What it was
This version was for builders who preferred a Happ trackball, already owned a trackball, or simply wanted the finished Ultra-Trackball enclosure without the arcade parts.
The shell was CNC-cut from black melamine-covered MDF and drilled for either the Betson/Imperial or Happ trackball. Customers could originally add buttons and a mounting plate as options.
Original selling price: $45.95. Optional buttons were $2.25 each and the trackball plate was a $16 option. Those figures are preserved only as historical information.
Original features
- 5/8-inch black melamine-covered MDF
- Predrilled trackball opening and plate mounting holes
- Compatible with Betson/Imperial and Happ trackballs
- Three predrilled button holes
- Rear cable-routing slot
- Removable hardboard bottom secured with four screws
- T-molding installed on the top and both sides
- 3-1/2 to 4-3/8 inches high × 16 inches wide × 10-1/2 inches deep
- Original shipping charge: $12 insured to the lower 48 states
Additional pictures
Build your own: The original Ultra-Trackball plans are still available free.