NAU Bike Suspension Team

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Device Purpose and Latest Parts    

Alongside the mathematical model, the team wanted to create a device that would be able to adjust all suspension settings while moving on the trail. After going through an expedited design process, the design team decided to go for a purely mechanical design using shifter cables as opposed to an electrical design using and Arduino and stepper motors. After some quick 3D modeling, the team came up with some pieces that could mount to the bike and aid in switching the different bike settings from the cockpit of the bike. The final design includes a switcher that the rider can use to adjust through the different suspension settings. The switcher uses cables under tension to pull the rebound and compression knobs to the correct settings.      

CAD Model:

The image below shows the team’s device along with a simple model of the rear bike shock. The shock model has three pieces attached to it. Those pieces are the two caps for the adjustment knobs and an anchor point for the cables which allows the cables to stay in tension. The other part of the device is the switcher mechanism as seen on the right. The user can use the slider lever to go up and down between the five suggested settings.    

Image: Exploded View

3D Printed Design and Construction:

The team worked with the 3D MakerLab in Cline Library in order to quickly get parts for the final design. Along with the 3D printed parts, the team used some basic off the shelf pieces to complete the design. The image below shows the switcher mechanism mounted on the bike. To see the device in action, refer to the video in the “Home” tab of this website.    

Image:Final Switcher Device