Nerf Rival Zeus N20 Pusher Motor Cage

thingiverse

This is a motor cage and wheel for an N20 geared motor to use as a pusher in the Nerf Rival Zeus blaster. This mod completely replaces the stock pusher mechanism, making the Zeus a full-auto blaster. **WARNING:** Installing this mod irreversibly changes the internals of the blaster! You are doing this at your own risk! **Also:** this is not exactly a beginner build as you need to modify/cut/file/change lots of parts of the blaster and the shell. In addition to the printed parts you will need: * a Nerf Rival Zeus blaster (obviously) * an N20 geared motor (600-1000 RPM recommended) * four to six M1x5 self tapping screws * high-amp micro-switch for rev-trigger / flywheels * smaller roller-style micro-switch for trigger Tools and supplies: * several lengths and gauges of wire (colored if possible) * soldering tools & heatshrink * a dremel with cutting and grinding bits * flush-cutters & files * hot-glue and gun * epoxy-putty (milliput, plumbers-epoxy, etc.) **Installation:** Remove all the parts from the mechanical pusher-assembly. Keep the trigger and spring (if you want you can use a stronger spring to prevent accidental activation). Dremel out the "bridge"-part where the lever-arm lifting the dart-gate used to sit. Use files and flush-cutter to remove any bumps left. File/cut away enough of the walls so the printed parts fit so the motor-shaft sits straight above the hole. Also dremel out the orange top-cover so the wheel can turn even with the cover in place. *Do not yet install the motor and cage.* The pusher-wheel is simply press-fit onto the shaft of the **N20 motor**. One side of the wheel is keyed to fit onto the d-shaft of the axle. If (like me) you get a motor with only a partially keyed axle, the other side of the wheel is open for that reason. The motor is held in its cage by the gearbox and secured with **four M1x5** self-tapping screws. These can be found in most laptop repair screw kits. The motor cage is held in place either by screwing it the plastic where the old pusher-mechanism used to be (using the two additional **M1x5**), by using lots of glue and clamping it with the original (orange) lid of the pusher or a combination of both. It might be convenient to mark and pre-drill the holes for the mounting screws. The wiring is similar to the wiring of a Perses or a Chaos: You'll need to mount a roller-style micro-switch behind the trigger to activate the motor unless you want to wire fire and rev to the same switch (*not recommended*). Before you connect the N20 motor **make sure the pusher-wheel turns in the right direction** (into the flywheels). If not you need to reverse the polarity of the motor-terminals. To mount the new switch(es) it is quite possible that you might need to clear more space on the inside of the blaster. As this was an on-and-off-project of me i've kind of lost track of all that i did to the blaster...