RC motor support 775

This is a remix off https://www.thingiverse.com/thing:2353464 for a bigger motor.
I design this for a 775 motor of banggood.
https://www.banggood.com/775-DC-12V-36V-3500-9000RPM-Large-Torque-High-Power-Low-Noise-Motor-p-1156904.html?rmmds=search&cur_warehouse=CN