Ravin R500E Sniper Electric Drive System
This electric drive system was designed to accompany Ravin’s R500E Sniper. With an easy push of a button, the user can automatically cock or decock their bow. The system is easily detachable from the stock for storage and includes a rechargeable battery.
Design Research
Starting with a feasibility study, we evaluated torque requirements, calculated weight and cost estimates, and created possible block diagrams of major components.
We also created a mood board to establish a general aesthetic direction for the product.
By 3D printing a portion of the crossbow, we were able to evaluate the possibility of moving the handle loop forward to account for the travel needed to disengage the electric drive system accessory from the crossbow (0.5-1” of travel).
Industrial Design
Our first concepts explored different component configurations, user interactions for installing the device and removing the battery pack, and styling options.
Renderings were created to communicate the final design direction and graphic applications, developed through multiple reviews with Ravin.
Mechanical Engineering
Internal components were sourced and concept CAD was developed to be used for prototyping and eventually production.
Electrical & Software Engineering
For this project, custom PCBs were designed. Through electrical schematics and firmware development, a functional prototype was created and went through rounds of testing before being finalized.
Prototyping
An initial proof of concept prototype was created with 3D printed parts and internal components.
A higher fidelity prototype was created next for a more realistic evaluation of the overall design.
