Technica - Lego Gear Wheels
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Lego Gear Wheels

The Lego Gear Wheels were highly modified round Lego plates with holes between the studs, a cross axle hole in the center and large teeth around the edge. The gears had an insert attached to the back (shown on the blue gear) which held in place a small annular spring. These gear wheels were used in a number of sets in the 1970s, such as the European 800 and 810 series as well as several Hobby Sets. They were part of a pre-technic system which included gears, cross axles and connectors.


   
Gear wheel, 9t
x451 Technic Gear 9 Tooth  PR

1970-1977


   
Gear wheel, 15t
x1021 Technic Gear 15 Tooth Axle Center  PR

1970-1976


   
Gear wheel, 21t, 70
x1022 Technic Gear 21 Tooth Axle Center  PR

1970-1976

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