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Converting Dura Ace htreaded headset(7 posts)

Converting Dura Ace htreaded headsetdave woof
Sep 11, 2003 10:14 AM
A while back I heard the posties mechanic converted a Dura Ace threaded headset to use it on a threadless fork. Is this easy to do - has anyone done it? I'd like to use a DA on my bike (to match the rest :). Just wondering if it's just a matter of grinding or lathe work or what?

I have a 1 inch steer tube.
No jokes please.


Easy enough,TJeanloz
Sep 11, 2003 10:36 AM
It takes a dremel tool with a grinding wheel and a steady hand. You just need to grind the threads out of the top race, just enough so that it will slide over the steerer tube. If you're using a carbon steerer (which pretty much everbody is) I'd make a special effort to grind it smooth inside.
The Posties were doing it to an XT headset.....MR_GRUMPY
Sep 11, 2003 10:58 AM
because they need a 1 1/8 headset. The DuraAce headset will only work on 1" headsets.
The Posties were doing it to an XT headset.....dave woof
Sep 11, 2003 11:48 AM
thanks. Another reason for me to finally buy a dremel tool.. :D

I love my DuraAce headsetMR_GRUMPY
Sep 11, 2003 12:19 PM
Just as good as a King, and you can replace the cart. bearings in 5 minutes. (I haven't yet after 3 years)
I love my DuraAce headsetrussw19
Sep 12, 2003 11:49 AM
I have one that is 5+ years old now with about 40,000 miles on it. I decided that when the headset finally dies I will upgrade that bike to a threadless steerer, stem, and a King, but until then it will stay as is. For all I know, it may go the rest of that bike's life as a threaded steerer bike with a Dura-Ace headset.

I used a latheAtombomber
Sep 11, 2003 5:21 PM
I machined my XT headsets so that the angular compression ring could be used. That way if there is any variance in the steerer tube, it will be compensated for. All four of my bikes (2 Trek 5200s, and both mountainbikes) have the threadless XT headsets. The headtube of my freeride dually split before the headset has shown any sign of wear.