This video shows how to make a Lego Technic 4 Speed gearbox using 100 parts. The gearbox is a manual gearbox makes gearing ratios of 1/3, 5/9, 1/1 and 5/3.

The gearbox is demonstrated by hand and by using a Lego Technic Large Power functions motor.

This lego technic multi function gearbox implements two separate functions using just a single motor. It implements the two functions by exploiting the direction of rotation of the motor and implementing one function for the forward direction and a function selector in the reverse direction. The ...read more

This gearbox solves the problem of needing three lego technic motors to remotely control a car with 3 functions namely driving, steering and gear changing capability. The lego gearbox implements two functions at once by exploiting the direction of rotation of the driving motor and ...read more

This video shows the design and construction of an 8 speed manual gearbox inspired by the Lego Technic Ferrari 488 GTE model that has come out in 2021. The lego technic set is called set #42125 Ferrari 488 GTE "AF Corse #51".

The gearbox gearing ratios closely approximate the ge...read more

An improved version of a lego technic RC 3 speed gearbox is implemented into a remote control lego car. This video shows three main improvements over the previous gearbox design. The first is an improvement is to replace the 90 degree bugatti stepper  with a PF servo motor reducing the gearb...read more

A lego technic 2 speed automatic gearbox is presented. The point of difference of this automatic 2 speed gearbox is a secondary booster motor is activated once the torque detector senses a large enough torque on the output of the automatic gearbox.

The second motor is turned on by a pole ...read more

Here I present a lego technic 8 speed gearbox that does the seemingly impossible - creating eight speeds using just two levers. Normally two levers are used to create a lego 4 speed lego gearbox - however this design allows for 1 of 8 different speeds to be selected.

Each lever drives a s...read more

A 1,023 speed gearbox has been built into a Lego Technic remote controlled car chassis. The car can be steered and driven via remote control using two channels. The gears can be manually changed using ten selectors that drive ten differentials. This allows for one of 1023 different speeds to be s...read more

Watch the details and explanations of my latest Lego Technic creations. Learn about Lego technic techniques, components and more.

This strong and versatile four speed sequential lego gearbox uses the new "Change over rotary catch" (from the bugatti chiron, 42083) component to smoothly select from 1 of four speeds using a single lever. The gearbox implements 1st, 2nd, 3rd and reverse speeds. The rotary catch is kep...read more