Lego Technic 2 Speed Transmission

Introduction: Lego Technic 2 Speed Transmission

About: I love Legos, Lego Technics in particular, I enjoy being with my friends, I like playing piano. One of my favorite places is outdoors.

This is a very simple 2 speed transmission that I think anyone with a little bit of experience with Legos can build from a picture.

I get this idea from Sariel's* 4 speed transmission. I wanted to buy all the parts necessary to build his, but decided against it because I thought I could build my own, simpler, smaller version.

1st gear has a 3:1 gear ratio, which means the driver gear (the 8 tooth) has to spin 3 times to make the follower gear (the 24 tooth) spin once.
2nd gear has a 1:3 gear ratio, which means the driver gear (the 24 tooth) has to spin 1 times to make the follower gear (the 8 tooth) spin 3 times.


*
Sariel's Youtube : http://www.youtube.com/user/searme/

His Website: http://sariel.pl/

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    4 Discussions

    0
    HenryN1
    HenryN1

    5 years ago on Introduction

    how do you get the third axle to the righ to move up and down so it actually shifts?

    0
    lewster
    lewster

    8 years ago on Introduction

    Looks great! I have been trying to make something like this, only to give up in frustration. This is really helpful, but could you put arrows on the diagrams to show the input and output of power? Thanks, Lewster

    0
    plywood24
    plywood24

    Reply 8 years ago on Introduction

    Seeing as how I have literally forgotten how to use instructables, I will just tell you.
    The input is the axle that has the large black double bevel gear, the axle farthest to the left. The axle farthest to the right, with the dark grey 8 and 24 teeth gears is your output. I am not positive if you can reverse the input and output axles, it looks possible, however. Hope this helps.

    -Plywood24