LEGO's reinforced spur gear at module 1: flat-topped teeth on a 6 mm hub one stud long, the pitch circle N/2 across, tips 0.97 past it, each tooth 1.2 thick to 0.16 past the pitch circle and narrowing to a 0.56 tip, 3.8 mm across the face, with a rib under every tooth running the hub's length. 8 teeth is 10928, 9.94 mm across; with the sliding hole, two quarters of the cross opened round, 11955. Web builds LEGO's other spur gears on an axle cross: disc is 69778, 12 involute teeth on a disc round a Ø7.2 hub; spokes is 94925, 16 teeth on a rim held by four spokes, the cross slotted to r 4; rim is 69779, 20 involute teeth on a stepped rim and four spokes. Two at half their teeth added in millimetres apart mesh tooth in gap: 8 + 8 at 8 mm, 8 + 24 at 16 on beam holes.

Made by

ReDo.Pro

Kind

Parametric part

Licence

CC BY-SA 4.0

Keywords

LEGO, Technic, gear, spur gear, 8 tooth, reinforced, axle, 12 tooth, 16 tooth, 20 tooth, involute