MS-GnK-200: Alternative powertrain for MS-GnK v1.2 using GnK-200 flywheels and motors

UPDATES:

27/08/2026

• Fixed TPU mounts not fitting to cage properly

• New cage plates with more material around holes

30/07/2026

• New flywheel cage! This now consists of one printed part, and 2 metal plates to mount the motor. Plate .step file included, can be cut via JLCCNC or sendcutsend.

• Edits on Upper front + Rear to make the flywheel housing slightly thicker, and allowing more clearance of the flywheels

• Alternate flywheels added for Axis C145 1404.5 motors and BetaFPV LAVA 1506 motors

01/06/2026

• Updated tolerances on Upper Front, Rear, and Top Rail, alongside more space for the ESC.

• Thicker Cage Mount Front, means barrel is less likely to wobble around and come loose

23/03/2026

• Top rail edited to work with V1.2 of MS-GnK

• Alu Flywheel cage edited to use bot 9mm and 12mm motor mounts

04/01/2026

• Roller added to Cage Mount Front, this ensures darts feed smoother into the flywheels without entering too early. This is mounted with a 1.5mm Dowel pin

• Fixed gap near the rear of the Upper Front assemblys

11/08/2025

• Barrel retention method changed to a bayonet type fit, which is much friendlier on printing tolerances compared to a thread

19/07/2025

• Added locating nubs to Upper Front and NMS Upper Front components, eliminating the need of filament pins to keep aligned 

• NMS top rail section moved above the magwell

06/07/2025:

• Published

This is MS-GnK-200, yet another MS-GnK varient that takes flywheels and motors from GnK-200!

This is fully interchangeable with stock MS-GnK parts, I use a connector on the ESC to easily swap out the flywheel cages. You will need to update settings on the firmware to match your motor choice.

FPS should be near exactly the same as GnK-200, though I have included some alternative flywheels that have 7mm circular crush profile, but with 32mm OD flywheels, meaning they should hit even harder!

If you want machined versions of GnK-200 flywheels, Will (Beefsquad) sells them here!

Upper front shroud for NMS-GnK has also been included in case you wanted to create an iNMS-GnK!

No further hardware is required apart from the bolts included in GnK-200 motors listed in its hardware list (I recommend Axis C145 1404 4500KV Motors). If you do not have hardware from a GnK-200, I would recommend using BetaFPV LAVA 1506 motors as they have a lot more torque compared to 1404 motors. 

This project is licensed under the terms of the Creative Commons Non-Commercial Attribution Share Alike 4.0 license, which means you can print it, remix it, share it, and if you do and give myself credit. You cannot sell this without permission from myself.