Is the metal link from the Speed King bass pedal the same part or at least compatible? Seems like it might make sense since the older 1121 hi-hat stand has the same footboard as the Speed King bass pedal. Since Ludwig still sells the Speed King bass pedal, the linkage (#P1210A) is available from Ludwig dealers for about five or six bucks.
It is similar, but unfortunately will not work as it is much longer than the hihat link. However, it may be possible to modify it to work by shortening and reshaping it......Hmmmm