A scissor gear assembly 1 has a main gear 3 and auxiliary gear 5 concentric to the main gear and in axial direction near the main gear. Further the assembly has a planar annular spring 7 being interrupted at one place. At the interruption the spring has two ends 7A and 7B. The spring is present between both gears and is with one end 7A connected to the main gear 3 and with the other end 7B to the auxiliary gear 5, so that both gears are connected to each other in rotation direction via the spring.Each end 7A, 7B of the spring is provided with an extension 9 forming extra mass. These extensions are each provided with a slot 13. Because of these extra masses the spring torque will vary depending on the rotational speed of the gear assembly.