pan y agua
Join Date: Aug 2005
Bikes: Wilier Zero 7; Merlin Extralight; Co-Motion Robusta; Schwinn Paramount; Motobecane Phantom Cross; Cervelo P2; Motebecane Ti Fly 29er; Calfee Dragonfly Tandem
Curious why you'd want to change the quill stem to threadless?
One major advantage of threadless is that can save a lot of weight, but the major reason it does so is that it allows you to run an all CF fork with a CF steerer.
If you go with a steel fork with a steel steerer, the weight savings will be negligible.
If the reason is stiffness, the more cost effective answer would be to get a beefier quill stem, even a steel track stem if front end stiffness is really a concern.
Otherwise you're going to replace fork, headset, stem, and likely handlebars at considerable cost, with neglible return in performance.
You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.