Protean Rev-Core. Swappable cartridges. Tunable rate-of-fire

If you’re having trouble unloading magazines fast enough, this mod is for you.  All the brilliance and modularity of the original protean with some fun tweaks. 

Rev-Core, A modular rate of fire mod.

This mod uses swappable motor cartridges, I call Rev-Cores, to control rate of fire. Switching between speeds from a reasonable 10 darts per second to an impractical 50 takes under 30 seconds. Pull three receiver cover pins, swap the  Rev-Core, and plug in the new one. No tools required. Each Core houses two high torque N20 motors which are synchronized by a gear mechanism that ensures both motors operate at matched RPMs.  --Differing Rpms function similar to a paper shredder ;-) 

A more reliable pusher wheel system.

Instead of a traditional single pusher wheel, this design uses three synchronized wheels to distribute contact and push each dart forward. This extra grip reduces jams and improves reliability; so much so that this system can also shoot older chewed up darts at high speeds.  See junk drawer dart video, (destroyed  darts shot at 45dps.)  

Customizable in all the best ways.

Moving the pusher system forward to the receiver cover means an almost empty cavity above the grip. I added the battery to that space and ditched the stock for a SMG feel, but there is plenty of room for an Arduino board/select fire options with many other battery and stock configurations.  

Pro Tip:  
This system, like many high rate of fire systems, works better with stronger magazine springs. The Talon‑10 performs consistently through a full mag. The Talon‑18 performs well until the final ~3 darts because the mag spring’s tension drops when it’s fully extended. You can print a spacer for the Talon 18 or add a longer spring. 

A Huge Thanks

• To my wonderful pregnant wife who is rightfully pissed for all the time and attention I have given this. 
• To FlyGonial for making the Protean and all its parts open source. This gave me the confidence I needed to start experimenting with my own ideas. 
• To Mat of the Official Eggonator Club for making the technical wiring diagram. Glad your electrical engineering degree paid off.
• To Dom's 3D Print Shop for the encouragement, feedback, and guidance on my mission of trying to hit higher rates of fire.

Printing. 

Gears and Drive wheels must be PETG everything else can be PLA or PETG. 
The Grip Frame needs at least 9 wall loops because of how it interacts with the receiver around the bottom pin hole. Otherwise I have been working with 4 to 9 wall loops for most parts with 30% gyroid infill. Obviously use more robust print settings if you're planning on competing.   

Foregrip is mine and can be found here.

Sight is the “Quick Point Sight” by TimETraveller8 and can be found here.

Parts List

This parts list assumes you have built the Protean (double stage, single stage, or Protean-K single stage) and supplies the additional components required for a secondary grip, pusher cover, and receiver cover. Note: when swapping from the original blaster you must change the stock mag release; I highly recommend permanently switching to the lower mag release anyway. (The included mag release is dropped by 1.25mm, but I've seen improvements in performance up to 2mm.)
I have added links to the list for reference only. Visit links to see specifics on specs; not only do prices and inventory fluctuate but support local/Out Of Darts if you can. (Also OOD if you're reading this, please send me merch.)

Rev-Core

Blaster Mod

Darts per second speed table. 

Fully charged s3 battery using DZ chili cut to 38mm

Help me fill this table,  send in your speeds and lets fill in the gaps.