Thanks for the replies and advice,
see any flaws in my scheme below?
condensed version,
3:1 reduction from motor to screws,
screws are 2.54 turn per inch
needed motor rpm for 300ipm 2286
mount 800 cpr[3200pulse] encoder on screw so
pulses per inch travel =8128
Mounting the encoder at screw end means less than 8 ft cable to
drive,
thanks again
Carl
