X axis wont run at a good speed even after changing Stepper
i have changed my stepper motor on the X axis to E3d supper whopper motor https://e3d-online.com/super-whopper-motor-1
but i can only get 1000 mms
M203 X1000 Y6000 Z480 E1200
if i go any higher it tends to jerk and miss
full settings below
M350 Y16 Z16 E16:16 I0 ; Configure microstepping without interpolation
M350 X16 I1 ; Configure microstepping with interpolation
M92 X1600 Y80 Z1600 E830 ; Set steps per mm
M566 X900 Y900 Z12 E120 ; Set maximum instantaneous speed changes (mm/min)
M203 X1000 Y6000 Z480 E1200 ; Set maximum speeds (mm/min)
M201 X100 Y250 Z100 E250 ; Set accelerations (mm/s^2)
M906 X2000 Y1000 Z1000 E1400 I30 ; Set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout
this is slowing my print time down as its on a leadscrew at a 2mm pitch and could do with going faster as it is able to print at a faster speed
my bed is a 400X400 and its taking forever to get from one side to another
I think the problem is the high steps/mm of your X axis coupled with the inductance of the motor. Use the spreadsheet at the end of https://duet3d.dozuki.com/Wiki/Choosing_and_connecting_stepper_motors#Section_How_to_work_out_the_power_supply_voltage_you_need to work out the speed at which the motor will start to lose torque.
don't know if i entered stuff in wrong but it says 17.6
would reducing the micro stepping work
The data looks plausible, except that the step angle for that motor is 1.8 not 0.8 degrees.
Reducing microstepping helps when the limiting factor is the step pulse frequency, but that is not the case here.
If you are using a leadscrew or threaded rod to drive the X axis, then changing to one with a coarser pitch will reduce the steps/mm and allow faster movement.
yea i have a 2mm pitch atm
ok so its now givinig me a score of 12.8
is that 12.8 or 128 or 1280 mms in speed
That's 12.8mm/sec. The figure in M203 is in mm/min. You have M203 X1000 which is 16.7mm/sec, above the speed at which you start to lose torque.