A whole lot of torque arms :-)
thingiverse
I simply archived all my OpenSCAD files related to torque arms for stronger hub-motors. The latest version shown in the picture was precision-cut from 6 mm V2A steel matching their PLA twin. Feel free to utilize them. While there appears to be a wide variety of different torque arms available on the market, I still believe there is a need for self-designed torque arms in certain situations. Be advised to always print them at the original strength you plan to use. Most OpenSCAD files will have some lines at the end like this: //full_torque_arm1 (); // Enable the line below if you want to generate STL files for 3D printing linear_extrude(height = 6, center = true, $fn=32) full_torque_arm1(); The upper line provides a 2D object required for export as DXF for cutting with water or laser. The linear_extrude part allows you to print the 2D part at any thickness you desire. Edit: I had to add an STL file solely because of Thingiverse input validation. Be sure to grab the full zip package. Adjusting the models to your needs is relatively straightforward. Simply move around the circles, and you'll see how the torque arm changes its shape. After some practice, you will find OpenSCAD pretty intuitive.
With this file you will be able to print A whole lot of torque arms :-) with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on A whole lot of torque arms :-).