1" steerer extender

[adam6177]

Hi all

Photos of offering item here:

https://photos.app.goo.gl/eGZpKyjEHdSLSA7d7

I bought a Klein pinnacle frame a few years back and am just building it up now. It didn't come with a stem but came with what appeared at first to be a steerer extender.

What's weird is that there is only about 1" of a drop before you get to a "shoulder" but it does not have a thread. When I look down the steerer I can see all the way throuh to the tyre.

For the life of me I can't work out how to remove the damn thing. Is there any chance it's bonded onto the fork steerer? What really confuses me is that there is no good at to remove the headset unless this thing cab be removed.

Any help appreciated, it's doing my nut.

 

[CassidyAce]

Re:

That looks like a quill to ahead stem adaptor but with the bolt missing. If you can see through, all the way to the tyre, the wedge nut might be missing too. If you turn the bike upside down, and look through the steerer, can you see the underside of the wedge nut or can you just see the adaptor? One possibility is that the wedge nut is there and wedging the stem adaptor in place but, because the bolt is missing, you are unable to free the wedge and hence the adaptor. If that's the case, you need to somehow knock the wedge nut down to free the adaptor: long, thin, hard tool and hammer required - or attempt to get another bolt into the thread of the wedge nut, then hit with a hammer.

However, looking at the photos, it looks like you can move the adaptor up and down a bit, just not all the way out. When you do move the adaptor up and down is the whole fork moving up and down too? Looking at the photos, I suspect that it isn't, in which case the adaptor is not bonded to the steerer: it can move independently and it should pull out. If it moves but won't pull out completely, it might be a little deformed: try undoing the locknut a little and see if that allows it to move further out. If that helps, continue.