CNC router axis running slowly

[m_c]

Chain calculations are the same as rack and pinion.

Multiply the number of teeth on the sprocket, by the chain pitch, and it gives you distance per revolution of the sprocket.
Then dived the number of steps it takes to spin the sprocket one revolution, which for direct drive with a standard stepper motor is 200 times the microstep setting, by the distance.

So if you've got a 10t sprocket with a 1/2" pitch chain, it'll move 5" or 127mm per rev.
Paired to a standard stepper motor with 8 microstep setting, gives 1600 steps needed per rev.
So 1600/127 gives 12.594 steps per mm.

[Neale]

So if you've got a 10t sprocket with a 1/2" pitch chain, it'll move 3" or 76.2mm per rev.

Should that be 5"?

[m_c]

Should that be 5"?

Err..maybe

All fixed now.