Lego Technic ADT 7 - Worm & Spring

A compilation of some more automatic gearboxes and stepper mechanism featuring opposing worm and spring design. Ratchet mechanisms are used to prevent backdrive when the secondary path disengages. Please turn on subtitles for some commentary.
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0:00 Worm & Spring
1:11 Intro
1:44 Model 1
3:09 Model 2
4:50 Model 3
7:00 Display & Stats
8:10 Stepper 2.0
10:00 Stepper 2.1
11:45 Subscribe!
Music in this video: 备兴天下beat

[@grantmichaels5138]

Every day, we inch closer to the coming existence of a Lego CVT that can actually function in RC Lego vehicles.

[@Very_Grumpy_Cat]

You are making some amazing things

[@NottoScales]

I remade the stepper mechanism as well as some automatic gearboxes from ADT5 together since they all make use of a spring. The spring isn't an official Lego part; I found it on the ground at a construction site.
I'm also experimenting with a new style in this video. Please turn on subtitles for some commentary.

[@soconoha8495]

Home depot has a hobby spring kit. A little package with 40-50 springs, about half are perfect for lego use.

[@in1]

Wow, great ideas and great editing!

[@Tydwhitey]

Wonderful ideas. Bravo!

[@austindavis1686]

Really cool stuff man

[@Hydras5527]

Nice
Really cool

[@timehunter9467]

I think I tried something like this with a differential and a steering rack instead of a spring. It was bulky but I wanted all official parts.

[@Ajokeiguess]

With websites like bricklink you can buy just the spring from the suspension, I know this because I also like to use authentic lego pieces.

[@piterpunx]

this is so cool dude! have you tried putting it on a vehicle? im so curious to see if it works reliably good!

[@NottoScales]

a past video (ADT 5) shows variants of model 2 and 3 in a concept car. When I’m done building automatic gearboxes, I plan to dedicate a video to testing them in rough terrain, under more realistic conditions.

[@Auzifriend_]

Where do you get the spring from?

[@NottoScales]

if I remember right, I found it on the ground a couple of years ago

[@Bernard_Tapie]

Lego suspensions springs make it right

[@NottoScales]

The one used isn’t from a Lego suspension, but those should work fine

[@bountiful5732]

Put up new videos. :)

[@NottoScales]

Working on it. Thanks for reminding me though. It’s nice to remembered.