This is a new Gear motor version of my previous Linear Servo actuator (http://www.thingiverse.com/thing:308576)
It is a custom 3D printed Linear Servo actuator for activating a lever or push/pulling something or other.
In this version I have designed the guide rails into the body of the actuator (for protection and a sturdier steadier motion).
The feedback gear also incorporates a lug which slots into the feedback potentiometer spindle.
If you would like to build it ot see it in action then head over to http://youtu.be/6VY1zWZcvO0 for assembly details
It uses a general purpose Geared Motor (often refereed to as a GM motor)
This version is faster and stronger than my original design.
Stroke :- 45mm
Speed :- Circa 1cm/sec using a 2 cell Lipo battery
Force :- Easily 3Kg (my kitchen scale max_ed out so could not measure over 3Kg)
More details can be found here :-