After numerous redesigns and part replacements, the Freigewehr-V2.5 represents my contribution to the Humans vs Zombies (HvZ) and Nerf community.
UPDATE (12 NOV 2017)
This project has been temporarily benched due to the limitations of the selected components. Using only 2 relays and a couple switches, achieving anything other than a full-auto dart-machine is quite difficult. More controlled fire and a more adaptable system is being explored in this project's successor (V3).
UPDATE (5 MAY, 2017)
Front end cage, slightly revised to more easily allow insertion of optional 9/16" brass, and wiring.
FrontEnd 2.5.5 VERIFIED WORKING
Flywheel shaft-hole slightly widened for easier fitting on 360-sized motors.
UPDATE: (3 May, 2017)
After an attempted build last week, I will be posting slightly revised front and back ends with a bill of materials.
Back End Revision: Added a corresponding hole for the wires to travel internally.
Front End Revision: Removed excess material, allowing for the wires to more easily enter the front through the midsection.
Additionally, this project has been once again marked as a "Work-in-progress" due to a mechanical glitch in the front end. Printing at the limit of my current capabilities, I am unable to print the wheels and motor gears in a way such that they don't occasionally jam. This jam cause my one of my motors to give off a healthy puff of smoke.
There are now 2 independent pairs of front ends and covers. I have been unable to get the indirect bearing and gear-drive working, due to print/design problems. Despite redesigning the gears repeatedly with increasing tolerances, the gears quickly find jamming points while spinning and cause issues. Unless redesigning the front-end, I would suggest sticking to the direct-drive configuration.