UGEARS STEM LAB

5 x WOODEN MECHANICAL MODEL KITS


PENDULUM
Model Size: 4.5*3.3*6.6 in (11.5*8.3*16.7 cm)

Number of components: 92

Estimated time of assembly: 1-2 hour

The pendulum is one of the basic and most reliable time measuring mechanisms. Its working principle is based on the model's constant amplitude oscillation under the force of gravity (weight) and potential energy (tension force) of the rubber band. The rubber band powers the mechanism of the model and compensates for the pendulum's oscillations' kinetic energy loss. The device is animated by means of gear unit with a windup wheel. The model has an anchor escapement controlling the frequency of oscillations, a weight, a scape-wheel, gearing, rubber band, ratchet, and pawl reducing operation error. The model has several means to control the frequency of oscillations: the weight of the pendulum bob, the vertical position of the weight on the pendulum, and the tension of the rubber band


GEARBOX

Model Size: 5.1*3.9*4.3 in (13*10*11 cm)

Number of components: 120

Estimated time of assembly: 1-2 hour

A mechanical gearbox is a reducer that provides speed and torque conversions from a motor to the driving wheels. After assembly, you can experiment with the Ugears manual Gearbox, by turns, choose I, II, III, or reverse with a kinematic pair of gears with different ratios and, rotating the actuator handle clock-wise, you can watch and control the rotation speed of the layshaft and drive shaft.


TACHOMETER

Model size: 9.4*4.1*4.8 in (24*10.3*12.3 cm)

Number of components: 117

Estimated time of assembly: 2.5 hours

When the handle is rotated, movement is transmitted through a reducer, increasing the RPM and displacing twin weights in the centrifugal unit. The higher the RPM, the more centrifugal force separates the weights, shifting a movable axle with flywheel. A pointer mechanism (dial) is fixed to the axle; the more the axle shifts (higher RPM), the more the dial arrow deflects, indicating higher speed rotation.


COUNTER
Model Size: 5.3*2.6*4.8 in (13.5*6.5*12.2 cm)

Number of components: 157

Estimated time of assembly: 1-2 hour

The model has three cylinder gears with numbers from 0 to 9 and a Geneva Drive. This combination allows you to see an interesting mechanical feature: when the reciprocating motion of the click-button using the Geneva Drive mechanism turns into the rotary motion of the cylinder gears with numbers. The Counter provides two options of data registering: click-button on the roof of its body, and a turn handle on its side.


2-IN-1 ARITHMETIC KIT

Addiator size: 8.5*4.3*0.91 in (21.5*11*2.3 cm)
Multiplier size: 9.8*10*1.6 in (24.8*25.5*4 cm)

Number of components: 117

Estimated time of assembly: 2.5 hours


The Mechanical Addiator consists of a housing in which four rails or racks are set, with printed values on them. A stylus is used to input values. Numbers are entered from cam slots, and the results are displayed in four center windows.

The Mechanical Multiplier consists of two sliders which move along a number line (1-12), and a lever system which transfers the movement of the sliders to a “Results” window, which moves along a value field.


REQUIRES NO GLUE


ALL 5 BRAND NEW AND STILL SEALED