The RANGER: Prosthetic Leg

About: I am a dancer with the International Ballet Academy. I have been dancing for 11 years now and am about to go on 12. In my free time, I design and build prosthetic appendages.

Prosthetics are used everyday in almost every single way. Because of this most of the prosthetics seen today are very cheap and made very poorly. On top of this, almost all of these prosthetics are extremely expensive. The RANGER is a prosthetic that is very well made and durable. Yes it may be expensive to make but in the end, it is very worth while. But why is it worth while? this prosthetic is made from airplane grade aluminum which eliminates the fear of the prosthetic breaking under pressure. Also, this prosthetic has the ability to come apart so that storage of it becomes 10 times easier. for example, lets say you wanted to ware a different prosthetic for awhile, you would have the ability to package the RANGER back up in a small condensed manner.

Many people have asked me why did I make the RANGER? To answer this question I need to start explaining what I do as a second hobby. I am dancer with the International Ballet Academy and I have been dancing for about 11 years now. But just this year I was thinking of prosthetics and how I could make them better and potentially useful to dancers. When a dancer goes to do a big jump for example, they put a lot of their body wait onto their legs in order to spring back up. For this reason, I needed a material that could withstand a ton of pressure. That is why I applied airplane grade aluminum to the RANGER. Also the spring function and the articulation of the foot are useful aspects for dancers.

The last and finial question that many of you are probably asking is why am I sharing this with you? The answer is that I want everyone to see that a prosthetic can do more than just walk or run if the creators would just put a little more effort into how they make there prosthetics. For example, airplane grade aluminum is used on airplanes every day and is an obvious resource that is very durable. Despite this fact, manufactures use carbon fiber because it is cheap and inexpensive. Unfortunately carbon fiber prosthetic feet are the cause of many injuries from prosthetics today. This is a life lesson as well. If you spend more time on something you will come out with a better result. Paul J. Meyer said that "productivity is never an accident. It is always the result of commitment to excellence, intelligent planning, and focussed effort." With that said I hope you enjoy building this prosthetic leg and enjoy the video that I have attached.

Supplies:

allen wrenches

https://www.pitsco.com/TETRIX-FTC-Competition-Set/...

spray paint: any color will work

springs: your preference on the amount of spring

https://www.amazon.com/Capri-Tools-10515-Ultimate-...

sheet metal: preferably aluminum

The socket is built based on your preference

https://www.pitsco.com/Shop/TETRIX-Robotics/TETRIX... :you can use these parts

Teacher Notes

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Step 1: The Foot: Step 1

Construct the main foot spring support.

Step 2: The Foot: Step 2

Attach the 12 holed curved flat bracket to the foot spring that was just built. Also add the L shaped flat bracket to the top of the foot.

Step 3: The Foot: Step 3

Attach the logo piece to the front of the foot.

Step 4: The Foot: Step 4

Attach the second L shaped flat bracket to the very front of the foot.

Step 5: The Foot: Step 5

Add the axel hub to the very top of the foot.

Step 6: The Shin Piece: Step 1

Begin by attaching the spring to the hinge.

Step 7: The Shin Piece: Step 2

Attach the tube to the hinge.

Step 8: The Shin Piece: Step 3

Attach the bent flat bracket to the hinge.

Step 9: The Shin Piece: Step 4

Add the J shaped flat bracket to the bent flat bracket in the previous step.

Step 10: The Shin Piece: Step 5

Attach the axel to the spring.

Step 11: The Shin Piece: Step 6

Attach the free end of the axel in step 5 to the J shaped flat bracket.

Step 12: The Shin Piece: Step 7

Attach the nob to the tip of the axel in step 6.

Step 13: The Shin Piece: Step 8

Add the little axel with the axel hub to the top of the shin piece.

Step 14: The N500: Step 1

Attach the square C channel to the hinge.

Step 15: The N500: Step 2

Attach the axil with the C channel to the hinge.

Step 16: The N500: Step 3

Add the F shaped channel, the W shaped flat bracket, and the spring to the hinge.

Step 17: The N500: Step 4

Attach the free end of the spring to the free end of the axel.

Step 18: The N500: Step 5

Attach the warning sign and sides.

Step 19: The N500: Step 6

Add the front cover and the last axel hub to the very top of the knee.

And there you have it, The RANGER. I hope you enjoyed building it. If you have any questions, please leave a comment below. If you could also please leave a comment stating what you thought of the RANGER or how I can improve it in the future.

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    3 Discussions

    None
    audreyobscura

    24 days ago

    Thanks for sharing your process! I am so curious to learn more about dancers who use prosthetics!

    None
    jmook1

    4 weeks ago

    Hey everyone, By the end of this weekend I will have the steps to make this project as well as the materials used. Until then, enjoy the pictures and video!

    None
    jmook1

    4 weeks ago

    Thank you so much, I will definitely work toward make my instructable better and will take your advice so that i will be able to have it featured on the site. I just had one question though and that was that when i was make my instructable it said that the multiple written steps were optional and were not required in order to have your instructable published? is this correct? again thanks for the support!