This is probably not directly related to my TinyG setup, so this may not be the right venue for the question. I've made a pen plotter and I'd like to maximize the speed on the Y-Axis as much as possible. However, upgrading my power supply to a fancy 14A unit, switching my NEMA 17's for NEMA 23's, and adjusting the number of microsteps hasn't increased my max speed.
I'm using an OpenBuilds 8mm OD 8mm/rev. threaded rod for driving the Y-axis and the mechanism doesn't have much friction on it, with thrust bearings on both ends of the rod and not much weight on the axis itself.
I'm using a V8 TinyG board. Here are my baseline settings for the Y-axis https://imgur.com/l0uXbQa though I've been able to get the NEMA 17 moving at 7000mm/min at a jerk of a billion. I'm using build #380.08. I'm sending Gcode using TGFX v.95 for OSX.
I'm aiming at a feedrate of around 9000mm/min. Is there a possibility of tuning things and choosing the right motors to hit those numbers, or will it take a redesign of the drive mechanism to get up to that speed?