Learn how the DIFFERENTIAL works:

The Differential is a stylized educational model, an interactive study guide to the mechanism, only for learning its essentials and principles of working. The Differential was designed to ensure that the drive wheels sitting on the same axle rotate at a different rate and cover different distances at the same time.  This mechanism allows the car to make turns without the wheels skidding, prevents wheel-slip, reduces tire wear, and makes entering and going out of turns easier for the driver. Having assembled the Differential, you can unblock it by pushing the lever in position 1 (Up) and setting both wheels in motion by rotation of the drive gear or the wheel. The Control lever regulates the smooth locking of the left and right wheels independently by turning left or right respectively. In the “down” position of the lever, both wheels are linked in a rigid coupling and can either rotate together (propelled by the drive gear or a wheel) or lock simultaneously (by the lever of the wheel).

When and who invented it:

The car differential was invented by French engineer Onesiphore Pecqueur in 1825. In the 1930s of the 20th century, German automotive engineer Ferdinand Porsche made significant improvements to the device.

The mechanism of the Differential is composed of:

• The drive gear
• The locking lever
• The side gear
• The locking clutch
• The wheel

Dimensions
Model size: 6.9 x 5.3 x 4.1 in. 
Package size: 8.1 x 7.4 x 2.5 in.

Weight
1.06 lbs 

Number of Parts
163

Assembly Time
2 hours

Level
Easy

Shipping
We ship most in-stock merchandise within 24 hours of receiving your order. Standard ground delivery usually arrives in 5-7 business days.

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If, for any reason, you are not 100% satisfied with one of our products, you may return it for a refund within 30 days of the purchase date. Please note, some items have additional return restrictions. For complete information on our returns policy and procedure, visit our Easy 30-Day Return Policy Page for full details.