Twinsies - well, maybe not quite, mine has a captured nut/washer that fits over the axle and pushes or pulls it along the fork end when the knurled nut is turned.
That’s pretty clever. Paul Comp made similar track ends for a while, Bob Jackson made frames with them.
@Eeyorecore started
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Twinsies - well, maybe not quite, mine has a captured nut/washer that fits over the axle and pushes or pulls it along the fork end when the knurled nut is turned.