Stem digging in the steering tube
05-07-22, 04:26 PM
#51
Senior Member
Thread Starter
So as you push it down you will see that ‘cut’/gap get narrower. 3) So!…put your fork back on and tap that collar down into place (you can see how it slides in and tightens up) and then put on your stem (if you put spacers in first, make sure they are narrow/thin enough to ONLY touch that collar and not the bearing
I am still investigating, as I might decide to add a thin layer of carbon fiber in affected area, to come back to 28.6 mm diameter. But first, I must figure out how to make whole headset to work properly and identify whether that broken thin plastic washer was really an important part.
Last edited by Redbullet; 10-17-22 at 03:11 PM.
05-07-22, 04:46 PM
#52
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Yep—you are right—what you are calling the ‘top of the headset’ is really a just a top spacer and, yes, that should push down on the collar. Its really not that complicated, I’m just not good at explaining it😥 but really do take it to a bike shop and have them show you how to do it—its easy once you see it done right! (They shouldn’t even charge you, but if they do, its worth the $20 to see it done right.)
05-08-22, 02:08 PM
#53
Senior Member
Thread Starter
Thanks very much for the explanations, I really understood all and help a lot.
I decided not to replace the fork. Not only that it is expensive, but I think the old one is not yet critically affected. Besides, I would have further issues (and costs) with properly painting a new fork: no too much expertise on carbon bikes in my country. I'll do some preservation works with epoxy on the steerer at the contact with the stem, then I shall add a thin layer of carbon fiber at the contact with the collar, just to restore the 28.6mm diameter (I assume that now, with 0.2-0.3mm decrease in steerer diameter, the collar can not be really tightened on it). And finally, I'll move from 28.6mm stem to 31.8mm and shim adapter. That should prevent further digging in the steerer. I hope the above will solve the issues...
All the best.
I decided not to replace the fork. Not only that it is expensive, but I think the old one is not yet critically affected. Besides, I would have further issues (and costs) with properly painting a new fork: no too much expertise on carbon bikes in my country. I'll do some preservation works with epoxy on the steerer at the contact with the stem, then I shall add a thin layer of carbon fiber at the contact with the collar, just to restore the 28.6mm diameter (I assume that now, with 0.2-0.3mm decrease in steerer diameter, the collar can not be really tightened on it). And finally, I'll move from 28.6mm stem to 31.8mm and shim adapter. That should prevent further digging in the steerer. I hope the above will solve the issues...
All the best.
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