Originally Posted by
cyccommute
As my Pappy used to say: "Hogwarsh!" The tubing used for a threaded or threadless fork has the same diameter and "finish". You seem to be implying that threadless steer tubes are an inferior product which is not what I have observed in a couple of decades of bicycle wrenching.
Counterpoint: Surly, a company no one accuses of under-engineering, states clearly that their threadless steer tubes are thinner, and not up to threading. They say it would be unsafe.
And, they say the diameter is all wrong, too.
http://surlybikes.com/info_hole/faqs...ess_surly_fork
[h=2]Can I thread a threadless Surly fork?[/h]
No! Don't do it. Really, just don't; It's unsafe. The wall thickness of our forks' steer tubes is too thin to thread safely, and as well as the inside diameter won't be right for your quill stem.