Wednesday, 31 May 2023 07:11


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Protect cyclists hands!

The project Is focused on the shocks that cyclists suffer when they go downhill or simply go on a mountain route. In this case, cyclists suffer many blows to their hands, due to brambles or tree branches. This is why a low cost 3D printable protection has been designed. This protection has three different parts. All of them can be 3D printed, but in this case, only two of the pieces are printed, the third one is created with a reused material.

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Additional Info

  • What you will learn:
    • Engineering:
    • - Designing and assembling the parts of the protection in the bicycle
    • Math:
    • - Work with the different measurements taken, calculating the right curvature
    • - Measuring the prototype
    • - Providing new solutions por each cyclist (Not all hands are same sized).
    • Technology:
    • - 3D printing process.
  • Expected Time:

    From 10 to 20 hours

  • Materials & Recycled Materials:

    The amount of material will depend on the needs of the user, and the material tha can be reused.

    • - PLA for 3D printers (RECYCLED)
    • - A laptop, at least running: Ultimaker Cura, ONSHAPE.
    • - A plastic bicycle mudguard (REUSED)
    • - 2-4 screws (can also be 3D printed)
  • Guide:
    • 1. Decide on which bike the protection will be mounted and who will be the user.
    • 2. Take the most important measures: Handlebar diameter The gap between the user's hand and the curvature of the handlebar (to obtain the maximum possible width of the adapter) Distance at which the protection itself should be and the curvature of this protection (the circumference radius).
    • 3. Design the ring (already available in stl) that should go on the handlebar. Consider how this ring will be attached to the adapter of the protection.
    • 4. Design the piece that will join the handlebar and the protection itself (available in stl). The purpose of this piece is simply to distance the protection from the handlebars of the bicycle, so as not to cause any discomfort to the rider when gripping the handlebars. It will be important to take into account the connection between this piece and the protection itself.
    • 5. Prototype the two pieces designed in the 3D printer, for this it will be necessary to use Ultimaker Cura, Prusa slicer, or other software available for it.
    • 6. Once prototyped and assembled (provisionally), we will proceed to the measurement to calculate the necessary size and shape of the protection, and we will make some marks on the mudguard that will be reused to manufacture the protection.
    • 7. Cut the mudguard to the required size using a band saw.
    • 8. Fit the guard to the bike. To join this piece to the handlebar connection piece, you can use an appropriate glue or, failing that, make the necessary cuts in the mudguard to join the two pieces mechanically.
    • 9. Check, adjust and reassemble the protection until the user is comfortable.
  • Further Steps:

    Deciding on the best material for this protection involves knowing the properties of the materials. One part of the protection has been made with a plastic mudguard, but it could be designed and manufactured with many other materials. Whoever carries out this project can go further and investigate the properties of each material. They will be able to choose which material is most suitable for printing the piece. Flexibility, hardness and weight are some of the most interesting properties that can be analysed. This further step would allow the user to work on the fourth leg of a STEM project, SCIENCE.

  • Software used in the project:
  • Difficulty level: Easy
  • Developed By: Politeknika Txorierri - ES


Read 180 times Last modified on Wednesday, 31 May 2023 07:57

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