Originally Posted by
dweenk
I will not be using a quill stem. I intend to use the threadless clamp-on stem that came with the bike. The ONLY difference is that the steerer tube has threads at the top. I repeat - "The ONLY difference is that the steerer tube has threads at the top". There will be a star nut inside the steerer to hold things together.
The threadless stem has a high likelihood of snapping the steerer off at the threads where it clamps.
Don't do it. Really dangerous.