Spacers on threaded steerer?
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Originally Posted by HillRider
In fact, what you describe was done as a way to allow Shimano headsets (all for threaded forks) to be used with a threadless steerer. Team mechanic machined out the threads from the top race and slipped it over a threadless steerer. This was done by teams whose equipment supplier was Shimano so they could use Shimano headsets.
I've thought about doing this mod myself, though it seems like it would be tricky to get it just right without a reaming tool that perfectly fits the steer tube diameter.
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Originally Posted by operator
It does. We just discussed that. That's why the threads need to extend at least that low.
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Originally Posted by ISeeDeadHuffies
One other thing to consider, if the threads extend too low. You should not install a stem whose clamp extends into the threads.
Or did you mean the stem should go PAST the threads? If so, I should be safe. The clamp is like 2-3" down and I put it in most of the way.
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Originally Posted by urbanknight
That makes no sense. You're talking about a quill stem, right? If so, the threads are at the top and any stem will extend into them. Furthermore, on a frame as small as mine, the stem actually goes all the way to the bottom of the fork if you put it in all the way. My stock one would bottom out with about 1/8" to go.
Or did you mean the stem should go PAST the threads? If so, I should be safe. The clamp is like 2-3" down and I put it in most of the way.
Or did you mean the stem should go PAST the threads? If so, I should be safe. The clamp is like 2-3" down and I put it in most of the way.
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Originally Posted by moxfyre
I think what ISeeDeadHuffies is referring to is if you put a threadless stem on a threaded fork, the clamp should not go over the threads. Sorry for the confusion I've created by bringing up the decidedly unorthodox idea of converting an extra-large threaded fork to threadless
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Originally Posted by moxfyre
Interesting! I assume that at some point Shimano gave up on insisting that teams use threaded Shimano headsets? Why doesn't Shimano just make a threadless version themselves, anyway?
I've thought about doing this mod myself, though it seems like it would be tricky to get it just right without a reaming tool that perfectly fits the steer tube diameter.
I've thought about doing this mod myself, though it seems like it would be tricky to get it just right without a reaming tool that perfectly fits the steer tube diameter.
As to doing it yourself, it would be very difficult to hand ream or free-hand file away the threads while maintaining adequate concentricity. It would require a lathe and good technique to do it properly.
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Originally Posted by ISeeDeadHuffies
What I was refering to is that the expander wedge on a quill stem needs to be below the threaded section of the fork.
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Originally Posted by HillRider
Apparently Shimano refused to license the original patents for threadless headsets so they never made any and pretty much have abandoned the headset market.
As to doing it yourself, it would be very difficult to hand ream or free-hand file away the threads while maintaining adequate concentricity. It would require a lathe and good technique to do it properly.
As to doing it yourself, it would be very difficult to hand ream or free-hand file away the threads while maintaining adequate concentricity. It would require a lathe and good technique to do it properly.
It's just funny because you can basically make a threadless headset by carefully removing the threads from the adjustable race (even though it's difficult to do right), and throwing out the locknut. Who had the original patent, DiaCompe? I wonder if Shimano will get back into headset once the patent expires (~5-10 years from now I would guess).
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Got the fork today, and I need about 2 or 3 more threads. So I'll find a shop that can do that, but my bigger concern is that the fork blades are about 1/2" shorter than the stock fork. The wheel still fits with plenty of clearance, but we'll see how well it clears the shoes or affects the steering.