LEGO 4 Speed Linear Gearbox, 2 Outputs

Описание: A design for a four speed gearbox, with two output axles - one for drive, and the other for PTO (power take-off) to power a winch or other mechanism.

When the drive motor is spinning the gear change is very smooth, and can be controlled by a single LEGO motor. There is only a small position between each gear when the gearbox is in neutral.

PTO gear (far right) = 2.083 : 1
1st gear (centre right) = 1.667 : 1
2nd gear (centre left) = 1.000 : 1
3rd gear (far left) = 0.600 : 1

Extra gears could be added to get a five speed gearbox (or more), with the only limitation being the length of the axle supporting the worm gears and the two axles on the sides that allow the gear selector to slide back and forwards.

One problem with the current design is that there is a little bit too much play in the sliding mechanism, and this causes the gears to jump and grind when the outputs are under load.

More information can be found in this forum post:
https://www.eurobricks.com/forum/inde...

--------

This model is not an official LEGO set.
This model is not for sale.
I do not have building instructions for this model.

--------

LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize or endorse this video.