Vex EDR Reference Data

A compacted list of relevant facts about Vex parts:

Vex 393 at 7.2 volt , stall current: 4.8 amp , free current: 0.37 amp, gears : as_new , hi-spd , turbo , stall torque : 1.67 N.m , 1.04 N.m , 0.70 N.m , free speed : 100 rpm , 160 rpm , 240 rpm , mass: 0.192 lbs (87.1 grams) , advantage: our largest power & energy motor, disadvantage: maybe heavy to be on arm…​

Vex 269 at 7.2 volt , stall current: 2.6A , free current: 0.18A , free speed: 100 rpm , stall torque: 8.6 in-lbs , mass: (need to measure), advantage: lighter, smaller motor, disadvantage: lower torque, discontinued,

3-Wire Servo : Voltage: 4.4 - 9.1 volts, Current: 20mA - 1.5 amp , wires: black: Ground, orange: Power, white: PWM signal, PWM Input: 1ms - 2ms full range, 1.5ms center, rotation: 100 degrees, (does 90deg, but not 180) stall torque: 6.5 in-lbs, mass: (need to measure), advantage: built-in position-seeking, disadvantage: lowest torque, self-damaging if stalled,

Clutch : (job: to slip when over-torqued) working torque: torque for first-time slipping: advantage: may protect motors & servos from self-damage when bump-stopped, disadvantage: no specs, takes space, self-degrading, and discontinued by Vex!

Standard Gears: width at teeth: width at hub: tooth-pitch: (teeth per inch diameter, one number for whole gear-family) list of toothcounts: (go look), list of mid-tooth diameters: typical torque for rounding shaft core: (need to measure), breaking teeth: (need to measure), slipping teeth: (need to measure),

Hi-Strength Gears: