Originally Posted by
FBinNY
There's a wedge attached to the bolt which you push down so the stem releases.
See image
It only needs to drop an 1/8" or so, so if the bolt is attached and you can freely lift and drop the bolt that much, you're done. Leave it attached so you don't have to go fishing for the wedge later.
Once the wedge is free, the stem adapter can still be snug in the steerer. Back when quill stems were SOP, you'd typically twist the bars left and right with the wheel trapped between your knees and work the stem up. So, clamp your bars back onto the adapter and do the same thing.
Originally Posted by
fietsbob
Originally Posted by
Slash5
You should try a better penetrating oil than WD40. Assuming you are talking about putting a long punch up through the bottom of the fork steerer, that should work. Although you will be hitting the wedge so won't get a direct hit on the stem.
You tried putting the stem and bars on and twisting?
Sacrificing the stem and putting a big pipe wrench on it might get it turning/moving.
Originally Posted by
fietsbob
That would be 0.2mm, if true *22.2-22.0= 0.2mm ... *7/8"
Thats steerer tube ID , First, You have to get it out, to measure that , Of Course..
So I've checked the model and the adapter size is 22.2.
What I don't know is if the diameter of the fork tube is 22.0 or 22.2... I'm guessing 22.0 mm, because it's a french bike, altough the headset is an italian Galli.
So, if the adapter is indeed 22.2 mm, my only choice is to take the frame to a bike shop so to drill the adapter out, right? There's no way it's going to come out by hammer.