Pinless Flywheel and Rubber band attachement for LEGO Mindstorms robots

Kiril Mitov's most favourite attachment. To quote him "I had a really great fun building this attachment and recording the videos for it".

It's an attachment with a Rubber band and a Flywheel and a Gear Wheel and a Worm Gear. So much knowledge in just one small attachment. The goal of the attachment is to be able to have an active attachment without actually having a motor. So you can place that attachment and it will do the work for you instead of using a motor to power it. 

Build with LEGO Mindstorms EV3 set. 

When placing the rubber bands check out the tutorials

Placing the white rubber band is shown at https://www.fllcasts.com/tutorials/105-rubber-band-attachment-with-a-flywheel-solving-fll-2014-search-engine-part-2 at around 05:40.

Placing the red rubber band is shown at https://www.fllcasts.com/tutorials/104-rubber-band-attachment-with-a-flywheel-solving-fll-2014-search-engine-part-1 

This material requires a subscription to one of the following plans:

  • FLLCasts Personal B One Year
  • FLLCasts Team Six months
  • FLLCasts School

In order to build the full construction, you'll have to subscribe to FLLCasts.

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  • #41
  • 13 Sep 2015

To construct this you will need

  • LEGO Mindstorms EV3 45544 Education Core
  • LEGO Mindstorms EV3 45560 Education Resource

Bill of materials (Parts list)

Rubber band attachment with a flywheel - solving FLL 2014 Search Engine (part 2)

In this tutorial of the series we would get into more details on how the flywheel works, what's its purpose and how the whole attachment is triggered with the first rubber band.

 

Rubber band attachment with a flywheel - solving FLL 2014 Search Engine (part 3). Two tasks at once

The third part of the series the goal is to extend the robot attachment so that we could solve the second part of the FIRST LEGO League World Class mission challenge - to take the loop.

Rubber band attachment with a flywheel - solving FLL 2014 Search Engine (part 4). Two tasks at once

The attachment is now so advanced that we can do two tasks at once with it in order to solve the FIRST LEGO League 2014 World Class Search Engine Mission.

Rubber band attachment with a flywheel - solving FLL 2014 Search Engine (part 1)

Let's try to integrate more of the things we have learned into a single attachment. One that could accumulate energy, conserve it and use it at the appropriate time. All this because of a Rubber Band and a Flywheel - and if you don't know what a flywheel is you should definitely watch this videos 

Courses and lessons with this Material

This Material is used in the following courses and lessons

Image for FIRST LEGO League Competition. Attachments
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  • 347:26
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Image for Attachments with Rubber Bands
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  • 3d_rotation 9
Image for FIRST LEGO League Competition. Attachments
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  • 60
  • 347:26
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Image for FIRST LEGO League 2014 World Class. Example solutions
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  • 16
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  • 3d_rotation 7