====== Main flight controls Aileron/Elevator/Rudder ======

  * Rack and pinion site: https://khkgears.net/new/gear_catalog.html
  * Useful rack and pinion physics: https://khkgears.net/pdf/3015/gear-rack.pdf
  * Sells gears: https://www.sdp-si.com/products/Gears/Spur-Gears-32-Pitch.php
  * http://www.servocity.com
  * [[https://www.servocity.com/785-gear-rack-kit-637170|Gear rack assembly]]
  * 100mm Rectilinear Potentiometer for sale: [[https://www.alibaba.com/product-detail/Rectilinear-motion-potentiometer-KTC-100mm_1462775970.html|Alibaba page]]

After examining the A-4 Trainer hydraulics, had a shift of opinion about how that should be implemented. If I'm able to measure the resistance from the strain gauge, I can use this to then trigger a linear rack & pinion, connected to a stepper motor.