Update - 4th prototype

Closing in on the deadline, we made a final effort to get a working prototype done.

At the suggestion of Wesley, we moved the clamp from the downtube to the seat-tube and ran a secondary pull cable from the servos to the normal gear shift cable. The cables were joined with a loop and clamp.

The result was a much smaller force on the servos, enough where they could reliably actuate the cable between 4 gears.

The front gear was also tested and we were able to shift reliably between both gears.

As the deadline closes, we will be machining the second set of clamps, finalizing the servo actuation mechanism, and fine-tuning the software.