⭐20% OFF!⭐ LEGO 4 Speed Automatic Gearbox

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LEGO 4 Speed Automatic Gearbox

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Features a Smooth Automatic Gear Shifting Mechanism (Geared Spring + New Type Differential), that works better than standard rubber band shifting mechanisms.

Designed for Lego Pneumatic Engines and Power Function Motors

Gears are Automatic Shifted based on the Amount of Torque or Load applied to the Output. 

Fast Shipping Worldwide

Lifetime Warranty on all Parts and Motors

Includes All Brand New Official LEGO Parts and Pro PDF Instructions

Features and Specifications:

• 4 Speed with Automatic Gear Shifting
• Smooth Auto Shifting Mechanism (Geared Spring + New Type Differential)
• Strong and Low Friction Design
• Perfect for All Lego Pneumatic Engine Kits or Power Function Motors
• Automatic Shift Sequence (4,3,2,1) (Starts from 4th gear when no load is applied)
• Orange Gear Shift Indicator
• Dimensions: L 120mm (4.7in) x W 64mm (2.5in), H 56mm (2.2in)
• Studs: 15 x 8 x 7
• Pro PDF Instructions
  

Gear Ratios:

• 1st Gear 1.67:1
• 2nd Gear 1.33:1
• 3rd Gear 1:1
• 4th Gear 1:1.25

How it works, Automatic Gear Shifting Examples: 

Lego Car with the Gearbox is going up Steep Hill, the Gearbox will automatically change down to 1st Gear for more Torque (So it can make it up the Steep Hill).

When the same Car is going on smooth flat surface, Gearbox will automatically change back up to 4th Gear for more Speed.

2nd and 3rd Gear will be automatically selected for small hills or accelerating, when extra Torque is required.

The Automatic Shift Sequence is (4,3,2,1), Starts from 4th gear when no load is applied.

Note: The 6.5L Lego Shock Absorber used for the Spring, can be changed from a Grey Soft Spring to a Red Hard Spring. If you plan to use this Gearbox in Heavy Vehicles (3-5kg plus).

You can buy the 6.5L Hard Spring Shock Absorbers here: https://www.greengeckoworkshop.com/products/lego-technic-shock-absorber-hard-spring-pack

Feel free to contact me with any questions here: contact@greengeckoworkshop.com

Tracked International Air Mail

USA 3-7 Days

Canada 3-7 Days

EU and other countries 5-8 Days 

Australia (2-6 Days) and New Zealand (1-2 Days)

Tracking Number is sent to your Email, once shipped

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