Out of interest, what's the best way to remove one of these? I tried using a punch to leverage it free and I also tried a large allen bolt, bolted in to to a rotor truing tool. I think my steerer tube not being perfectly round also didn't help the situation.
In seriousness, loosen the main bolt, wack it with a hammer to “pop” the bottom conical washer out of the expander, then pull out the top conical washer.
Sometime just popping the lower conical washer is enough but worst case, both need removing.
Out of interest, what's the best way to remove one of these? I tried using a punch to leverage it free and I also tried a large allen bolt, bolted in to to a rotor truing tool. I think my steerer tube not being perfectly round also didn't help the situation.