What sets contained brightly colored gears with wide spaced teeth?
From Mark Koesel: ! These gears were part of the original Technical Building Sets line that was never made available here in the US. All the gears have teeth counts which are multiples of 3. The red gears have 9 (3 x 3), the blue have 15 (3 x 5) and the yellow 21 (3 x 7). The sets contained translucent-ish white technic axles, and grey 2×4 blocks with holes throughout. Red bushings (similar to today s grey technic bushings) were also included. Some sets also had special cast-metal cross axle parts which were used to mount these gears to the 4.5v motors available at that time. The first line of these sets was released in 1970. The sets were 800, 801 and 802. In 1972, set 803 was added. This set included a new rubber tire that fit the red gear, and also a new universal joint. These sets were discontinued at the end of 1973. In 1974, a new batch of sets (810, 811, 812, 813) were introduced. New links were added which could be used for either chains or bulldozer treads. I value these parts
