Headset: Theaded to Threadless

Sikora

A friend of mine is stripping his old GT Agressor frame and fitting new components.

Problem we have is that the old headset was threaded with a quill stem.

Can the headset just be replaced with a threadless one so it can work with a modern fork and stem?

nicklouse

depends on what the size is.

Sikora

1 1/2" inside the headtube (Dunno exactly how accurate that is, my friend measured it)

http://i49.photobucket.com/albums/f271/ ... CF1241.jpg

The steerer tube in the photo is 1 1/8"

nicklouse

sorry what is that picture?

i looks like what ever it is something is wrong.

if the old fork was 1" or 1 1/8" you can use a threadless headset with a fork that has the same size steerer.


If the old fork is 1 1/4" then get some reducers to 1 1/8" But the steerer needs to be long enough.

Sikora

Forks haven't been pushed all the way through in the photo, so you could see the size difference.

Sikora

This is one of the old cups, held over the steerer tube on the new 1 1/8" forks we want to fit.

http://i49.photobucket.com/albums/f271/ ... CF1245.jpg

We no longer have the old forks to check what size steerer it had

nicklouse

means nothing. read the speaks on park tools and get the vernier out and measure things.