be able to find them online.



          If the headset is in good shape, there should be no reason to replace it. Rebuild usually refers to cleaning, greasing and adjustment, and possibly replacing bearing balls.






          share|improve this answer






















          • Ah yes I see now. Initially my thinking was trying to shim the steerer tube to increase its size. Makes more sense to shim the headtube down in size.
            – Gaston
            1 hour ago












          up vote
          4
          down vote










          up vote
          4
          down vote









          The product you are looking for is called "headtube adaptor" or "headset reducer". Once you know the name, you should be able to find them online.



          If the headset is in good shape, there should be no reason to replace it. Rebuild usually refers to cleaning, greasing and adjustment, and possibly replacing bearing balls.






          share|improve this answer














          The product you are looking for is called "headtube adaptor" or "headset reducer". Once you know the name, you should be able to find them online.



          If the headset is in good shape, there should be no reason to replace it. Rebuild usually refers to cleaning, greasing and adjustment, and possibly replacing bearing balls.







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 1 hour ago









          David Richerby

          8,75322848




          8,75322848










          answered 1 hour ago









          ojs

          10.9k21938




          10.9k21938











          • Ah yes I see now. Initially my thinking was trying to shim the steerer tube to increase its size. Makes more sense to shim the headtube down in size.
            – Gaston
            1 hour ago
















          • Ah yes I see now. Initially my thinking was trying to shim the steerer tube to increase its size. Makes more sense to shim the headtube down in size.
            – Gaston
            1 hour ago















          Ah yes I see now. Initially my thinking was trying to shim the steerer tube to increase its size. Makes more sense to shim the headtube down in size.
          – Gaston
          1 hour ago




          Ah yes I see now. Initially my thinking was trying to shim the steerer tube to increase its size. Makes more sense to shim the headtube down in size.
          – Gaston
          1 hour ago

















           

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