Two complete Byers 7.5" Starmaster drive systems. These are 360 tooth gears with clutches, worms, and Hurst stepper motors. Motors and worms are on spring loaded housing. One drive was advertised as "Research quality" - worm and drive gear are matched for lower PE. Clutches are bored for 1.5" shafts. One drive has a removable sleeve for step down to 1". Motors are geared to give .625" step sizes on the sky when half stepped.
$750 + shipping for the pair. Prefer to sell as a pair only.