Can anyone tell me how to use gear wheels to modify the speed of the motor in the Power Functions set 8293?

I know I could use the remote control unit, but I need to have a fixed slow speed on a static unit which will power a non-LEGO moving toy. I need a slow turning axle.

1 Answer 1


Sariel's tutorial is one of the better ones, and his whole web site is worth while. The Eurobricks Technic forum also has a list of tutorials thread that you might find helpful.

Sariel starts very simple and ends up with a discussion of what makes different variants on some of the Lego gears effective...

sample image from Sariel

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.