Bike Safe

Showcase and Assembly Video

Introduction

Sometimes, it is handy to leave certain items in the vehicle, while one is doing some shopping or other business. The problem doing this with a bike is, that things could be stolen.

In my case, I was getting tired to take my expensive bike flashlight with me all the time. The Prusa Transportation contest inspired me to solve this problem and  - hopefully - create a valuable tool for other people to store their items while they are leaving the bike.

Important Criteria

Creating this print, I highly valued three criteria:

• Safety: The Bike Safe should only be accessible with the key or (unavoidable) very strong force
  • The mounting screws can only be accessed by the person who owns the key.
  • The parts are strong, especially when they are printed with 40-60% infill.
  • The hinge consists of a metal screw and does not break when it is frequently used.
  • If the hinge is discovered and removed from the outside, the box still cannot be opened.
  • Given a good print quality the inside is protected from the rain.
• Versatility: The Bike Safe should be easily possible to mount on different bikes.
  • The printed screw in combination with two possible sizes of the mounting piece should provide a large versatility
  • Even by taking my bike as a reference, this print should fit on many other bikes since it is mounted only on one tube
• Printability: The parts are all printed without supports
  • I do not like to print large supports. This causes time and material waste, and potentially print quality is sacrificed.
  • The stl files are provided in the intended printing orientation.

Making

Additional Parts

Please consult the assembly video. The additional parts you need are:

• Screws:
  • 1 × M5x50
  • 4 × M3x20
• Nuts:
  • 1 × M5
  • 4 × M3
• Universal Cylinder Lever Lock. For example:
  https://www.amazon.de/dp/B00WT8VOOC/ref=cm_sw_em_r_mt_dp_48MQ195X3WTVJ1P92ENK

Print Advice:

Layer height: 0.2 mm

Supports: Hell no!

Infill: 40-60%

Raft: no

Bridge: yes

And the most important thing:

Have fun!